[PATCH v5 00/79] refactor main RAM allocation to use hostmem backend

[PATCH v5 00/79] refactor main RAM allocation to use hostmem backend

[Igor Mammedov]

v5:
  - pick up new Reviewed-by-s
  - drop "ppc/prep: use memdev for RAM" since machine was removed
  - add patch "mips/mips_jazz: add max ram size check"
  - extend comment for "default_ram_id" to clarify that's setting it serves
    as optin flag for -m support. [03/79]
  - rebase "arm/raspi: use memdev for RAM" once more

v4:
  - pick up new Reviewed-by-s
  - Fix access to uninitialized pagesize/hpsize in
    "[PATCH REPOST v3 74/80] exec: cleanup  qemu_minrampagesize()/qemu_maxrampagesize()"
  - Make explicitly provided memory-backend work by using string property instead
    of link so it would be possible to delay access to the backend to the time
    when backends are initialized.
  - added new patches to make explicit backend work nice with -m and do sanity
    check on ram_size
      'vl.c: move -m parsing after memory backends has been processed'
      'vl.c: ensure that ram_size matches size of machine.memory-backend"
    all this ram_size business needs cleanup too, but that's out of the scope
    of this series.
  - include m68k/q800 board into conversion
  - drop patches that were merged through other trees

v3:
  - due to libvirt not being ready, postpone till 5.1
     * [PATCH v2 82/86] numa: forbid '-numa node,  mem' for 5.0 and newer machine types
     and depended
       [PATCH v2 86/86] numa: remove deprecated implicit RAM distribution  between nodes
  - drop as not related "[PATCH v2 85/86] numa: make exit() usage consistent"
  - drop "[PATCH v2 76/86] post conversion default_ram_id cleanup"
    so that default memory-backedend won't be created for boards that do not care
    about -m. Which makes -m optin feature. We should decide  what do in  case
    board doesn't use -m (but that's out of scope of this series)
  - use object_register_sugar_prop() instead of hacking compat props directly
  - simplified/reworked aspeed patches
  - s/RAM_ADDR_FMT/size_to_str()/
  - rename 'ram-memdev' property to 'memory-backend'
  - minor fixes to numa-test
  - fixes for issues noticed during review of
       [PATCH v2 66/86] ppc/{ppc440_bamboo,sam460x}: drop RAM size fixup

v2:
  - fix compile errors on mingw32 host by introducing RAM_ADDR_UFMT [11/86]
  - replace "[PATCH 43/86] hppa: drop RAM size fixup" with alternative
    patches made by Philippe (which effectively do the same thing but other
    way around)
  - ppc440: fix crash and add suggested valid RAM size in error output.
    s/ppc4xx_sdram_adjust/ppc4xx_sdram_prep/ and simplify it by removing
    not necessary nested loop
  - rebase on current master due to new conflicts


Series removes ad hoc RAM allocation API (memory_region_allocate_system_memory)
and consolidates it around hostmem backend. It allows to
 * resolve conflicts between global -mem-prealloc and hostmem's "policy" option
   fixing premature allocation before binding policy is applied
 * simplify complicated memory allocation routines which had to deal with 2 ways
   to allocate RAM.
 * it allows to reuse hostmem backends of a choice for main RAM without adding
   extra CLI options to duplicate hostmem features.
   Recent case was -mem-shared, to enable vhost-user on targets that don't
   support hostmem backends [1] (ex: s390)
 * move RAM allocation from individual boards into generic machine code and
   provide them with prepared MemoryRegion.
 * clean up deprecated NUMA features which were tied to the old API (see patches)
    - "numa: remove deprecated -mem-path fallback to anonymous RAM"
    - (POSTPONED, waiting on libvirt side) "forbid '-numa node,mem' for 5.0 and newer machine types"
    - (POSTPONED) "numa: remove deprecated implicit RAM distribution between nodes"

Conversion introduces a new machine.memory-backend property and wrapper code that
aliases global -mem-path and -mem-alloc into automatically created hostmem
backend properties (provided memory-backend was not set explicitly given by user).
And then follows bulk of trivial patches that incrementally convert individual
boards to using machine.memory-backend provided MemoryRegion.

Board conversion typically involves:
 * providing MachineClass::default_ram_size and MachineClass::default_ram_id
   so generic code could create default backend if user didn't explicitly provide
   memory-backend or -m options
 * dropping memory_region_allocate_system_memory() call
 * using convenience MachineState::ram MemoryRegion, which points to MemoryRegion
   allocated by ram-memdev
On top of that for some boards:
 * added missing ram_size checks (typically it were boards with fixed ram size)
 * ram_size fixups were replaced by checks and hard errors, forcing user to
   provide correct "-m" values instead of ignoring it and continuing running.

After all boards are converted the old API is removed and memory allocation
routines are cleaned up.

git tree for testing:
  https://github.com/imammedo/qemu convert_main_ram_to_memdev_v5

previous rev:
  https://github.com/imammedo/qemu convert_main_ram_to_memdev_v4

CC: Paolo Bonzini <pbonzini@redhat.com>

Igor Mammedov (79):
  numa: remove deprecated -mem-path fallback to anonymous RAM
  machine: introduce memory-backend property
  machine: alias -mem-path and -mem-prealloc into memory-foo backend
  machine: introduce convenience MachineState::ram
  initialize MachineState::ram in NUMA case
  vl.c: move -m parsing after memory backends has been processed
  vl.c: ensure that ram_size matches size of machine.memory-backend
  alpha/dp264: use memdev for RAM
  arm/aspeed: actually check RAM size
  arm/aspeed: use memdev for RAM
  arm/collie: use memdev for RAM
  arm/cubieboard: use memdev for RAM
  arm/digic_boards: use memdev for RAM
  arm/highbank: use memdev for RAM
  arm/imx25_pdk: drop RAM size fixup
  arm/imx25_pdk: use memdev for RAM
  arm/integratorcp: use memdev for RAM
  arm/kzm: drop RAM size fixup
  arm/kzm: use memdev for RAM
  arm/mcimx6ul-evk: use memdev for RAM
  arm/mcimx7d-sabre: use memdev for RAM
  arm/mps2-tz: use memdev for RAM
  arm/mps2: use memdev for RAM
  arm/musicpal: use memdev for RAM
  arm/nseries: use memdev for RAM
  arm/omap_sx1: use memdev for RAM
  arm/palm: use memdev for RAM
  arm/sabrelite: use memdev for RAM
  arm/raspi: use memdev for RAM
  arm/sbsa-ref: use memdev for RAM
  arm/versatilepb: use memdev for RAM
  arm/vexpress: use memdev for RAM
  arm/virt: use memdev for RAM
  arm/xilinx_zynq: drop RAM size fixup
  arm/xilinx_zynq: use memdev for RAM
  arm/xlnx-versal-virt: use memdev for RAM
  arm/xlnx-zcu102: use memdev for RAM
  s390x/s390-virtio-ccw: use memdev for RAM
  null-machine: use memdev for RAM
  cris/axis_dev88: use memdev for RAM
  hppa: use memdev for RAM
  x86/microvm: use memdev for RAM
  x86/pc: use memdev for RAM
  lm32/lm32_boards: use memdev for RAM
  lm32/milkymist: use memdev for RAM
  m68k/an5206: use memdev for RAM
  m68k/q800: use memdev for RAM
  m68k/mcf5208: use memdev for RAM
  m68k/next-cube: use memdev for RAM
  mips/boston: use memdev for RAM
  mips/mips_fulong2e: drop RAM size fixup
  mips/mips_fulong2e: use memdev for RAM
  mips/mips_jazz: use memdev for RAM
  mips/mips_jazz: add max ram size check
  mips/mips_malta: use memdev for RAM
  mips/mips_mipssim: use memdev for RAM
  mips/mips_r4k: use memdev for RAM
  ppc/e500: drop RAM size fixup
  ppc/e500: use memdev for RAM
  ppc/mac_newworld: use memdev for RAM
  ppc/mac_oldworld: use memdev for RAM
  ppc/pnv: use memdev for RAM
  ppc/ppc405_boards: add RAM size checks
  ppc/ppc405_boards: use memdev for RAM
  ppc/{ppc440_bamboo, sam460ex}: drop RAM size fixup
  ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM
  ppc/spapr: use memdev for RAM
  ppc/virtex_ml507: use memdev for RAM
  sparc/leon3: use memdev for RAM
  sparc/sun4m: use memdev for RAM
  sparc/niagara: use memdev for RAM
  remove no longer used memory_region_allocate_system_memory()
  exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize()
  exec: drop bogus mem_path from qemu_ram_alloc_from_fd()
  make mem_path local variable
  hostmem: introduce "prealloc-threads" property
  hostmem: fix strict bind policy
  tests/numa-test: make top level args dynamic and g_autofree(cli)
    cleanups
  tests:numa-test: use explicit memdev to specify node RAM

 hw/alpha/alpha_sys.h          |   2 +-
 include/hw/boards.h           |  54 ++++++-------
 include/hw/misc/aspeed_sdmc.h |   1 +
 include/hw/ppc/ppc4xx.h       |   9 +--
 include/sysemu/hostmem.h      |  20 ++++-
 include/sysemu/numa.h         |   1 +
 include/sysemu/sysemu.h       |   2 -
 backends/hostmem-file.c       |   8 --
 backends/hostmem-memfd.c      |   1 -
 backends/hostmem-ram.c        |   2 -
 backends/hostmem.c            |  53 +++++++++----
 exec.c                        |  64 ++--------------
 hw/alpha/dp264.c              |   3 +-
 hw/alpha/typhoon.c            |   8 +-
 hw/arm/aspeed.c               |  18 ++---
 hw/arm/collie.c               |  17 +++--
 hw/arm/cubieboard.c           |  25 ++----
 hw/arm/digic_boards.c         |  40 +++++-----
 hw/arm/highbank.c             |  10 +--
 hw/arm/imx25_pdk.c            |  13 ++--
 hw/arm/integratorcp.c         |   9 +--
 hw/arm/kzm.c                  |  18 ++---
 hw/arm/mcimx6ul-evk.c         |  25 +++---
 hw/arm/mcimx7d-sabre.c        |  25 +++---
 hw/arm/mps2-tz.c              |  15 +++-
 hw/arm/mps2.c                 |  15 +++-
 hw/arm/musicpal.c             |  18 +++--
 hw/arm/nseries.c              |  32 ++++----
 hw/arm/omap_sx1.c             |  20 +++--
 hw/arm/palm.c                 |  20 +++--
 hw/arm/raspi.c                |  10 +--
 hw/arm/sabrelite.c            |  23 ++----
 hw/arm/sbsa-ref.c             |   7 +-
 hw/arm/versatilepb.c          |   7 +-
 hw/arm/vexpress.c             |  14 ++--
 hw/arm/virt.c                 |   7 +-
 hw/arm/xilinx_zynq.c          |  20 +++--
 hw/arm/xlnx-versal-virt.c     |   7 +-
 hw/arm/xlnx-zcu102.c          |   7 +-
 hw/core/machine.c             |  48 ++++++++++++
 hw/core/null-machine.c        |   8 +-
 hw/core/numa.c                | 101 +++++++------------------
 hw/cris/axis_dev88.c          |   8 +-
 hw/hppa/machine.c             |  10 +--
 hw/i386/microvm.c             |  12 ++-
 hw/i386/pc.c                  |  19 +++--
 hw/lm32/lm32_boards.c         |  39 ++++++----
 hw/lm32/milkymist.c           |  21 ++++--
 hw/m68k/an5206.c              |   5 +-
 hw/m68k/mcf5208.c             |   5 +-
 hw/m68k/next-cube.c           |   5 +-
 hw/m68k/q800.c                |   6 +-
 hw/mips/boston.c              |  11 ++-
 hw/mips/mips_fulong2e.c       |  15 ++--
 hw/mips/mips_jazz.c           |  12 ++-
 hw/mips/mips_malta.c          |  10 +--
 hw/mips/mips_mipssim.c        |   9 +--
 hw/mips/mips_r4k.c            |  12 +--
 hw/misc/aspeed_sdmc.c         |  83 +++++++++++++++-----
 hw/ppc/e500.c                 |  17 ++---
 hw/ppc/e500plat.c             |   1 +
 hw/ppc/mac_newworld.c         |   6 +-
 hw/ppc/mac_oldworld.c         |   6 +-
 hw/ppc/mpc8544ds.c            |   1 +
 hw/ppc/pnv.c                  |   8 +-
 hw/ppc/ppc405_boards.c        |  48 +++++++-----
 hw/ppc/ppc440_bamboo.c        |  12 ++-
 hw/ppc/ppc4xx_devs.c          |  63 ++++++++--------
 hw/ppc/sam460ex.c             |   6 +-
 hw/ppc/spapr.c                |   8 +-
 hw/ppc/virtex_ml507.c         |  12 ++-
 hw/s390x/s390-virtio-ccw.c    |   7 +-
 hw/sparc/leon3.c              |   6 +-
 hw/sparc/sun4m.c              |  74 +++++++++---------
 hw/sparc64/niagara.c          |   7 +-
 qemu-deprecated.texi          |   9 ---
 tests/qtest/numa-test.c       | 138 ++++++++++++++++++----------------
 vl.c                          |  78 +++++++++++++++----
 78 files changed, 822 insertions(+), 774 deletions(-)

-- 
2.18.1

[PATCH v5 01/79] numa: remove deprecated -mem-path fallback to anonymous RAM

[Igor Mammedov]

it has been deprecated since 4.0 by commit
 cb79224b7 (deprecate -mem-path fallback to anonymous RAM)
Deprecation period ran out and it's time to remove it
so it won't get in a way of switching to using hostmem
backend for RAM.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC:libvir-list@redhat.com
CC: ehabkost@redhat.com
---
 hw/core/numa.c       | 18 +-----------------
 qemu-deprecated.texi |  9 ---------
 2 files changed, 1 insertion(+), 26 deletions(-)

diff --git a/hw/core/numa.c b/hw/core/numa.c
index 0d1b4be76a..840e68581f 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -784,24 +784,8 @@ static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner,
 {
     if (mem_path) {
 #ifdef __linux__
-        Error *err = NULL;
         memory_region_init_ram_from_file(mr, owner, name, ram_size, 0, 0,
-                                         mem_path, &err);
-        if (err) {
-            error_report_err(err);
-            if (mem_prealloc) {
-                exit(1);
-            }
-            warn_report("falling back to regular RAM allocation");
-            error_printf("This is deprecated. Make sure that -mem-path "
-                         " specified path has sufficient resources to allocate"
-                         " -m specified RAM amount\n");
-            /* Legacy behavior: if allocation failed, fall back to
-             * regular RAM allocation.
-             */
-            mem_path = NULL;
-            memory_region_init_ram_nomigrate(mr, owner, name, ram_size, &error_fatal);
-        }
+                                         mem_path, &error_fatal);
 #else
         fprintf(stderr, "-mem-path not supported on this host\n");
         exit(1);
diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 0671c26c80..66eca3a1de 100644
--- a/qemu-deprecated.texi
+++ b/qemu-deprecated.texi
@@ -113,15 +113,6 @@ QEMU using implicit generic or board specific splitting rule.
 Use @option{memdev} with @var{memory-backend-ram} backend or @option{mem} (if
 it's supported by used machine type) to define mapping explictly instead.
 
-@subsection -mem-path fallback to RAM (since 4.1)
-Currently if guest RAM allocation from file pointed by @option{mem-path}
-fails, QEMU falls back to allocating from RAM, which might result
-in unpredictable behavior since the backing file specified by the user
-is ignored. In the future, users will be responsible for making sure
-the backing storage specified with @option{-mem-path} can actually provide
-the guest RAM configured with @option{-m} and QEMU will fail to start up if
-RAM allocation is unsuccessful.
-
 @subsection RISC-V -bios (since 4.1)
 
 QEMU 4.1 introduced support for the -bios option in QEMU for RISC-V for the
-- 
2.18.1

[PATCH v5 02/79] machine: introduce memory-backend property

[Igor Mammedov]

Property will contain link to memory backend that will be
used for backing initial RAM.
Follow up commit will alias -mem-path and -mem-prealloc
CLI options into memory backend options to make memory
handling consistent (using only hostmem backend family
for guest RAM allocation).

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v4:
 * make property a string, instead of a link.
   Fixes -M memory-backend=foo: foo not found error
   since foo creation is delayed well beyond point
   where machine's properties are set
v3:
 * rename property name from ram-memdev to memory-backend
   (Paolo Bonzini <pbonzini@redhat.com>)

CC: ehabkost@redhat.com
CC: pbonzini@redhat.com
CC: pasic@linux.ibm.com
---
 include/hw/boards.h |  2 ++
 hw/core/machine.c   | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index fb1b43d5b9..7b4b6b79d7 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -4,6 +4,7 @@
 #define HW_BOARDS_H
 
 #include "exec/memory.h"
+#include "sysemu/hostmem.h"
 #include "sysemu/blockdev.h"
 #include "sysemu/accel.h"
 #include "qapi/qapi-types-machine.h"
@@ -285,6 +286,7 @@ struct MachineState {
     bool enforce_config_section;
     bool enable_graphics;
     char *memory_encryption;
+    char *ram_memdev_id;
     DeviceMemoryState *device_memory;
 
     ram_addr_t ram_size;
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 84812a1d1c..1a6e485c87 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -508,6 +508,22 @@ static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
     }
 }
 
+static char *machine_get_memdev(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->ram_memdev_id);
+}
+
+static void machine_set_memdev(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    g_free(ms->ram_memdev_id);
+    ms->ram_memdev_id = g_strdup(value);
+}
+
+
 static void machine_init_notify(Notifier *notifier, void *data)
 {
     MachineState *machine = MACHINE(qdev_get_machine());
@@ -889,6 +905,14 @@ static void machine_initfn(Object *obj)
                                         "Table (HMAT)", NULL);
     }
 
+    object_property_add_str(obj, "memory-backend",
+                            machine_get_memdev, machine_set_memdev,
+                            &error_abort);
+    object_property_set_description(obj, "memory-backend",
+                                    "Set RAM backend"
+                                    "Valid value is ID of hostmem based backend",
+                                     &error_abort);
+
     /* Register notifier when init is done for sysbus sanity checks */
     ms->sysbus_notifier.notify = machine_init_notify;
     qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
-- 
2.18.1

[PATCH v5 03/79] machine: alias -mem-path and -mem-prealloc into memory-foo backend

[Igor Mammedov]

Allow machine to opt in for hostmem backend based initial RAM
even if user uses old -mem-path/prealloc options by providing
  MachineClass::default_ram_id
Follow up patches will incrementally convert machines to new API,
by dropping memory_region_allocate_system_memory() and setting
default_ram_id that board used to use before conversion to keep
migration stream the same.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v3:
   * rename "ram-memdev" property to "memory-backend"
     (Paolo Bonzini <pbonzini@redhat.com>)
v4:
   * previous patch changed memory-backend property from link
     to string to allow for delayed backend creation, when
     backend comes explicitly from CLI.
     So s/object_property_set_link()/object_property_set_str()/
     to account for that.
v5:
   * add comment clarifaing that MachineClass::default_ram_id will
     serve as a way to enable "-m" support

CC: ehabkost@redhat.com
CC: pbonzini@redhat.com
CC: philmd@redhat.com
CC: pasic@linux.ibm.com
---
 include/hw/boards.h      |  8 ++++++++
 include/sysemu/hostmem.h | 16 ++++++++++++++++
 backends/hostmem-file.c  |  7 -------
 backends/hostmem-ram.c   |  2 --
 vl.c                     | 25 +++++++++++++++++++++++++
 5 files changed, 49 insertions(+), 9 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 7b4b6b79d7..8e536cafb2 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -170,6 +170,13 @@ typedef struct {
  *    false is returned, an error must be set to show the reason of
  *    the rejection.  If the hook is not provided, all hotplug will be
  *    allowed.
+ * @default_ram_id:
+ *    Specifies inital RAM MemoryRegion name to be used for default backend
+ *    creation if user explicitly hasn't specified backend with "memory-backend"
+ *    property.
+ *    It also will be used as a way to optin into "-m" option support.
+ *    If it's not set by board, '-m' will be ignored and generic code will
+ *    not create default RAM MemoryRegion.
  */
 struct MachineClass {
     /*< private >*/
@@ -226,6 +233,7 @@ struct MachineClass {
     bool nvdimm_supported;
     bool numa_mem_supported;
     bool auto_enable_numa;
+    const char *default_ram_id;
 
     HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
                                            DeviceState *dev);
diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h
index 4dbdadd39e..5db0d668ec 100644
--- a/include/sysemu/hostmem.h
+++ b/include/sysemu/hostmem.h
@@ -27,6 +27,22 @@
 #define MEMORY_BACKEND_CLASS(klass) \
     OBJECT_CLASS_CHECK(HostMemoryBackendClass, (klass), TYPE_MEMORY_BACKEND)
 
+/* hostmem-ram.c */
+/**
+ * @TYPE_MEMORY_BACKEND_RAM:
+ * name of backend that uses mmap on the anonymous RAM
+ */
+
+#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram"
+
+/* hostmem-file.c */
+/**
+ * @TYPE_MEMORY_BACKEND_FILE:
+ * name of backend that uses mmap on a file descriptor
+ */
+#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file"
+
+typedef struct HostMemoryBackend HostMemoryBackend;
 typedef struct HostMemoryBackendClass HostMemoryBackendClass;
 
 /**
diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index be64020746..cb319a9157 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -18,13 +18,6 @@
 #include "sysemu/sysemu.h"
 #include "qom/object_interfaces.h"
 
-/* hostmem-file.c */
-/**
- * @TYPE_MEMORY_BACKEND_FILE:
- * name of backend that uses mmap on a file descriptor
- */
-#define TYPE_MEMORY_BACKEND_FILE "memory-backend-file"
-
 #define MEMORY_BACKEND_FILE(obj) \
     OBJECT_CHECK(HostMemoryBackendFile, (obj), TYPE_MEMORY_BACKEND_FILE)
 
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index 6aab8d3a73..5cc53e76c9 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -16,8 +16,6 @@
 #include "qemu/module.h"
 #include "qom/object_interfaces.h"
 
-#define TYPE_MEMORY_BACKEND_RAM "memory-backend-ram"
-
 static void
 ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
 {
diff --git a/vl.c b/vl.c
index 794f2e5733..4dc4803611 100644
--- a/vl.c
+++ b/vl.c
@@ -75,6 +75,7 @@ int main(int argc, char **argv)
 #include "ui/input.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/numa.h"
+#include "sysemu/hostmem.h"
 #include "exec/gdbstub.h"
 #include "qemu/timer.h"
 #include "chardev/char.h"
@@ -2805,6 +2806,26 @@ static void configure_accelerators(const char *progname)
     }
 }
 
+static void create_default_memdev(MachineState *ms, const char *path,
+                                  bool prealloc)
+{
+    Object *obj;
+    MachineClass *mc = MACHINE_GET_CLASS(ms);
+
+    obj = object_new(path ? TYPE_MEMORY_BACKEND_FILE : TYPE_MEMORY_BACKEND_RAM);
+    if (path) {
+        object_property_set_str(obj, path, "mem-path", &error_fatal);
+    }
+    object_property_set_bool(obj, prealloc, "prealloc", &error_fatal);
+    object_property_set_int(obj, ms->ram_size, "size", &error_fatal);
+    object_property_add_child(object_get_objects_root(), mc->default_ram_id,
+                              obj, &error_fatal);
+    user_creatable_complete(USER_CREATABLE(obj), &error_fatal);
+    object_unref(obj);
+    object_property_set_str(OBJECT(ms), mc->default_ram_id, "memory-backend",
+                            &error_fatal);
+}
+
 int main(int argc, char **argv, char **envp)
 {
     int i;
@@ -4268,6 +4289,10 @@ int main(int argc, char **argv, char **envp)
     }
     parse_numa_opts(current_machine);
 
+    if (machine_class->default_ram_id && current_machine->ram_size &&
+        !current_machine->ram_memdev_id) {
+        create_default_memdev(current_machine, mem_path, mem_prealloc);
+    }
     /* do monitor/qmp handling at preconfig state if requested */
     main_loop();
 
-- 
2.18.1

[PATCH v5 04/79] machine: introduce convenience MachineState::ram

[Igor Mammedov]

the new field will be used by boards to get access to main
RAM memory region and will help to save boiler plate in
boards which often introduce a field or variable just for
this purpose.

Memory region will be equivalent to what currently used
memory_region_allocate_system_memory() is returning apart
from that it will come from hostmem backend.
Followup patches will incrementally switch boards to using
RAM from MachineState::ram.

Patch takes care of non-NUMA case and follow up patch will
initialize MachineState::ram for NUMA case.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: ehabkost@redhat.com
CC: pbonzini@redhat.com
CC: pasic@linux.ibm.com
---
 include/hw/boards.h | 12 +++++++++++-
 hw/core/machine.c   | 24 ++++++++++++++++++++++++
 hw/core/numa.c      | 14 +-------------
 3 files changed, 36 insertions(+), 14 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 8e536cafb2..ae2b60fb5e 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -73,7 +73,12 @@ void machine_set_cpu_numa_node(MachineState *machine,
                                Error **errp);
 
 void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
-
+/*
+ * Checks that backend isn't used, preps it for exclusive usage and
+ * returns migratable MemoryRegion provided by backend.
+ */
+MemoryRegion *machine_consume_memdev(MachineState *machine,
+                                     HostMemoryBackend *backend);
 
 /**
  * CPUArchId:
@@ -295,6 +300,11 @@ struct MachineState {
     bool enable_graphics;
     char *memory_encryption;
     char *ram_memdev_id;
+    /*
+     * convenience alias to ram_memdev_id backend memory region
+     * or to numa container memory region
+     */
+    MemoryRegion *ram;
     DeviceMemoryState *device_memory;
 
     ram_addr_t ram_size;
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 1a6e485c87..c8d361b710 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -26,6 +26,7 @@
 #include "sysemu/qtest.h"
 #include "hw/pci/pci.h"
 #include "hw/mem/nvdimm.h"
+#include "migration/vmstate.h"
 
 GlobalProperty hw_compat_4_2[] = {
     { "virtio-blk-device", "x-enable-wce-if-config-wce", "off" },
@@ -1059,10 +1060,33 @@ static void machine_numa_finish_cpu_init(MachineState *machine)
     g_string_free(s, true);
 }
 
+MemoryRegion *machine_consume_memdev(MachineState *machine,
+                                     HostMemoryBackend *backend)
+{
+    MemoryRegion *ret = host_memory_backend_get_memory(backend);
+
+    if (memory_region_is_mapped(ret)) {
+        char *path = object_get_canonical_path_component(OBJECT(backend));
+        error_report("memory backend %s can't be used multiple times.", path);
+        g_free(path);
+        exit(EXIT_FAILURE);
+    }
+    host_memory_backend_set_mapped(backend, true);
+    vmstate_register_ram_global(ret);
+    return ret;
+}
+
 void machine_run_board_init(MachineState *machine)
 {
     MachineClass *machine_class = MACHINE_GET_CLASS(machine);
 
+    if (machine->ram_memdev_id) {
+        Object *o;
+        o = object_resolve_path_type(machine->ram_memdev_id,
+                                     TYPE_MEMORY_BACKEND, NULL);
+        machine->ram = machine_consume_memdev(machine, MEMORY_BACKEND(o));
+    }
+
     if (machine->numa_state) {
         numa_complete_configuration(machine);
         if (machine->numa_state->num_nodes) {
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 840e68581f..8264336209 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -817,20 +817,8 @@ void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
         if (!backend) {
             continue;
         }
-        MemoryRegion *seg = host_memory_backend_get_memory(backend);
-
-        if (memory_region_is_mapped(seg)) {
-            char *path = object_get_canonical_path_component(OBJECT(backend));
-            error_report("memory backend %s is used multiple times. Each "
-                         "-numa option must use a different memdev value.",
-                         path);
-            g_free(path);
-            exit(1);
-        }
-
-        host_memory_backend_set_mapped(backend, true);
+        MemoryRegion *seg = machine_consume_memdev(ms, backend);
         memory_region_add_subregion(mr, addr, seg);
-        vmstate_register_ram_global(seg);
         addr += size;
     }
 }
-- 
2.18.1

[PATCH v5 05/79] initialize MachineState::ram in NUMA case

[Igor Mammedov]

In case of NUMA there are 2 cases to consider:
 1. '-numa node,memdev', the only one that will be available
    for 5.0 and newer machine types.

    In this case reuse current behavior, with only difference
    memdevs are put into MachineState::ram container +
    a temporary glue to keep memory_region_allocate_system_memory()
    working until all boards converted.

 2. fake NUMA ("-numa node mem" and default RAM splitting)
    the later has been deprecated and will be removed but the former
    is going to stay available for compat reasons for 5.0 and
    older machine types

    it takes allocate_system_memory_nonnuma() path, like non-NUMA
    case and falls under conversion to memdev.  So extend non-NUMA
    MachineState::ram initialization introduced in previous patch
    to take care of fake NUMA case.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: ehabkost@redhat.com
CC: pbonzini@redhat.com
CC: pasic@linux.ibm.com
---
 include/sysemu/numa.h |  1 +
 hw/core/numa.c        | 43 ++++++++++++++++++++++++++++++-------------
 vl.c                  |  2 +-
 3 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h
index ba693cc80b..ad58ee88f7 100644
--- a/include/sysemu/numa.h
+++ b/include/sysemu/numa.h
@@ -112,5 +112,6 @@ void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
                                   int nb_nodes, ram_addr_t size);
 void numa_cpu_pre_plug(const struct CPUArchId *slot, DeviceState *dev,
                        Error **errp);
+bool numa_uses_legacy_mem(void);
 
 #endif
diff --git a/hw/core/numa.c b/hw/core/numa.c
index 8264336209..e6baf2c33e 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -52,6 +52,11 @@ QemuOptsList qemu_numa_opts = {
 };
 
 static int have_memdevs;
+bool numa_uses_legacy_mem(void)
+{
+    return !have_memdevs;
+}
+
 static int have_mem;
 static int max_numa_nodeid; /* Highest specified NUMA node ID, plus one.
                              * For all nodes, nodeid < max_numa_nodeid
@@ -652,6 +657,23 @@ void numa_default_auto_assign_ram(MachineClass *mc, NodeInfo *nodes,
     nodes[i].node_mem = size - usedmem;
 }
 
+static void numa_init_memdev_container(MachineState *ms, MemoryRegion *ram)
+{
+    int i;
+    uint64_t addr = 0;
+
+    for (i = 0; i < ms->numa_state->num_nodes; i++) {
+        uint64_t size = ms->numa_state->nodes[i].node_mem;
+        HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
+        if (!backend) {
+            continue;
+        }
+        MemoryRegion *seg = machine_consume_memdev(ms, backend);
+        memory_region_add_subregion(ram, addr, seg);
+        addr += size;
+    }
+}
+
 void numa_complete_configuration(MachineState *ms)
 {
     int i;
@@ -734,6 +756,12 @@ void numa_complete_configuration(MachineState *ms)
             exit(1);
         }
 
+        if (!numa_uses_legacy_mem() && mc->default_ram_id) {
+            ms->ram = g_new(MemoryRegion, 1);
+            memory_region_init(ms->ram, OBJECT(ms), mc->default_ram_id,
+                               ram_size);
+            numa_init_memdev_container(ms, ms->ram);
+        }
         /* QEMU needs at least all unique node pair distances to build
          * the whole NUMA distance table. QEMU treats the distance table
          * as symmetric by default, i.e. distance A->B == distance B->A.
@@ -800,27 +828,16 @@ void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
                                           const char *name,
                                           uint64_t ram_size)
 {
-    uint64_t addr = 0;
-    int i;
     MachineState *ms = MACHINE(qdev_get_machine());
 
     if (ms->numa_state == NULL ||
-        ms->numa_state->num_nodes == 0 || !have_memdevs) {
+        ms->numa_state->num_nodes == 0 || numa_uses_legacy_mem()) {
         allocate_system_memory_nonnuma(mr, owner, name, ram_size);
         return;
     }
 
     memory_region_init(mr, owner, name, ram_size);
-    for (i = 0; i < ms->numa_state->num_nodes; i++) {
-        uint64_t size = ms->numa_state->nodes[i].node_mem;
-        HostMemoryBackend *backend = ms->numa_state->nodes[i].node_memdev;
-        if (!backend) {
-            continue;
-        }
-        MemoryRegion *seg = machine_consume_memdev(ms, backend);
-        memory_region_add_subregion(mr, addr, seg);
-        addr += size;
-    }
+    numa_init_memdev_container(ms, mr);
 }
 
 static void numa_stat_memory_devices(NumaNodeMem node_mem[])
diff --git a/vl.c b/vl.c
index 4dc4803611..2103804c52 100644
--- a/vl.c
+++ b/vl.c
@@ -4290,7 +4290,7 @@ int main(int argc, char **argv, char **envp)
     parse_numa_opts(current_machine);
 
     if (machine_class->default_ram_id && current_machine->ram_size &&
-        !current_machine->ram_memdev_id) {
+        numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
         create_default_memdev(current_machine, mem_path, mem_prealloc);
     }
     /* do monitor/qmp handling at preconfig state if requested */
-- 
2.18.1

[PATCH v5 06/79] vl.c: move -m parsing after memory backends has been processed

[Igor Mammedov]

It will be possible for main RAM to come from memory-backend
and we should check that size specified in -m matches the size
of the backend and [MachineState::]ram_size also matches
backend's size.

However -m parsing (set_memory_options()) happens before backends
are intialized (object_create_delayed()) which complicates it.
Consolidate set_memory_options() and assigning parsed results to
current_machine after backends are initialized, so it would be
possible access the initialized backend instance to compare
sizes.

This patch only consolidates scattered places touching ram_size
within vl.c. And follow up patch will integrate backend handling
to set_memory_options().

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: pasic@linux.ibm.com
CC: pbonzini@redhat.com
---
 vl.c | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/vl.c b/vl.c
index 2103804c52..72ffc06f2f 100644
--- a/vl.c
+++ b/vl.c
@@ -2655,6 +2655,14 @@ static void set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
         exit(EXIT_FAILURE);
     }
 
+    if (!xen_enabled()) {
+        /* On 32-bit hosts, QEMU is limited by virtual address space */
+        if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
+            error_report("at most 2047 MB RAM can be simulated");
+            exit(1);
+        }
+    }
+
     loc_pop(&loc);
 }
 
@@ -3819,8 +3827,6 @@ int main(int argc, char **argv, char **envp)
     machine_class = select_machine();
     object_set_machine_compat_props(machine_class->compat_props);
 
-    set_memory_options(&ram_slots, &maxram_size, machine_class);
-
     os_daemonize();
     rcu_disable_atfork();
 
@@ -4122,9 +4128,6 @@ int main(int argc, char **argv, char **envp)
     machine_opts = qemu_get_machine_opts();
     qemu_opt_foreach(machine_opts, machine_set_property, current_machine,
                      &error_fatal);
-    current_machine->ram_size = ram_size;
-    current_machine->maxram_size = maxram_size;
-    current_machine->ram_slots = ram_slots;
 
     /*
      * Note: uses machine properties such as kernel-irqchip, must run
@@ -4235,14 +4238,6 @@ int main(int argc, char **argv, char **envp)
 
     tpm_init();
 
-    if (!xen_enabled()) {
-        /* On 32-bit hosts, QEMU is limited by virtual address space */
-        if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
-            error_report("at most 2047 MB RAM can be simulated");
-            exit(1);
-        }
-    }
-
     blk_mig_init();
     ram_mig_init();
     dirty_bitmap_mig_init();
@@ -4287,6 +4282,12 @@ int main(int argc, char **argv, char **envp)
     if (cpu_option) {
         current_machine->cpu_type = parse_cpu_option(cpu_option);
     }
+
+    set_memory_options(&ram_slots, &maxram_size, machine_class);
+    current_machine->ram_size = ram_size;
+    current_machine->maxram_size = maxram_size;
+    current_machine->ram_slots = ram_slots;
+
     parse_numa_opts(current_machine);
 
     if (machine_class->default_ram_id && current_machine->ram_size &&
-- 
2.18.1

[PATCH v5 07/79] vl.c: ensure that ram_size matches size of machine.memory-backend

[Igor Mammedov]

Extend set_memory_options() to check that size specified by -m
matches the size of backend pointed by memory-backend.
And in case of -m was omitted adjust ram_size to match that
of explicitly provided backend.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: pasic@linux.ibm.com
CC: pbonzini@redhat.com
---
 vl.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/vl.c b/vl.c
index 72ffc06f2f..a7edcba094 100644
--- a/vl.c
+++ b/vl.c
@@ -2655,6 +2655,21 @@ static void set_memory_options(uint64_t *ram_slots, ram_addr_t *maxram_size,
         exit(EXIT_FAILURE);
     }
 
+    if (current_machine->ram_memdev_id) {
+        Object *backend;
+        ram_addr_t backend_size;
+
+        backend = object_resolve_path_type(current_machine->ram_memdev_id,
+                                           TYPE_MEMORY_BACKEND, NULL);
+        backend_size = object_property_get_uint(backend, "size",  &error_abort);
+        if (mem_str && backend_size != ram_size) {
+                error_report("Size specified by -m option must match size of "
+                             "explicitly specified 'memory-backend' property");
+                exit(EXIT_FAILURE);
+        }
+        ram_size = backend_size;
+    }
+
     if (!xen_enabled()) {
         /* On 32-bit hosts, QEMU is limited by virtual address space */
         if (ram_size > (2047 << 20) && HOST_LONG_BITS == 32) {
-- 
2.18.1

[PATCH v5 08/79] alpha/dp264: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
---
 hw/alpha/alpha_sys.h | 2 +-
 hw/alpha/dp264.c     | 3 ++-
 hw/alpha/typhoon.c   | 8 ++------
 3 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/hw/alpha/alpha_sys.h b/hw/alpha/alpha_sys.h
index 95033d7f0b..bc0a286226 100644
--- a/hw/alpha/alpha_sys.h
+++ b/hw/alpha/alpha_sys.h
@@ -11,7 +11,7 @@
 #include "hw/intc/i8259.h"
 
 
-PCIBus *typhoon_init(ram_addr_t, ISABus **, qemu_irq *, AlphaCPU *[4],
+PCIBus *typhoon_init(MemoryRegion *, ISABus **, qemu_irq *, AlphaCPU *[4],
                      pci_map_irq_fn);
 
 /* alpha_pci.c.  */
diff --git a/hw/alpha/dp264.c b/hw/alpha/dp264.c
index a8f9a89cc4..8d71a30617 100644
--- a/hw/alpha/dp264.c
+++ b/hw/alpha/dp264.c
@@ -75,7 +75,7 @@ static void clipper_init(MachineState *machine)
     cpus[0]->env.trap_arg2 = smp_cpus;
 
     /* Init the chipset.  */
-    pci_bus = typhoon_init(ram_size, &isa_bus, &rtc_irq, cpus,
+    pci_bus = typhoon_init(machine->ram, &isa_bus, &rtc_irq, cpus,
                            clipper_pci_map_irq);
 
     /* Since we have an SRM-compatible PALcode, use the SRM epoch.  */
@@ -183,6 +183,7 @@ static void clipper_machine_init(MachineClass *mc)
     mc->max_cpus = 4;
     mc->is_default = 1;
     mc->default_cpu_type = ALPHA_CPU_TYPE_NAME("ev67");
+    mc->default_ram_id = "ram";
 }
 
 DEFINE_MACHINE("clipper", clipper_machine_init)
diff --git a/hw/alpha/typhoon.c b/hw/alpha/typhoon.c
index 179e1f7658..1795e2f29d 100644
--- a/hw/alpha/typhoon.c
+++ b/hw/alpha/typhoon.c
@@ -58,7 +58,6 @@ typedef struct TyphoonState {
     TyphoonCchip cchip;
     TyphoonPchip pchip;
     MemoryRegion dchip_region;
-    MemoryRegion ram_region;
 } TyphoonState;
 
 /* Called when one of DRIR or DIM changes.  */
@@ -817,8 +816,7 @@ static void typhoon_alarm_timer(void *opaque)
     cpu_interrupt(CPU(s->cchip.cpu[cpu]), CPU_INTERRUPT_TIMER);
 }
 
-PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
-                     qemu_irq *p_rtc_irq,
+PCIBus *typhoon_init(MemoryRegion *ram, ISABus **isa_bus, qemu_irq *p_rtc_irq,
                      AlphaCPU *cpus[4], pci_map_irq_fn sys_map_irq)
 {
     MemoryRegion *addr_space = get_system_memory();
@@ -851,9 +849,7 @@ PCIBus *typhoon_init(ram_addr_t ram_size, ISABus **isa_bus,
 
     /* Main memory region, 0x00.0000.0000.  Real hardware supports 32GB,
        but the address space hole reserved at this point is 8TB.  */
-    memory_region_allocate_system_memory(&s->ram_region, OBJECT(s), "ram",
-                                         ram_size);
-    memory_region_add_subregion(addr_space, 0, &s->ram_region);
+    memory_region_add_subregion(addr_space, 0, ram);
 
     /* TIGbus, 0x801.0000.0000, 1GB.  */
     /* ??? The TIGbus is used for delivering interrupts, and access to
-- 
2.18.1

[PATCH v5 09/79] arm/aspeed: actually check RAM size

[Igor Mammedov]

It's supposed that SOC will check if "-m" provided
RAM size is valid by setting "ram-size" property and
then board would read back valid (possibly corrected
value) to map RAM MemoryReging with valid size.
It isn't doing so, since check is called only
indirectly from
  aspeed_sdmc_reset()->asc->compute_conf()
or much later when guest writes to configuration
register.

So depending on "-m" value QEMU end-ups with a warning
and an invalid MemoryRegion size allocated and mapped.
(examples:
 -M ast2500-evb -m 1M
    0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container
      0000000080000000-00000000800fffff (prio 0, ram): ram
      0000000080100000-00000000bfffffff (prio 0, i/o): max_ram
 -M ast2500-evb -m 3G
    0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container
      0000000080000000-000000013fffffff (prio 0, ram): ram
      [DETECTED OVERFLOW!] 0000000140000000-00000000bfffffff (prio 0, i/o): max_ram
)
On top of that sdmc falls back and reports to guest
"default" size, it thinks machine should have.

This patch makes ram-size check actually work and
changes behavior from a warning later on during
machine reset to error_fatal at the moment SOC.ram-size
is set so user will have to fix RAM size on CLI
to start machine.

It also gets out of the way mutable ram-size logic,
so we could consolidate RAM allocation logic around
pre-allocated hostmem backend (supplied by user or
auto created by generic machine code depending on
supplied -m/mem-path/mem-prealloc options.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
---
v3:
  * replace
     [PATCH v2 07/86] arm:aspeed: convert valid RAM sizes to data
     [PATCH v2 08/86] arm:aspeed: actually check RAM size
    with a simplified variant that adds ram_size check to sdmc.ram-size
    property
  * use g_assert_not_reached() in default branch
    (Cédric Le Goater <clg@kaod.org>)
---
 include/hw/misc/aspeed_sdmc.h |  1 +
 hw/arm/aspeed.c               | 13 +++---
 hw/misc/aspeed_sdmc.c         | 83 +++++++++++++++++++++++++++--------
 3 files changed, 70 insertions(+), 27 deletions(-)

diff --git a/include/hw/misc/aspeed_sdmc.h b/include/hw/misc/aspeed_sdmc.h
index 5dbde59fe7..cea1e67fe3 100644
--- a/include/hw/misc/aspeed_sdmc.h
+++ b/include/hw/misc/aspeed_sdmc.h
@@ -40,6 +40,7 @@ typedef struct AspeedSDMCClass {
     SysBusDeviceClass parent_class;
 
     uint64_t max_ram_size;
+    const uint64_t *valid_ram_sizes;
     uint32_t (*compute_conf)(AspeedSDMCState *s, uint32_t data);
     void (*write)(AspeedSDMCState *s, uint32_t reg, uint32_t data);
 } AspeedSDMCClass;
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index a17843f0d3..805bebd0d0 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -204,8 +204,12 @@ static void aspeed_machine_init(MachineState *machine)
 
     sc = ASPEED_SOC_GET_CLASS(&bmc->soc);
 
+    /*
+     * This will error out if isize is not supported by memory controller.
+     */
     object_property_set_uint(OBJECT(&bmc->soc), ram_size, "ram-size",
-                             &error_abort);
+                             &error_fatal);
+
     object_property_set_int(OBJECT(&bmc->soc), amc->hw_strap1, "hw-strap1",
                             &error_abort);
     object_property_set_int(OBJECT(&bmc->soc), amc->hw_strap2, "hw-strap2",
@@ -228,13 +232,6 @@ static void aspeed_machine_init(MachineState *machine)
     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
                              &error_abort);
 
-    /*
-     * Allocate RAM after the memory controller has checked the size
-     * was valid. If not, a default value is used.
-     */
-    ram_size = object_property_get_uint(OBJECT(&bmc->soc), "ram-size",
-                                        &error_abort);
-
     memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
     memory_region_add_subregion(&bmc->ram_container, 0, &bmc->ram);
     memory_region_add_subregion(get_system_memory(),
diff --git a/hw/misc/aspeed_sdmc.c b/hw/misc/aspeed_sdmc.c
index 9c184790cd..7b466bf19a 100644
--- a/hw/misc/aspeed_sdmc.c
+++ b/hw/misc/aspeed_sdmc.c
@@ -17,6 +17,9 @@
 #include "migration/vmstate.h"
 #include "qapi/error.h"
 #include "trace.h"
+#include "qemu/units.h"
+#include "qemu/cutils.h"
+#include "qapi/visitor.h"
 
 /* Protection Key Register */
 #define R_PROT            (0x00 / 4)
@@ -160,14 +163,9 @@ static int ast2400_rambits(AspeedSDMCState *s)
     case 512:
         return ASPEED_SDMC_DRAM_512MB;
     default:
+        g_assert_not_reached();
         break;
     }
-
-    /* use a common default */
-    warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 256M",
-                s->ram_size);
-    s->ram_size = 256 << 20;
-    return ASPEED_SDMC_DRAM_256MB;
 }
 
 static int ast2500_rambits(AspeedSDMCState *s)
@@ -182,14 +180,9 @@ static int ast2500_rambits(AspeedSDMCState *s)
     case 1024:
         return ASPEED_SDMC_AST2500_1024MB;
     default:
+        g_assert_not_reached();
         break;
     }
-
-    /* use a common default */
-    warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 512M",
-                s->ram_size);
-    s->ram_size = 512 << 20;
-    return ASPEED_SDMC_AST2500_512MB;
 }
 
 static int ast2600_rambits(AspeedSDMCState *s)
@@ -204,14 +197,9 @@ static int ast2600_rambits(AspeedSDMCState *s)
     case 2048:
         return ASPEED_SDMC_AST2600_2048MB;
     default:
+        g_assert_not_reached();
         break;
     }
-
-    /* use a common default */
-    warn_report("Invalid RAM size 0x%" PRIx64 ". Using default 1024M",
-                s->ram_size);
-    s->ram_size = 1024 << 20;
-    return ASPEED_SDMC_AST2600_1024MB;
 }
 
 static void aspeed_sdmc_reset(DeviceState *dev)
@@ -225,6 +213,51 @@ static void aspeed_sdmc_reset(DeviceState *dev)
     s->regs[R_CONF] = asc->compute_conf(s, 0);
 }
 
+static void aspeed_sdmc_get_ram_size(Object *obj, Visitor *v, const char *name,
+                                     void *opaque, Error **errp)
+{
+    AspeedSDMCState *s = ASPEED_SDMC(obj);
+    int64_t value = s->ram_size;
+
+    visit_type_int(v, name, &value, errp);
+}
+
+static void aspeed_sdmc_set_ram_size(Object *obj, Visitor *v, const char *name,
+                                     void *opaque, Error **errp)
+{
+    int i;
+    char *sz;
+    int64_t value;
+    Error *local_err = NULL;
+    AspeedSDMCState *s = ASPEED_SDMC(obj);
+    AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
+
+    visit_type_int(v, name, &value, &local_err);
+    if (local_err) {
+        error_propagate(errp, local_err);
+        return;
+    }
+
+    for (i = 0; asc->valid_ram_sizes[i]; i++) {
+        if (value == asc->valid_ram_sizes[i]) {
+            s->ram_size = value;
+            return;
+        }
+    }
+
+    sz = size_to_str(value);
+    error_setg(&local_err, "Invalid RAM size %s", sz);
+    g_free(sz);
+    error_propagate(errp, local_err);
+}
+
+static void aspeed_sdmc_initfn(Object *obj)
+{
+    object_property_add(obj, "ram-size", "int",
+                        aspeed_sdmc_get_ram_size, aspeed_sdmc_set_ram_size,
+                        NULL, NULL, NULL);
+}
+
 static void aspeed_sdmc_realize(DeviceState *dev, Error **errp)
 {
     SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
@@ -249,7 +282,6 @@ static const VMStateDescription vmstate_aspeed_sdmc = {
 };
 
 static Property aspeed_sdmc_properties[] = {
-    DEFINE_PROP_UINT64("ram-size", AspeedSDMCState, ram_size, 0),
     DEFINE_PROP_UINT64("max-ram-size", AspeedSDMCState, max_ram_size, 0),
     DEFINE_PROP_END_OF_LIST(),
 };
@@ -268,6 +300,7 @@ static const TypeInfo aspeed_sdmc_info = {
     .name = TYPE_ASPEED_SDMC,
     .parent = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(AspeedSDMCState),
+    .instance_init = aspeed_sdmc_initfn,
     .class_init = aspeed_sdmc_class_init,
     .class_size = sizeof(AspeedSDMCClass),
     .abstract   = true,
@@ -298,6 +331,9 @@ static void aspeed_2400_sdmc_write(AspeedSDMCState *s, uint32_t reg,
     s->regs[reg] = data;
 }
 
+static const uint64_t
+aspeed_2400_ram_sizes[] = { 64 * MiB, 128 * MiB, 256 * MiB, 512 * MiB, 0};
+
 static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -307,6 +343,7 @@ static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data)
     asc->max_ram_size = 512 << 20;
     asc->compute_conf = aspeed_2400_sdmc_compute_conf;
     asc->write = aspeed_2400_sdmc_write;
+    asc->valid_ram_sizes = aspeed_2400_ram_sizes;
 }
 
 static const TypeInfo aspeed_2400_sdmc_info = {
@@ -351,6 +388,9 @@ static void aspeed_2500_sdmc_write(AspeedSDMCState *s, uint32_t reg,
     s->regs[reg] = data;
 }
 
+static const uint64_t
+aspeed_2500_ram_sizes[] = { 128 * MiB, 256 * MiB, 512 * MiB, 1024 * MiB, 0};
+
 static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -360,6 +400,7 @@ static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data)
     asc->max_ram_size = 1024 << 20;
     asc->compute_conf = aspeed_2500_sdmc_compute_conf;
     asc->write = aspeed_2500_sdmc_write;
+    asc->valid_ram_sizes = aspeed_2500_ram_sizes;
 }
 
 static const TypeInfo aspeed_2500_sdmc_info = {
@@ -404,6 +445,9 @@ static void aspeed_2600_sdmc_write(AspeedSDMCState *s, uint32_t reg,
     s->regs[reg] = data;
 }
 
+static const uint64_t
+aspeed_2600_ram_sizes[] = { 256 * MiB, 512 * MiB, 1024 * MiB, 2048 * MiB, 0};
+
 static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
@@ -413,6 +457,7 @@ static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data)
     asc->max_ram_size = 2048 << 20;
     asc->compute_conf = aspeed_2600_sdmc_compute_conf;
     asc->write = aspeed_2600_sdmc_write;
+    asc->valid_ram_sizes = aspeed_2600_ram_sizes;
 }
 
 static const TypeInfo aspeed_2600_sdmc_info = {
-- 
2.18.1

[PATCH v5 10/79] arm/aspeed: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Joel Stanley <joel@jms.id.au>
---
 hw/arm/aspeed.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 805bebd0d0..a6a2102a93 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -35,7 +35,6 @@ static struct arm_boot_info aspeed_board_binfo = {
 struct AspeedBoardState {
     AspeedSoCState soc;
     MemoryRegion ram_container;
-    MemoryRegion ram;
     MemoryRegion max_ram;
 };
 
@@ -197,6 +196,7 @@ static void aspeed_machine_init(MachineState *machine)
 
     memory_region_init(&bmc->ram_container, NULL, "aspeed-ram-container",
                        UINT32_MAX);
+    memory_region_add_subregion(&bmc->ram_container, 0, machine->ram);
 
     object_initialize_child(OBJECT(machine), "soc", &bmc->soc,
                             (sizeof(bmc->soc)), amc->soc_name, &error_abort,
@@ -232,8 +232,6 @@ static void aspeed_machine_init(MachineState *machine)
     object_property_set_bool(OBJECT(&bmc->soc), true, "realized",
                              &error_abort);
 
-    memory_region_allocate_system_memory(&bmc->ram, NULL, "ram", ram_size);
-    memory_region_add_subregion(&bmc->ram_container, 0, &bmc->ram);
     memory_region_add_subregion(get_system_memory(),
                                 sc->memmap[ASPEED_SDRAM],
                                 &bmc->ram_container);
@@ -436,6 +434,7 @@ static void aspeed_machine_class_init(ObjectClass *oc, void *data)
     mc->no_floppy = 1;
     mc->no_cdrom = 1;
     mc->no_parallel = 1;
+    mc->default_ram_id = "ram";
 
     aspeed_machine_class_props_init(oc);
 }
-- 
2.18.1

[PATCH v5 11/79] arm/collie: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 - while at it add check for user supplied RAM size and error
   out if it mismatches board expected value.
 - introduce RAM_ADDR_UFMT to avoid build errors on 32-bit hosts
   when specifying format string for ram_addr_t type

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
v3:
  * instead of RAM_ADDR_UFMT adding use size_to_str()
     Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/collie.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/hw/arm/collie.c b/hw/arm/collie.c
index 970a4405cc..024893fc9e 100644
--- a/hw/arm/collie.c
+++ b/hw/arm/collie.c
@@ -10,6 +10,7 @@
  */
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "qemu/cutils.h"
 #include "hw/sysbus.h"
 #include "hw/boards.h"
 #include "strongarm.h"
@@ -20,20 +21,24 @@
 
 static struct arm_boot_info collie_binfo = {
     .loader_start = SA_SDCS0,
-    .ram_size = 0x20000000,
 };
 
 static void collie_init(MachineState *machine)
 {
     StrongARMState *s;
     DriveInfo *dinfo;
-    MemoryRegion *sdram = g_new(MemoryRegion, 1);
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
+
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
 
     s = sa1110_init(machine->cpu_type);
 
-    memory_region_allocate_system_memory(sdram, NULL, "strongarm.sdram",
-                                         collie_binfo.ram_size);
-    memory_region_add_subregion(get_system_memory(), SA_SDCS0, sdram);
+    memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     pflash_cfi01_register(SA_CS0, "collie.fl1", 0x02000000,
@@ -57,6 +62,8 @@ static void collie_machine_init(MachineClass *mc)
     mc->init = collie_init;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("sa1110");
+    mc->default_ram_size = 0x20000000;
+    mc->default_ram_id = "strongarm.sdram";
 }
 
 DEFINE_MACHINE("collie", collie_machine_init)
-- 
2.18.1

[PATCH v5 12/79] arm/cubieboard: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
While at it, get rid of no longer needed CubieBoardState wrapper.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
CC: b.galvani@gmail.com
---
 hw/arm/cubieboard.c | 25 ++++++++-----------------
 1 file changed, 8 insertions(+), 17 deletions(-)

diff --git a/hw/arm/cubieboard.c b/hw/arm/cubieboard.c
index 6dc2f1d6b6..089f9a30c1 100644
--- a/hw/arm/cubieboard.c
+++ b/hw/arm/cubieboard.c
@@ -28,52 +28,42 @@ static struct arm_boot_info cubieboard_binfo = {
     .board_id = 0x1008,
 };
 
-typedef struct CubieBoardState {
-    AwA10State *a10;
-    MemoryRegion sdram;
-} CubieBoardState;
-
 static void cubieboard_init(MachineState *machine)
 {
-    CubieBoardState *s = g_new(CubieBoardState, 1);
+    AwA10State *a10 = AW_A10(object_new(TYPE_AW_A10));
     Error *err = NULL;
 
-    s->a10 = AW_A10(object_new(TYPE_AW_A10));
-
-    object_property_set_int(OBJECT(&s->a10->emac), 1, "phy-addr", &err);
+    object_property_set_int(OBJECT(&a10->emac), 1, "phy-addr", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't set phy address: ");
         exit(1);
     }
 
-    object_property_set_int(OBJECT(&s->a10->timer), 32768, "clk0-freq", &err);
+    object_property_set_int(OBJECT(&a10->timer), 32768, "clk0-freq", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't set clk0 frequency: ");
         exit(1);
     }
 
-    object_property_set_int(OBJECT(&s->a10->timer), 24000000, "clk1-freq",
-                            &err);
+    object_property_set_int(OBJECT(&a10->timer), 24000000, "clk1-freq", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't set clk1 frequency: ");
         exit(1);
     }
 
-    object_property_set_bool(OBJECT(s->a10), true, "realized", &err);
+    object_property_set_bool(OBJECT(a10), true, "realized", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't realize Allwinner A10: ");
         exit(1);
     }
 
-    memory_region_allocate_system_memory(&s->sdram, NULL, "cubieboard.ram",
-                                         machine->ram_size);
     memory_region_add_subregion(get_system_memory(), AW_A10_SDRAM_BASE,
-                                &s->sdram);
+                                machine->ram);
 
     /* TODO create and connect IDE devices for ide_drive_get() */
 
     cubieboard_binfo.ram_size = machine->ram_size;
-    arm_load_kernel(&s->a10->cpu, machine, &cubieboard_binfo);
+    arm_load_kernel(&a10->cpu, machine, &cubieboard_binfo);
 }
 
 static void cubieboard_machine_init(MachineClass *mc)
@@ -84,6 +74,7 @@ static void cubieboard_machine_init(MachineClass *mc)
     mc->block_default_type = IF_IDE;
     mc->units_per_default_bus = 1;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "cubieboard.ram";
 }
 
 DEFINE_MACHINE("cubieboard", cubieboard_machine_init)
-- 
2.18.1

[PATCH v5 13/79] arm/digic_boards: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 remove no longer needed DigicBoardState

PS2:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v3:
  * move 'DigicState *s' declaration to the top of digic4_board_init()
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: antonynpavlov@gmail.com
---
 hw/arm/digic_boards.c | 40 +++++++++++++++++++++-------------------
 1 file changed, 21 insertions(+), 19 deletions(-)

diff --git a/hw/arm/digic_boards.c b/hw/arm/digic_boards.c
index ef3fc2b6a5..518a63e61d 100644
--- a/hw/arm/digic_boards.c
+++ b/hw/arm/digic_boards.c
@@ -35,39 +35,40 @@
 #include "hw/loader.h"
 #include "sysemu/sysemu.h"
 #include "sysemu/qtest.h"
+#include "qemu/units.h"
+#include "qemu/cutils.h"
 
 #define DIGIC4_ROM0_BASE      0xf0000000
 #define DIGIC4_ROM1_BASE      0xf8000000
 #define DIGIC4_ROM_MAX_SIZE   0x08000000
 
-typedef struct DigicBoardState {
-    DigicState *digic;
-    MemoryRegion ram;
-} DigicBoardState;
-
 typedef struct DigicBoard {
-    hwaddr ram_size;
-    void (*add_rom0)(DigicBoardState *, hwaddr, const char *);
+    void (*add_rom0)(DigicState *, hwaddr, const char *);
     const char *rom0_def_filename;
-    void (*add_rom1)(DigicBoardState *, hwaddr, const char *);
+    void (*add_rom1)(DigicState *, hwaddr, const char *);
     const char *rom1_def_filename;
 } DigicBoard;
 
-static void digic4_board_init(DigicBoard *board)
+static void digic4_board_init(MachineState *machine, DigicBoard *board)
 {
     Error *err = NULL;
+    DigicState *s = DIGIC(object_new(TYPE_DIGIC));
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
+
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
 
-    DigicBoardState *s = g_new(DigicBoardState, 1);
-
-    s->digic = DIGIC(object_new(TYPE_DIGIC));
-    object_property_set_bool(OBJECT(s->digic), true, "realized", &err);
+    object_property_set_bool(OBJECT(s), true, "realized", &err);
     if (err != NULL) {
         error_reportf_err(err, "Couldn't realize DIGIC SoC: ");
         exit(1);
     }
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "ram", board->ram_size);
-    memory_region_add_subregion(get_system_memory(), 0, &s->ram);
+    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     if (board->add_rom0) {
         board->add_rom0(s, DIGIC4_ROM0_BASE, board->rom0_def_filename);
@@ -78,7 +79,7 @@ static void digic4_board_init(DigicBoard *board)
     }
 }
 
-static void digic_load_rom(DigicBoardState *s, hwaddr addr,
+static void digic_load_rom(DigicState *s, hwaddr addr,
                            hwaddr max_size, const char *def_filename)
 {
     target_long rom_size;
@@ -118,7 +119,7 @@ static void digic_load_rom(DigicBoardState *s, hwaddr addr,
  * Samsung K8P3215UQB
  * 64M Bit (4Mx16) Page Mode / Multi-Bank NOR Flash Memory
  */
-static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr,
+static void digic4_add_k8p3215uqb_rom(DigicState *s, hwaddr addr,
                                       const char *def_filename)
 {
 #define FLASH_K8P3215UQB_SIZE (4 * 1024 * 1024)
@@ -135,14 +136,13 @@ static void digic4_add_k8p3215uqb_rom(DigicBoardState *s, hwaddr addr,
 }
 
 static DigicBoard digic4_board_canon_a1100 = {
-    .ram_size = 64 * 1024 * 1024,
     .add_rom1 = digic4_add_k8p3215uqb_rom,
     .rom1_def_filename = "canon-a1100-rom1.bin",
 };
 
 static void canon_a1100_init(MachineState *machine)
 {
-    digic4_board_init(&digic4_board_canon_a1100);
+    digic4_board_init(machine, &digic4_board_canon_a1100);
 }
 
 static void canon_a1100_machine_init(MachineClass *mc)
@@ -150,6 +150,8 @@ static void canon_a1100_machine_init(MachineClass *mc)
     mc->desc = "Canon PowerShot A1100 IS";
     mc->init = &canon_a1100_init;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_size = 64 * MiB;
+    mc->default_ram_id = "ram";
 }
 
 DEFINE_MACHINE("canon-a1100", canon_a1100_machine_init)
-- 
2.18.1

[PATCH v5 14/79] arm/highbank: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
CC: robh@kernel.org
---
 hw/arm/highbank.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/arm/highbank.c b/hw/arm/highbank.c
index 518d935fdf..ac9de9411e 100644
--- a/hw/arm/highbank.c
+++ b/hw/arm/highbank.c
@@ -236,7 +236,6 @@ enum cxmachines {
  */
 static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
 {
-    ram_addr_t ram_size = machine->ram_size;
     DeviceState *dev = NULL;
     SysBusDevice *busdev;
     qemu_irq pic[128];
@@ -247,7 +246,6 @@ static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
     qemu_irq cpu_virq[4];
     qemu_irq cpu_vfiq[4];
     MemoryRegion *sysram;
-    MemoryRegion *dram;
     MemoryRegion *sysmem;
     char *sysboot_filename;
 
@@ -290,10 +288,8 @@ static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
     }
 
     sysmem = get_system_memory();
-    dram = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(dram, NULL, "highbank.dram", ram_size);
     /* SDRAM at address zero.  */
-    memory_region_add_subregion(sysmem, 0, dram);
+    memory_region_add_subregion(sysmem, 0, machine->ram);
 
     sysram = g_new(MemoryRegion, 1);
     memory_region_init_ram(sysram, NULL, "highbank.sysram", 0x8000,
@@ -387,7 +383,7 @@ static void calxeda_init(MachineState *machine, enum cxmachines machine_id)
 
     /* TODO create and connect IDE devices for ide_drive_get() */
 
-    highbank_binfo.ram_size = ram_size;
+    highbank_binfo.ram_size = machine->ram_size;
     /* highbank requires a dtb in order to boot, and the dtb will override
      * the board ID. The following value is ignored, so set it to -1 to be
      * clear that the value is meaningless.
@@ -430,6 +426,7 @@ static void highbank_class_init(ObjectClass *oc, void *data)
     mc->units_per_default_bus = 1;
     mc->max_cpus = 4;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "highbank.dram";
 }
 
 static const TypeInfo highbank_type = {
@@ -448,6 +445,7 @@ static void midway_class_init(ObjectClass *oc, void *data)
     mc->units_per_default_bus = 1;
     mc->max_cpus = 4;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "highbank.dram";
 }
 
 static const TypeInfo midway_type = {
-- 
2.18.1

[PATCH v5 15/79] arm/imx25_pdk: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported.
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: jcd@tribudubois.net
CC: peter.maydell@linaro.org
CC: qemu-arm@nongnu.org
CC: philmd@redhat.com
---
 hw/arm/imx25_pdk.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c
index c76fc2bd94..a2b7b35dcc 100644
--- a/hw/arm/imx25_pdk.c
+++ b/hw/arm/imx25_pdk.c
@@ -78,10 +78,10 @@ static void imx25_pdk_init(MachineState *machine)
 
     /* We need to initialize our memory */
     if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
-        warn_report("RAM size " RAM_ADDR_FMT " above max supported, "
+        error_report("RAM size " RAM_ADDR_FMT " above max supported, "
                     "reduced to %x", machine->ram_size,
                     FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE);
-        machine->ram_size = FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE;
+        exit(EXIT_FAILURE);
     }
 
     memory_region_allocate_system_memory(&s->ram, NULL, "imx25.ram",
-- 
2.18.1

[PATCH v5 16/79] arm/imx25_pdk: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
CC: jcd@tribudubois.net
---
 hw/arm/imx25_pdk.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c
index a2b7b35dcc..9087fcbb80 100644
--- a/hw/arm/imx25_pdk.c
+++ b/hw/arm/imx25_pdk.c
@@ -58,7 +58,6 @@
 
 typedef struct IMX25PDK {
     FslIMX25State soc;
-    MemoryRegion ram;
     MemoryRegion ram_alias;
 } IMX25PDK;
 
@@ -84,10 +83,8 @@ static void imx25_pdk_init(MachineState *machine)
         exit(EXIT_FAILURE);
     }
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "imx25.ram",
-                                         machine->ram_size);
     memory_region_add_subregion(get_system_memory(), FSL_IMX25_SDRAM0_ADDR,
-                                &s->ram);
+                                machine->ram);
 
     /* initialize the alias memory if any */
     for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
@@ -107,7 +104,8 @@ static void imx25_pdk_init(MachineState *machine)
 
         if (size < ram[i].size) {
             memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
-                                     &s->ram, alias_offset, ram[i].size - size);
+                                     machine->ram,
+                                     alias_offset, ram[i].size - size);
             memory_region_add_subregion(get_system_memory(),
                                         ram[i].addr + size, &s->ram_alias);
         }
@@ -135,6 +133,7 @@ static void imx25_pdk_machine_init(MachineClass *mc)
     mc->desc = "ARM i.MX25 PDK board (ARM926)";
     mc->init = imx25_pdk_init;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "imx25.ram";
 }
 
 DEFINE_MACHINE("imx25-pdk", imx25_pdk_machine_init)
-- 
2.18.1

[PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
CC: peter.chubb@nicta.com.au
---
 hw/arm/integratorcp.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
index 0cd94d9f09..cc845b8534 100644
--- a/hw/arm/integratorcp.c
+++ b/hw/arm/integratorcp.c
@@ -585,7 +585,6 @@ static void integratorcp_init(MachineState *machine)
     Object *cpuobj;
     ARMCPU *cpu;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
     qemu_irq pic[32];
     DeviceState *dev, *sic, *icp;
@@ -605,14 +604,13 @@ static void integratorcp_init(MachineState *machine)
 
     cpu = ARM_CPU(cpuobj);
 
-    memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
-                                         ram_size);
     /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
     /* ??? RAM should repeat to fill physical memory space.  */
     /* SDRAM at address zero*/
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
     /* And again at address 0x80000000 */
-    memory_region_init_alias(ram_alias, NULL, "ram.alias", ram, 0, ram_size);
+    memory_region_init_alias(ram_alias, NULL, "ram.alias", machine->ram,
+                             0, ram_size);
     memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
 
     dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
@@ -660,6 +658,7 @@ static void integratorcp_machine_init(MachineClass *mc)
     mc->init = integratorcp_init;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
+    mc->default_ram_id = "integrator.ram";
 }
 
 DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
-- 
2.18.1

[PATCH v5 18/79] arm/kzm: drop RAM size fixup

[Igor Mammedov]

If the user provided too large a RAM size, the code used to
complain and trim it to the max size.  Now that RAM is allocated by
generic code, that's no longer possible, so generate an error and
exit instead.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Chubb <peter.chubb@data61.csiro.au>
---
v3:
 * rephrase commit message in nicer way
   ("Chubb, Peter (Data61, Kensington NSW)" <Peter.Chubb@data61.csiro.au>)
 * reword error message and use size_to_str() to pretty print suggested size
   ("Chubb, Peter (Data61, Kensington NSW)" <Peter.Chubb@data61.csiro.au>)
---
 hw/arm/kzm.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/hw/arm/kzm.c b/hw/arm/kzm.c
index 1d5ef289d5..94cbac11de 100644
--- a/hw/arm/kzm.c
+++ b/hw/arm/kzm.c
@@ -25,6 +25,7 @@
 #include "hw/char/serial.h"
 #include "sysemu/qtest.h"
 #include "sysemu/sysemu.h"
+#include "qemu/cutils.h"
 
 /* Memory map for Kzm Emulation Baseboard:
  * 0x00000000-0x7fffffff See i.MX31 SOC for support
@@ -78,10 +79,10 @@ static void kzm_init(MachineState *machine)
 
     /* Check the amount of memory is compatible with the SOC */
     if (machine->ram_size > (FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE)) {
-        warn_report("RAM size " RAM_ADDR_FMT " above max supported, "
-                    "reduced to %x", machine->ram_size,
-                    FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE);
-        machine->ram_size = FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE;
+        char *sz = size_to_str(FSL_IMX31_SDRAM0_SIZE + FSL_IMX31_SDRAM1_SIZE);
+        error_report("RAM size more than %s is not supported", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
     }
 
     memory_region_allocate_system_memory(&s->ram, NULL, "kzm.ram",
-- 
2.18.1

[PATCH v5 19/79] arm/kzm: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Peter Chubb <peter.chubb@data61.csiro.au>
---
 hw/arm/kzm.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/hw/arm/kzm.c b/hw/arm/kzm.c
index 94cbac11de..34f6bcb491 100644
--- a/hw/arm/kzm.c
+++ b/hw/arm/kzm.c
@@ -52,7 +52,6 @@
 
 typedef struct IMX31KZM {
     FslIMX31State soc;
-    MemoryRegion ram;
     MemoryRegion ram_alias;
 } IMX31KZM;
 
@@ -85,10 +84,8 @@ static void kzm_init(MachineState *machine)
         exit(EXIT_FAILURE);
     }
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "kzm.ram",
-                                         machine->ram_size);
     memory_region_add_subregion(get_system_memory(), FSL_IMX31_SDRAM0_ADDR,
-                                &s->ram);
+                                machine->ram);
 
     /* initialize the alias memory if any */
     for (i = 0, ram_size = machine->ram_size, alias_offset = 0;
@@ -108,7 +105,8 @@ static void kzm_init(MachineState *machine)
 
         if (size < ram[i].size) {
             memory_region_init_alias(&s->ram_alias, NULL, "ram.alias",
-                                     &s->ram, alias_offset, ram[i].size - size);
+                                     machine->ram,
+                                     alias_offset, ram[i].size - size);
             memory_region_add_subregion(get_system_memory(),
                                         ram[i].addr + size, &s->ram_alias);
         }
@@ -140,6 +138,7 @@ static void kzm_machine_init(MachineClass *mc)
     mc->desc = "ARM KZM Emulation Baseboard (ARM1136)";
     mc->init = kzm_init;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "kzm.ram";
 }
 
 DEFINE_MACHINE("kzm", kzm_machine_init)
-- 
2.18.1

[PATCH v5 20/79] arm/mcimx6ul-evk: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
  remove no longer needed MCIMX6ULEVK

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
CC: jcd@tribudubois.net
---
 hw/arm/mcimx6ul-evk.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/hw/arm/mcimx6ul-evk.c b/hw/arm/mcimx6ul-evk.c
index e90b393a44..23a71ed378 100644
--- a/hw/arm/mcimx6ul-evk.c
+++ b/hw/arm/mcimx6ul-evk.c
@@ -19,15 +19,10 @@
 #include "qemu/error-report.h"
 #include "sysemu/qtest.h"
 
-typedef struct {
-    FslIMX6ULState soc;
-    MemoryRegion ram;
-} MCIMX6ULEVK;
-
 static void mcimx6ul_evk_init(MachineState *machine)
 {
     static struct arm_boot_info boot_info;
-    MCIMX6ULEVK *s = g_new0(MCIMX6ULEVK, 1);
+    FslIMX6ULState *s;
     int i;
 
     if (machine->ram_size > FSL_IMX6UL_MMDC_SIZE) {
@@ -43,15 +38,12 @@ static void mcimx6ul_evk_init(MachineState *machine)
         .nb_cpus = machine->smp.cpus,
     };
 
-    object_initialize_child(OBJECT(machine), "soc", &s->soc,  sizeof(s->soc),
-                            TYPE_FSL_IMX6UL, &error_fatal, NULL);
-
-    object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_fatal);
+    s = FSL_IMX6UL(object_new(TYPE_FSL_IMX6UL));
+    object_property_add_child(OBJECT(machine), "soc", OBJECT(s), &error_fatal);
+    object_property_set_bool(OBJECT(s), true, "realized", &error_fatal);
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "mcimx6ul-evk.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(get_system_memory(),
-                                FSL_IMX6UL_MMDC_ADDR, &s->ram);
+    memory_region_add_subregion(get_system_memory(), FSL_IMX6UL_MMDC_ADDR,
+                                machine->ram);
 
     for (i = 0; i < FSL_IMX6UL_NUM_USDHCS; i++) {
         BusState *bus;
@@ -61,7 +53,7 @@ static void mcimx6ul_evk_init(MachineState *machine)
 
         di = drive_get_next(IF_SD);
         blk = di ? blk_by_legacy_dinfo(di) : NULL;
-        bus = qdev_get_child_bus(DEVICE(&s->soc.usdhc[i]), "sd-bus");
+        bus = qdev_get_child_bus(DEVICE(&s->usdhc[i]), "sd-bus");
         carddev = qdev_create(bus, TYPE_SD_CARD);
         qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
         object_property_set_bool(OBJECT(carddev), true,
@@ -69,7 +61,7 @@ static void mcimx6ul_evk_init(MachineState *machine)
     }
 
     if (!qtest_enabled()) {
-        arm_load_kernel(&s->soc.cpu, machine, &boot_info);
+        arm_load_kernel(&s->cpu, machine, &boot_info);
     }
 }
 
@@ -78,5 +70,6 @@ static void mcimx6ul_evk_machine_init(MachineClass *mc)
     mc->desc = "Freescale i.MX6UL Evaluation Kit (Cortex A7)";
     mc->init = mcimx6ul_evk_init;
     mc->max_cpus = FSL_IMX6UL_NUM_CPUS;
+    mc->default_ram_id = "mcimx6ul-evk.ram";
 }
 DEFINE_MACHINE("mcimx6ul-evk", mcimx6ul_evk_machine_init)
-- 
2.18.1

[PATCH v5 21/79] arm/mcimx7d-sabre: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 remove no longer needed MCIMX7Sabre

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
CC: andrew.smirnov@gmail.com
---
 hw/arm/mcimx7d-sabre.c | 25 +++++++++----------------
 1 file changed, 9 insertions(+), 16 deletions(-)

diff --git a/hw/arm/mcimx7d-sabre.c b/hw/arm/mcimx7d-sabre.c
index 0d1f62d30a..de1e264217 100644
--- a/hw/arm/mcimx7d-sabre.c
+++ b/hw/arm/mcimx7d-sabre.c
@@ -21,15 +21,10 @@
 #include "qemu/error-report.h"
 #include "sysemu/qtest.h"
 
-typedef struct {
-    FslIMX7State soc;
-    MemoryRegion ram;
-} MCIMX7Sabre;
-
 static void mcimx7d_sabre_init(MachineState *machine)
 {
     static struct arm_boot_info boot_info;
-    MCIMX7Sabre *s = g_new0(MCIMX7Sabre, 1);
+    FslIMX7State *s;
     int i;
 
     if (machine->ram_size > FSL_IMX7_MMDC_SIZE) {
@@ -45,15 +40,12 @@ static void mcimx7d_sabre_init(MachineState *machine)
         .nb_cpus = machine->smp.cpus,
     };
 
-    object_initialize_child(OBJECT(machine), "soc",
-                            &s->soc, sizeof(s->soc),
-                            TYPE_FSL_IMX7, &error_fatal, NULL);
-    object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_fatal);
+    s = FSL_IMX7(object_new(TYPE_FSL_IMX7));
+    object_property_add_child(OBJECT(machine), "soc", OBJECT(s), &error_fatal);
+    object_property_set_bool(OBJECT(s), true, "realized", &error_fatal);
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "mcimx7d-sabre.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(get_system_memory(),
-                                FSL_IMX7_MMDC_ADDR, &s->ram);
+    memory_region_add_subregion(get_system_memory(), FSL_IMX7_MMDC_ADDR,
+                                machine->ram);
 
     for (i = 0; i < FSL_IMX7_NUM_USDHCS; i++) {
         BusState *bus;
@@ -63,7 +55,7 @@ static void mcimx7d_sabre_init(MachineState *machine)
 
         di = drive_get_next(IF_SD);
         blk = di ? blk_by_legacy_dinfo(di) : NULL;
-        bus = qdev_get_child_bus(DEVICE(&s->soc.usdhc[i]), "sd-bus");
+        bus = qdev_get_child_bus(DEVICE(&s->usdhc[i]), "sd-bus");
         carddev = qdev_create(bus, TYPE_SD_CARD);
         qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
         object_property_set_bool(OBJECT(carddev), true,
@@ -71,7 +63,7 @@ static void mcimx7d_sabre_init(MachineState *machine)
     }
 
     if (!qtest_enabled()) {
-        arm_load_kernel(&s->soc.cpu[0], machine, &boot_info);
+        arm_load_kernel(&s->cpu[0], machine, &boot_info);
     }
 }
 
@@ -80,5 +72,6 @@ static void mcimx7d_sabre_machine_init(MachineClass *mc)
     mc->desc = "Freescale i.MX7 DUAL SABRE (Cortex A7)";
     mc->init = mcimx7d_sabre_init;
     mc->max_cpus = FSL_IMX7_NUM_CPUS;
+    mc->default_ram_id = "mcimx7d-sabre.ram";
 }
 DEFINE_MACHINE("mcimx7d-sabre", mcimx7d_sabre_machine_init)
-- 
2.18.1

[PATCH v5 22/79] arm/mps2-tz: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
v4:
  * move default_ram_size to mps2tz_class_init()
    (Andrew Jones <drjones@redhat.com>)
---
 hw/arm/mps2-tz.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c
index f8b620bcc6..a8dea7dde1 100644
--- a/hw/arm/mps2-tz.c
+++ b/hw/arm/mps2-tz.c
@@ -39,6 +39,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "qemu/cutils.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "hw/arm/boot.h"
@@ -79,7 +80,6 @@ typedef struct {
     MachineState parent;
 
     ARMSSE iotkit;
-    MemoryRegion psram;
     MemoryRegion ssram[3];
     MemoryRegion ssram1_m;
     MPS2SCC scc;
@@ -388,6 +388,13 @@ static void mps2tz_common_init(MachineState *machine)
         exit(1);
     }
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     sysbus_init_child_obj(OBJECT(machine), "iotkit", &mms->iotkit,
                           sizeof(mms->iotkit), mmc->armsse_type);
     iotkitdev = DEVICE(&mms->iotkit);
@@ -458,9 +465,7 @@ static void mps2tz_common_init(MachineState *machine)
      * tradeoffs. For QEMU they're all just RAM, though. We arbitrarily
      * call the 16MB our "system memory", as it's the largest lump.
      */
-    memory_region_allocate_system_memory(&mms->psram,
-                                         NULL, "mps.ram", 16 * MiB);
-    memory_region_add_subregion(system_memory, 0x80000000, &mms->psram);
+    memory_region_add_subregion(system_memory, 0x80000000, machine->ram);
 
     /* The overflow IRQs for all UARTs are ORed together.
      * Tx, Rx and "combined" IRQs are sent to the NVIC separately.
@@ -642,6 +647,8 @@ static void mps2tz_class_init(ObjectClass *oc, void *data)
 
     mc->init = mps2tz_common_init;
     iic->check = mps2_tz_idau_check;
+    mc->default_ram_size = 16 * MiB;
+    mc->default_ram_id = "mps.ram";
 }
 
 static void mps2tz_an505_class_init(ObjectClass *oc, void *data)
-- 
2.18.1

[PATCH v5 23/79] arm/mps2: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
---
 hw/arm/mps2.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/hw/arm/mps2.c b/hw/arm/mps2.c
index d002b126d3..f246213206 100644
--- a/hw/arm/mps2.c
+++ b/hw/arm/mps2.c
@@ -24,6 +24,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "qemu/cutils.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "hw/arm/boot.h"
@@ -55,7 +56,6 @@ typedef struct {
     MachineState parent;
 
     ARMv7MState armv7m;
-    MemoryRegion psram;
     MemoryRegion ssram1;
     MemoryRegion ssram1_m;
     MemoryRegion ssram23;
@@ -118,6 +118,13 @@ static void mps2_common_init(MachineState *machine)
         exit(1);
     }
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     /* The FPGA images have an odd combination of different RAMs,
      * because in hardware they are different implementations and
      * connected to different buses, giving varying performance/size
@@ -146,9 +153,7 @@ static void mps2_common_init(MachineState *machine)
      * This is of no use for QEMU so we don't implement it (as if
      * zbt_boot_ctrl is always zero).
      */
-    memory_region_allocate_system_memory(&mms->psram,
-                                         NULL, "mps.ram", 16 * MiB);
-    memory_region_add_subregion(system_memory, 0x21000000, &mms->psram);
+    memory_region_add_subregion(system_memory, 0x21000000, machine->ram);
 
     switch (mmc->fpga_type) {
     case FPGA_AN385:
@@ -338,6 +343,8 @@ static void mps2_class_init(ObjectClass *oc, void *data)
 
     mc->init = mps2_common_init;
     mc->max_cpus = 1;
+    mc->default_ram_size = 16 * MiB;
+    mc->default_ram_id = "mps.ram";
 }
 
 static void mps2_an385_class_init(ObjectClass *oc, void *data)
-- 
2.18.1

[PATCH v5 24/79] arm/musicpal: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: jan.kiszka@web.de
---
 hw/arm/musicpal.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index dc551bb0c0..db8b03cb83 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -32,6 +32,7 @@
 #include "sysemu/runstate.h"
 #include "exec/address-spaces.h"
 #include "ui/pixel_ops.h"
+#include "qemu/cutils.h"
 
 #define MP_MISC_BASE            0x80002000
 #define MP_MISC_SIZE            0x00001000
@@ -1589,16 +1590,21 @@ static void musicpal_init(MachineState *machine)
     int i;
     unsigned long flash_size;
     DriveInfo *dinfo;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
+    /* For now we use a fixed - the original - RAM size */
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     cpu = ARM_CPU(cpu_create(machine->cpu_type));
 
-    /* For now we use a fixed - the original - RAM size */
-    memory_region_allocate_system_memory(ram, NULL, "musicpal.ram",
-                                         MP_RAM_DEFAULT_SIZE);
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     memory_region_init_ram(sram, NULL, "musicpal.sram", MP_SRAM_SIZE,
                            &error_fatal);
@@ -1714,6 +1720,8 @@ static void musicpal_machine_init(MachineClass *mc)
     mc->init = musicpal_init;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
+    mc->default_ram_size = MP_RAM_DEFAULT_SIZE;
+    mc->default_ram_id = "musicpal.ram";
 }
 
 DEFINE_MACHINE("musicpal", musicpal_machine_init)
-- 
2.18.1

[PATCH v5 25/79] arm/nseries: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: balrogg@gmail.com
---
 hw/arm/nseries.c | 32 +++++++++++++++++++-------------
 1 file changed, 19 insertions(+), 13 deletions(-)

diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
index 3fd196fb30..eae800b5c1 100644
--- a/hw/arm/nseries.c
+++ b/hw/arm/nseries.c
@@ -47,7 +47,6 @@
 
 /* Nokia N8x0 support */
 struct n800_s {
-    MemoryRegion sdram;
     struct omap_mpu_state_s *mpu;
 
     struct rfbi_chip_s blizzard;
@@ -1311,13 +1310,19 @@ static void n8x0_init(MachineState *machine,
                       struct arm_boot_info *binfo, int model)
 {
     struct n800_s *s = (struct n800_s *) g_malloc0(sizeof(*s));
-    uint64_t sdram_size = binfo->ram_size;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
 
-    memory_region_allocate_system_memory(&s->sdram, NULL, "omap2.dram",
-                                         sdram_size);
-    memory_region_add_subregion(get_system_memory(), OMAP2_Q2_BASE, &s->sdram);
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
+    memory_region_add_subregion(get_system_memory(), OMAP2_Q2_BASE,
+                                machine->ram);
 
-    s->mpu = omap2420_mpu_init(&s->sdram, machine->cpu_type);
+    s->mpu = omap2420_mpu_init(machine->ram, machine->cpu_type);
 
     /* Setup peripherals
      *
@@ -1383,9 +1388,8 @@ static void n8x0_init(MachineState *machine,
          *
          * The code above is for loading the `zImage' file from Nokia
          * images.  */
-        load_image_targphys(option_rom[0].name,
-                            OMAP2_Q2_BASE + 0x400000,
-                            sdram_size - 0x400000);
+        load_image_targphys(option_rom[0].name, OMAP2_Q2_BASE + 0x400000,
+                            machine->ram_size - 0x400000);
 
         n800_setup_nolo_tags(nolo_tags);
         cpu_physical_memory_write(OMAP2_SRAM_BASE, nolo_tags, 0x10000);
@@ -1395,16 +1399,12 @@ static void n8x0_init(MachineState *machine,
 
 static struct arm_boot_info n800_binfo = {
     .loader_start = OMAP2_Q2_BASE,
-    /* Actually two chips of 0x4000000 bytes each */
-    .ram_size = 0x08000000,
     .board_id = 0x4f7,
     .atag_board = n800_atag_setup,
 };
 
 static struct arm_boot_info n810_binfo = {
     .loader_start = OMAP2_Q2_BASE,
-    /* Actually two chips of 0x4000000 bytes each */
-    .ram_size = 0x08000000,
     /* 0x60c and 0x6bf (WiMAX Edition) have been assigned but are not
      * used by some older versions of the bootloader and 5555 is used
      * instead (including versions that shipped with many devices).  */
@@ -1431,6 +1431,9 @@ static void n800_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "";
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm1136-r2");
+    /* Actually two chips of 0x4000000 bytes each */
+    mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "omap2.dram";
 }
 
 static const TypeInfo n800_type = {
@@ -1448,6 +1451,9 @@ static void n810_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "";
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm1136-r2");
+    /* Actually two chips of 0x4000000 bytes each */
+    mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "omap2.dram";
 }
 
 static const TypeInfo n810_type = {
-- 
2.18.1

[PATCH v5 26/79] arm/omap_sx1: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
---
 hw/arm/omap_sx1.c | 20 +++++++++++++++-----
 1 file changed, 15 insertions(+), 5 deletions(-)

diff --git a/hw/arm/omap_sx1.c b/hw/arm/omap_sx1.c
index be245714db..2bebab4171 100644
--- a/hw/arm/omap_sx1.c
+++ b/hw/arm/omap_sx1.c
@@ -35,6 +35,7 @@
 #include "sysemu/qtest.h"
 #include "exec/address-spaces.h"
 #include "cpu.h"
+#include "qemu/cutils.h"
 
 /*****************************************************************************/
 /* Siemens SX1 Cellphone V1 */
@@ -102,8 +103,8 @@ static struct arm_boot_info sx1_binfo = {
 static void sx1_init(MachineState *machine, const int version)
 {
     struct omap_mpu_state_s *mpu;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     MemoryRegion *address_space = get_system_memory();
-    MemoryRegion *dram = g_new(MemoryRegion, 1);
     MemoryRegion *flash = g_new(MemoryRegion, 1);
     MemoryRegion *cs = g_new(MemoryRegion, 4);
     static uint32_t cs0val = 0x00213090;
@@ -115,15 +116,20 @@ static void sx1_init(MachineState *machine, const int version)
     uint32_t flash_size = flash0_size;
     int be;
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     if (version == 2) {
         flash_size = flash2_size;
     }
 
-    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
-                                         sx1_binfo.ram_size);
-    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, dram);
+    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, machine->ram);
 
-    mpu = omap310_mpu_init(dram, machine->cpu_type);
+    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
 
     /* External Flash (EMIFS) */
     memory_region_init_ram(flash, NULL, "omap_sx1.flash0-0", flash_size,
@@ -223,6 +229,8 @@ static void sx1_machine_v2_class_init(ObjectClass *oc, void *data)
     mc->init = sx1_init_v2;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
+    mc->default_ram_size = sdram_size;
+    mc->default_ram_id = "omap1.dram";
 }
 
 static const TypeInfo sx1_machine_v2_type = {
@@ -239,6 +247,8 @@ static void sx1_machine_v1_class_init(ObjectClass *oc, void *data)
     mc->init = sx1_init_v1;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
+    mc->default_ram_size = sdram_size;
+    mc->default_ram_id = "omap1.dram";
 }
 
 static const TypeInfo sx1_machine_v1_type = {
-- 
2.18.1

[PATCH v5 27/79] arm/palm: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: balrogg@gmail.com
---
 hw/arm/palm.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/hw/arm/palm.c b/hw/arm/palm.c
index 72eca8cc55..388b2629a5 100644
--- a/hw/arm/palm.c
+++ b/hw/arm/palm.c
@@ -31,6 +31,7 @@
 #include "hw/loader.h"
 #include "exec/address-spaces.h"
 #include "cpu.h"
+#include "qemu/cutils.h"
 
 static uint64_t static_read(void *opaque, hwaddr offset, unsigned size)
 {
@@ -181,7 +182,6 @@ static void palmte_gpio_setup(struct omap_mpu_state_s *cpu)
 
 static struct arm_boot_info palmte_binfo = {
     .loader_start = OMAP_EMIFF_BASE,
-    .ram_size = 0x02000000,
     .board_id = 0x331,
 };
 
@@ -195,15 +195,21 @@ static void palmte_init(MachineState *machine)
     static uint32_t cs2val = 0x0000e1a0;
     static uint32_t cs3val = 0xe1a0e1a0;
     int rom_size, rom_loaded = 0;
-    MemoryRegion *dram = g_new(MemoryRegion, 1);
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     MemoryRegion *flash = g_new(MemoryRegion, 1);
     MemoryRegion *cs = g_new(MemoryRegion, 4);
 
-    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
-                                         palmte_binfo.ram_size);
-    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE, dram);
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
+    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE,
+                                machine->ram);
 
-    mpu = omap310_mpu_init(dram, machine->cpu_type);
+    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
 
     /* External Flash (EMIFS) */
     memory_region_init_ram(flash, NULL, "palmte.flash", flash_size,
@@ -265,6 +271,8 @@ static void palmte_machine_init(MachineClass *mc)
     mc->init = palmte_init;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
+    mc->default_ram_size = 0x02000000;
+    mc->default_ram_id = "omap1.dram";
 }
 
 DEFINE_MACHINE("cheetah", palmte_machine_init)
-- 
2.18.1

[PATCH v5 28/79] arm/sabrelite: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 remove no longer needed IMX6Sabrelite

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
CC: jcd@tribudubois.net
---
 hw/arm/sabrelite.c | 23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)

diff --git a/hw/arm/sabrelite.c b/hw/arm/sabrelite.c
index 96cc455c5c..e31694bb92 100644
--- a/hw/arm/sabrelite.c
+++ b/hw/arm/sabrelite.c
@@ -19,11 +19,6 @@
 #include "qemu/error-report.h"
 #include "sysemu/qtest.h"
 
-typedef struct IMX6Sabrelite {
-    FslIMX6State soc;
-    MemoryRegion ram;
-} IMX6Sabrelite;
-
 static struct arm_boot_info sabrelite_binfo = {
     /* DDR memory start */
     .loader_start = FSL_IMX6_MMDC_ADDR,
@@ -45,7 +40,7 @@ static void sabrelite_reset_secondary(ARMCPU *cpu,
 
 static void sabrelite_init(MachineState *machine)
 {
-    IMX6Sabrelite *s = g_new0(IMX6Sabrelite, 1);
+    FslIMX6State *s;
     Error *err = NULL;
 
     /* Check the amount of memory is compatible with the SOC */
@@ -55,19 +50,16 @@ static void sabrelite_init(MachineState *machine)
         exit(1);
     }
 
-    object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc),
-                            TYPE_FSL_IMX6, &error_abort, NULL);
-
-    object_property_set_bool(OBJECT(&s->soc), true, "realized", &err);
+    s = FSL_IMX6(object_new(TYPE_FSL_IMX6));
+    object_property_add_child(OBJECT(machine), "soc", OBJECT(s), &error_fatal);
+    object_property_set_bool(OBJECT(s), true, "realized", &err);
     if (err != NULL) {
         error_report("%s", error_get_pretty(err));
         exit(1);
     }
 
-    memory_region_allocate_system_memory(&s->ram, NULL, "sabrelite.ram",
-                                         machine->ram_size);
     memory_region_add_subregion(get_system_memory(), FSL_IMX6_MMDC_ADDR,
-                                &s->ram);
+                                machine->ram);
 
     {
         /*
@@ -78,7 +70,7 @@ static void sabrelite_init(MachineState *machine)
         /* Add the sst25vf016b NOR FLASH memory to first SPI */
         Object *spi_dev;
 
-        spi_dev = object_resolve_path_component(OBJECT(&s->soc), "spi1");
+        spi_dev = object_resolve_path_component(OBJECT(s), "spi1");
         if (spi_dev) {
             SSIBus *spi_bus;
 
@@ -109,7 +101,7 @@ static void sabrelite_init(MachineState *machine)
     sabrelite_binfo.secondary_cpu_reset_hook = sabrelite_reset_secondary;
 
     if (!qtest_enabled()) {
-        arm_load_kernel(&s->soc.cpu[0], machine, &sabrelite_binfo);
+        arm_load_kernel(&s->cpu[0], machine, &sabrelite_binfo);
     }
 }
 
@@ -119,6 +111,7 @@ static void sabrelite_machine_init(MachineClass *mc)
     mc->init = sabrelite_init;
     mc->max_cpus = FSL_IMX6_NUM_CPUS;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "sabrelite.ram";
 }
 
 DEFINE_MACHINE("sabrelite", sabrelite_machine_init)
-- 
2.18.1

[PATCH v5 29/79] arm/raspi: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
    MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: Andrew.Baumann@microsoft.com
CC: philmd@redhat.com

v5:
      * fixed rebase conflicts once more
v4:
      * fixed rebase conflicts
---
 hw/arm/raspi.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
index 90ad9b8115..acd2bb794d 100644
--- a/hw/arm/raspi.c
+++ b/hw/arm/raspi.c
@@ -39,7 +39,6 @@ typedef struct RaspiMachineState {
     MachineState parent_obj;
     /*< public >*/
     BCM283XState soc;
-    MemoryRegion ram;
 } RaspiMachineState;
 
 typedef struct RaspiMachineClass {
@@ -277,16 +276,14 @@ static void raspi_machine_init(MachineState *machine)
         exit(1);
     }
 
-    /* Allocate and map RAM */
-    memory_region_allocate_system_memory(&s->ram, OBJECT(machine), "ram",
-                                         machine->ram_size);
     /* FIXME: Remove when we have custom CPU address space support */
-    memory_region_add_subregion_overlap(get_system_memory(), 0, &s->ram, 0);
+    memory_region_add_subregion_overlap(get_system_memory(), 0,
+                                        machine->ram, 0);
 
     /* Setup the SOC */
     object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc),
                             board_soc_type(board_rev), &error_abort, NULL);
-    object_property_add_const_link(OBJECT(&s->soc), "ram", OBJECT(&s->ram),
+    object_property_add_const_link(OBJECT(&s->soc), "ram", OBJECT(machine->ram),
                                    &error_abort);
     object_property_set_int(OBJECT(&s->soc), board_rev, "board-rev",
                             &error_abort);
@@ -324,6 +321,7 @@ static void raspi_machine_class_init(ObjectClass *oc, void *data)
     mc->no_cdrom = 1;
     mc->default_cpus = mc->min_cpus = mc->max_cpus = cores_count(board_rev);
     mc->default_ram_size = board_ram_size(board_rev);
+    mc->default_ram_id = "ram";
     if (board_version(board_rev) == 2) {
         mc->ignore_memory_transaction_failures = true;
     }
-- 
2.18.1

[PATCH v5 30/79] arm/sbsa-ref: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
CC: radoslaw.biernacki@linaro.org
CC: leif.lindholm@linaro.org
---
 hw/arm/sbsa-ref.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index 9b5bcb5634..1cba9fc302 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -593,7 +593,6 @@ static void sbsa_ref_init(MachineState *machine)
     MachineClass *mc = MACHINE_GET_CLASS(machine);
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *secure_sysmem = g_new(MemoryRegion, 1);
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     bool firmware_loaded;
     const CPUArchIdList *possible_cpus;
     int n, sbsa_max_cpus;
@@ -685,9 +684,8 @@ static void sbsa_ref_init(MachineState *machine)
         object_unref(cpuobj);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "sbsa-ref.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, sbsa_ref_memmap[SBSA_MEM].base, ram);
+    memory_region_add_subregion(sysmem, sbsa_ref_memmap[SBSA_MEM].base,
+                                machine->ram);
 
     create_fdt(sms);
 
@@ -785,6 +783,7 @@ static void sbsa_ref_class_init(ObjectClass *oc, void *data)
     mc->block_default_type = IF_IDE;
     mc->no_cdrom = 1;
     mc->default_ram_size = 1 * GiB;
+    mc->default_ram_id = "sbsa-ref.ram";
     mc->default_cpus = 4;
     mc->possible_cpu_arch_ids = sbsa_ref_possible_cpu_arch_ids;
     mc->cpu_index_to_instance_props = sbsa_ref_cpu_index_to_props;
-- 
2.18.1

[PATCH v5 31/79] arm/versatilepb: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/versatilepb.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
index e86af01537..f3c4a50b19 100644
--- a/hw/arm/versatilepb.c
+++ b/hw/arm/versatilepb.c
@@ -184,7 +184,6 @@ static void versatile_init(MachineState *machine, int board_id)
     Object *cpuobj;
     ARMCPU *cpu;
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     qemu_irq pic[32];
     qemu_irq sic[32];
     DeviceState *dev, *sysctl;
@@ -220,11 +219,9 @@ static void versatile_init(MachineState *machine, int board_id)
 
     cpu = ARM_CPU(cpuobj);
 
-    memory_region_allocate_system_memory(ram, NULL, "versatile.ram",
-                                         machine->ram_size);
     /* ??? RAM should repeat to fill physical memory space.  */
     /* SDRAM at address zero.  */
-    memory_region_add_subregion(sysmem, 0, ram);
+    memory_region_add_subregion(sysmem, 0, machine->ram);
 
     sysctl = qdev_create(NULL, "realview_sysctl");
     qdev_prop_set_uint32(sysctl, "sys_id", 0x41007004);
@@ -398,6 +395,7 @@ static void versatilepb_class_init(ObjectClass *oc, void *data)
     mc->block_default_type = IF_SCSI;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
+    mc->default_ram_id = "versatile.ram";
 }
 
 static const TypeInfo versatilepb_type = {
@@ -415,6 +413,7 @@ static void versatileab_class_init(ObjectClass *oc, void *data)
     mc->block_default_type = IF_SCSI;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
+    mc->default_ram_id = "versatile.ram";
 }
 
 static const TypeInfo versatileab_type = {
-- 
2.18.1

[PATCH v5 32/79] arm/vexpress: use memdev for RAM

[Igor Mammedov]

replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/vexpress.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/hw/arm/vexpress.c b/hw/arm/vexpress.c
index 4673a88a8d..ed683eeea5 100644
--- a/hw/arm/vexpress.c
+++ b/hw/arm/vexpress.c
@@ -273,7 +273,6 @@ static void a9_daughterboard_init(const VexpressMachineState *vms,
 {
     MachineState *machine = MACHINE(vms);
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *lowram = g_new(MemoryRegion, 1);
     ram_addr_t low_ram_size;
 
@@ -283,8 +282,6 @@ static void a9_daughterboard_init(const VexpressMachineState *vms,
         exit(1);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "vexpress.highmem",
-                                         ram_size);
     low_ram_size = ram_size;
     if (low_ram_size > 0x4000000) {
         low_ram_size = 0x4000000;
@@ -293,9 +290,10 @@ static void a9_daughterboard_init(const VexpressMachineState *vms,
      * address space should in theory be remappable to various
      * things including ROM or RAM; we always map the RAM there.
      */
-    memory_region_init_alias(lowram, NULL, "vexpress.lowmem", ram, 0, low_ram_size);
+    memory_region_init_alias(lowram, NULL, "vexpress.lowmem", machine->ram,
+                             0, low_ram_size);
     memory_region_add_subregion(sysmem, 0x0, lowram);
-    memory_region_add_subregion(sysmem, 0x60000000, ram);
+    memory_region_add_subregion(sysmem, 0x60000000, machine->ram);
 
     /* 0x1e000000 A9MPCore (SCU) private memory region */
     init_cpus(machine, cpu_type, TYPE_A9MPCORE_PRIV, 0x1e000000, pic,
@@ -360,7 +358,6 @@ static void a15_daughterboard_init(const VexpressMachineState *vms,
 {
     MachineState *machine = MACHINE(vms);
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
     {
@@ -375,10 +372,8 @@ static void a15_daughterboard_init(const VexpressMachineState *vms,
         }
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "vexpress.highmem",
-                                         ram_size);
     /* RAM is from 0x80000000 upwards; there is no low-memory alias for it. */
-    memory_region_add_subregion(sysmem, 0x80000000, ram);
+    memory_region_add_subregion(sysmem, 0x80000000, machine->ram);
 
     /* 0x2c000000 A15MPCore private memory region (GIC) */
     init_cpus(machine, cpu_type, TYPE_A15MPCORE_PRIV,
@@ -795,6 +790,7 @@ static void vexpress_class_init(ObjectClass *oc, void *data)
     mc->init = vexpress_common_init;
     mc->max_cpus = 4;
     mc->ignore_memory_transaction_failures = true;
+    mc->default_ram_id = "vexpress.highmem";
 }
 
 static void vexpress_a9_class_init(ObjectClass *oc, void *data)
-- 
2.18.1

[PATCH v5 33/79] arm/virt: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away,
so replace it with memdev allocated MemoryRegion.
The later is initialized by generic code, so board only
needs to opt in to memdev scheme by providing
  MachineClass::default_ram_id
and then map memory region provided by
  MachineState::ram_memdev

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
---
 hw/arm/virt.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index f788fe27d6..e591a126e7 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -1512,7 +1512,6 @@ static void machvirt_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *secure_sysmem = NULL;
     int n, virt_max_cpus;
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     bool firmware_loaded;
     bool aarch64 = true;
     bool has_ged = !vmc->no_ged;
@@ -1706,9 +1705,8 @@ static void machvirt_init(MachineState *machine)
         }
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "mach-virt.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base, ram);
+    memory_region_add_subregion(sysmem, vms->memmap[VIRT_MEM].base,
+                                machine->ram);
     if (machine->device_memory) {
         memory_region_add_subregion(sysmem, machine->device_memory->base,
                                     &machine->device_memory->mr);
@@ -2058,6 +2056,7 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     hc->unplug_request = virt_machine_device_unplug_request_cb;
     mc->numa_mem_supported = true;
     mc->auto_enable_numa_with_memhp = true;
+    mc->default_ram_id = "mach-virt.ram";
 }
 
 static void virt_instance_init(Object *obj)
-- 
2.18.1

[PATCH v5 34/79] arm/xilinx_zynq: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported.
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/arm/xilinx_zynq.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
index 3a0fa5b23f..df950fc400 100644
--- a/hw/arm/xilinx_zynq.c
+++ b/hw/arm/xilinx_zynq.c
@@ -158,7 +158,6 @@ static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
 
 static void zynq_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     ARMCPU *cpu;
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
@@ -168,6 +167,12 @@ static void zynq_init(MachineState *machine)
     qemu_irq pic[64];
     int n;
 
+    /* max 2GB ram */
+    if (machine->ram_size > 0x80000000) {
+        error_report("RAM size more than %d is not supported", 0x80000000);
+        exit(EXIT_FAILURE);
+    }
+
     cpu = ARM_CPU(object_new(machine->cpu_type));
 
     /* By default A9 CPUs have EL3 enabled.  This board does not
@@ -184,14 +189,9 @@ static void zynq_init(MachineState *machine)
                             &error_fatal);
     object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
 
-    /* max 2GB ram */
-    if (ram_size > 0x80000000) {
-        ram_size = 0x80000000;
-    }
-
     /* DDR remapped to address zero.  */
     memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
-                                         ram_size);
+                                         machine->ram_size);
     memory_region_add_subregion(address_space_mem, 0, ext_ram);
 
     /* 256K of on-chip memory */
@@ -300,7 +300,7 @@ static void zynq_init(MachineState *machine)
     sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
     sysbus_mmio_map(busdev, 0, 0xF8007000);
 
-    zynq_binfo.ram_size = ram_size;
+    zynq_binfo.ram_size = machine->ram_size;
     zynq_binfo.nb_cpus = 1;
     zynq_binfo.board_id = 0xd32;
     zynq_binfo.loader_start = 0;
-- 
2.18.1

[PATCH v5 35/79] arm/xilinx_zynq: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/arm/xilinx_zynq.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
index df950fc400..0ef9688c5a 100644
--- a/hw/arm/xilinx_zynq.c
+++ b/hw/arm/xilinx_zynq.c
@@ -160,7 +160,6 @@ static void zynq_init(MachineState *machine)
 {
     ARMCPU *cpu;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
     MemoryRegion *ocm_ram = g_new(MemoryRegion, 1);
     DeviceState *dev;
     SysBusDevice *busdev;
@@ -190,9 +189,7 @@ static void zynq_init(MachineState *machine)
     object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
 
     /* DDR remapped to address zero.  */
-    memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(address_space_mem, 0, ext_ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     /* 256K of on-chip memory */
     memory_region_init_ram(ocm_ram, NULL, "zynq.ocm_ram", 256 * KiB,
@@ -318,6 +315,7 @@ static void zynq_machine_init(MachineClass *mc)
     mc->no_sdcard = 1;
     mc->ignore_memory_transaction_failures = true;
     mc->default_cpu_type = ARM_CPU_TYPE_NAME("cortex-a9");
+    mc->default_ram_id = "zynq.ext_ram";
 }
 
 DEFINE_MACHINE("xilinx-zynq-a9", zynq_machine_init)
-- 
2.18.1

[PATCH v5 36/79] arm/xlnx-versal-virt: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/arm/xlnx-versal-virt.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/arm/xlnx-versal-virt.c b/hw/arm/xlnx-versal-virt.c
index 462493c467..c137ff4def 100644
--- a/hw/arm/xlnx-versal-virt.c
+++ b/hw/arm/xlnx-versal-virt.c
@@ -30,7 +30,6 @@ typedef struct VersalVirt {
     MachineState parent_obj;
 
     Versal soc;
-    MemoryRegion mr_ddr;
 
     void *fdt;
     int fdt_size;
@@ -414,12 +413,9 @@ static void versal_virt_init(MachineState *machine)
         psci_conduit = QEMU_PSCI_CONDUIT_SMC;
     }
 
-    memory_region_allocate_system_memory(&s->mr_ddr, NULL, "ddr",
-                                         machine->ram_size);
-
     sysbus_init_child_obj(OBJECT(machine), "xlnx-ve", &s->soc,
                           sizeof(s->soc), TYPE_XLNX_VERSAL);
-    object_property_set_link(OBJECT(&s->soc), OBJECT(&s->mr_ddr),
+    object_property_set_link(OBJECT(&s->soc), OBJECT(machine->ram),
                              "ddr", &error_abort);
     object_property_set_int(OBJECT(&s->soc), psci_conduit,
                             "psci-conduit", &error_abort);
@@ -473,6 +469,7 @@ static void versal_virt_machine_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = XLNX_VERSAL_NR_ACPUS;
     mc->default_cpus = XLNX_VERSAL_NR_ACPUS;
     mc->no_cdrom = true;
+    mc->default_ram_id = "ddr";
 }
 
 static const TypeInfo versal_virt_machine_init_typeinfo = {
-- 
2.18.1

[PATCH v5 37/79] arm/xlnx-zcu102: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 hw/arm/xlnx-zcu102.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/arm/xlnx-zcu102.c b/hw/arm/xlnx-zcu102.c
index 53cfe7c1f1..bd645ad818 100644
--- a/hw/arm/xlnx-zcu102.c
+++ b/hw/arm/xlnx-zcu102.c
@@ -28,7 +28,6 @@ typedef struct XlnxZCU102 {
     MachineState parent_obj;
 
     XlnxZynqMPState soc;
-    MemoryRegion ddr_ram;
 
     bool secure;
     bool virt;
@@ -87,13 +86,10 @@ static void xlnx_zcu102_init(MachineState *machine)
                  ram_size);
     }
 
-    memory_region_allocate_system_memory(&s->ddr_ram, NULL, "ddr-ram",
-                                         ram_size);
-
     object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc),
                             TYPE_XLNX_ZYNQMP, &error_abort, NULL);
 
-    object_property_set_link(OBJECT(&s->soc), OBJECT(&s->ddr_ram),
+    object_property_set_link(OBJECT(&s->soc), OBJECT(machine->ram),
                          "ddr-ram", &error_abort);
     object_property_set_bool(OBJECT(&s->soc), s->secure, "secure",
                              &error_fatal);
@@ -211,6 +207,7 @@ static void xlnx_zcu102_machine_class_init(ObjectClass *oc, void *data)
     mc->ignore_memory_transaction_failures = true;
     mc->max_cpus = XLNX_ZYNQMP_NUM_APU_CPUS + XLNX_ZYNQMP_NUM_RPU_CPUS;
     mc->default_cpus = XLNX_ZYNQMP_NUM_APU_CPUS;
+    mc->default_ram_id = "ddr-ram";
 }
 
 static const TypeInfo xlnx_zcu102_machine_init_typeinfo = {
-- 
2.18.1

[PATCH v5 38/79] s390x/s390-virtio-ccw: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Tested-by: Halil Pasic <pasic@linux.ibm.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
---
 hw/s390x/s390-virtio-ccw.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c
index e759eb5f83..a89cf4c129 100644
--- a/hw/s390x/s390-virtio-ccw.c
+++ b/hw/s390x/s390-virtio-ccw.c
@@ -154,14 +154,12 @@ static void virtio_ccw_register_hcalls(void)
                                    virtio_ccw_hcall_early_printk);
 }
 
-static void s390_memory_init(ram_addr_t mem_size)
+static void s390_memory_init(MemoryRegion *ram)
 {
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     Error *local_err = NULL;
 
     /* allocate RAM for core */
-    memory_region_allocate_system_memory(ram, NULL, "s390.ram", mem_size);
     memory_region_add_subregion(sysmem, 0, ram);
 
     /*
@@ -245,7 +243,7 @@ static void ccw_init(MachineState *machine)
 
     s390_sclp_init();
     /* init memory + setup max page size. Required for the CPU model */
-    s390_memory_init(machine->ram_size);
+    s390_memory_init(machine->ram);
 
     /* init CPUs (incl. CPU model) early so s390_has_feature() works */
     s390_init_cpus(machine);
@@ -471,6 +469,7 @@ static void ccw_machine_class_init(ObjectClass *oc, void *data)
     hc->plug = s390_machine_device_plug;
     hc->unplug_request = s390_machine_device_unplug_request;
     nc->nmi_monitor_handler = s390_nmi;
+    mc->default_ram_id = "s390.ram";
 }
 
 static inline bool machine_get_aes_key_wrap(Object *obj, Error **errp)
-- 
2.18.1

[PATCH v5 39/79] null-machine: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/core/null-machine.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/hw/core/null-machine.c b/hw/core/null-machine.c
index 1aa0a9a01a..cb47d9d4f8 100644
--- a/hw/core/null-machine.c
+++ b/hw/core/null-machine.c
@@ -32,11 +32,8 @@ static void machine_none_init(MachineState *mch)
     }
 
     /* RAM at address zero */
-    if (mch->ram_size) {
-        MemoryRegion *ram = g_new(MemoryRegion, 1);
-
-        memory_region_allocate_system_memory(ram, NULL, "ram", mch->ram_size);
-        memory_region_add_subregion(get_system_memory(), 0, ram);
+    if (mch->ram) {
+        memory_region_add_subregion(get_system_memory(), 0, mch->ram);
     }
 
     if (mch->kernel_filename) {
@@ -52,6 +49,7 @@ static void machine_none_machine_init(MachineClass *mc)
     mc->init = machine_none_init;
     mc->max_cpus = 1;
     mc->default_ram_size = 0;
+    mc->default_ram_id = "ram";
 }
 
 DEFINE_MACHINE("none", machine_none_machine_init)
-- 
2.18.1

[PATCH v5 40/79] cris/axis_dev88: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
CC: edgar.iglesias@gmail.com
---
 hw/cris/axis_dev88.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/hw/cris/axis_dev88.c b/hw/cris/axis_dev88.c
index be7760476a..cf6790fd6f 100644
--- a/hw/cris/axis_dev88.c
+++ b/hw/cris/axis_dev88.c
@@ -249,7 +249,6 @@ static struct cris_load_info li;
 static
 void axisdev88_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     CRISCPU *cpu;
@@ -261,16 +260,12 @@ void axisdev88_init(MachineState *machine)
     struct etraxfs_dma_client *dma_eth;
     int i;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     MemoryRegion *phys_intmem = g_new(MemoryRegion, 1);
 
     /* init CPUs */
     cpu = CRIS_CPU(cpu_create(machine->cpu_type));
 
-    /* allocate RAM */
-    memory_region_allocate_system_memory(phys_ram, NULL, "axisdev88.ram",
-                                         ram_size);
-    memory_region_add_subregion(address_space_mem, 0x40000000, phys_ram);
+    memory_region_add_subregion(address_space_mem, 0x40000000, machine->ram);
 
     /* The ETRAX-FS has 128Kb on chip ram, the docs refer to it as the 
        internal memory.  */
@@ -351,6 +346,7 @@ static void axisdev88_machine_init(MachineClass *mc)
     mc->init = axisdev88_init;
     mc->is_default = 1;
     mc->default_cpu_type = CRIS_CPU_TYPE_NAME("crisv32");
+    mc->default_ram_id = "axisdev88.ram";
 }
 
 DEFINE_MACHINE("axis-dev88", axisdev88_machine_init)
-- 
2.18.1

[PATCH v5 41/79] hppa: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: rth@twiddle.net
CC: deller@gmx.de
---
 hw/hppa/machine.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
index d8755ec422..67181e75ba 100644
--- a/hw/hppa/machine.c
+++ b/hw/hppa/machine.c
@@ -71,14 +71,11 @@ static void machine_hppa_init(MachineState *machine)
     uint64_t kernel_entry = 0, kernel_low, kernel_high;
     MemoryRegion *addr_space = get_system_memory();
     MemoryRegion *rom_region;
-    MemoryRegion *ram_region;
     MemoryRegion *cpu_region;
     long i;
     unsigned int smp_cpus = machine->smp.cpus;
     SysBusDevice *s;
 
-    ram_size = machine->ram_size;
-
     /* Create CPUs.  */
     for (i = 0; i < smp_cpus; i++) {
         char *name = g_strdup_printf("cpu%ld-io-eir", i);
@@ -97,10 +94,8 @@ static void machine_hppa_init(MachineState *machine)
         error_report("RAM size is currently restricted to 3GB");
         exit(EXIT_FAILURE);
     }
-    ram_region = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(ram_region, OBJECT(machine),
-                                         "ram", ram_size);
-    memory_region_add_subregion_overlap(addr_space, 0, ram_region, -1);
+    memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1);
+
 
     /* Init Lasi chip */
     lasi_init(addr_space);
@@ -298,6 +293,7 @@ static void machine_hppa_machine_init(MachineClass *mc)
     mc->is_default = 1;
     mc->default_ram_size = 512 * MiB;
     mc->default_boot_order = "cd";
+    mc->default_ram_id = "ram";
 }
 
 DEFINE_MACHINE("hppa", machine_hppa_machine_init)
-- 
2.18.1

[PATCH v5 42/79] x86/microvm: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
CC: slp@redhat.com
CC: pbonzini@redhat.com
CC: mst@redhat.com
CC: rth@twiddle.net
CC: ehabkost@redhat.com
---
 hw/i386/microvm.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index d23485108d..38d8e51703 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -167,7 +167,7 @@ static void microvm_memory_init(MicrovmMachineState *mms)
 {
     MachineState *machine = MACHINE(mms);
     X86MachineState *x86ms = X86_MACHINE(mms);
-    MemoryRegion *ram, *ram_below_4g, *ram_above_4g;
+    MemoryRegion *ram_below_4g, *ram_above_4g;
     MemoryRegion *system_memory = get_system_memory();
     FWCfgState *fw_cfg;
     ram_addr_t lowmem;
@@ -214,12 +214,8 @@ static void microvm_memory_init(MicrovmMachineState *mms)
         x86ms->below_4g_mem_size = machine->ram_size;
     }
 
-    ram = g_malloc(sizeof(*ram));
-    memory_region_allocate_system_memory(ram, NULL, "microvm.ram",
-                                         machine->ram_size);
-
     ram_below_4g = g_malloc(sizeof(*ram_below_4g));
-    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram,
+    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram,
                              0, x86ms->below_4g_mem_size);
     memory_region_add_subregion(system_memory, 0, ram_below_4g);
 
@@ -227,7 +223,8 @@ static void microvm_memory_init(MicrovmMachineState *mms)
 
     if (x86ms->above_4g_mem_size > 0) {
         ram_above_4g = g_malloc(sizeof(*ram_above_4g));
-        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram,
+        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
+                                 machine->ram,
                                  x86ms->below_4g_mem_size,
                                  x86ms->above_4g_mem_size);
         memory_region_add_subregion(system_memory, 0x100000000ULL,
@@ -502,6 +499,7 @@ static void microvm_class_init(ObjectClass *oc, void *data)
     mc->auto_enable_numa_with_memhp = false;
     mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
     mc->nvdimm_supported = false;
+    mc->default_ram_id = "microvm.ram";
 
     /* Avoid relying too much on kernel components */
     mc->default_kernel_irqchip_split = true;
-- 
2.18.1

[PATCH v5 43/79] x86/pc: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
---
CC: mst@redhat.com
CC: pbonzini@redhat.com
CC: rth@twiddle.net
CC: ehabkost@redhat.com
---
 hw/i386/pc.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 2ddce4230a..6ab4acb0c6 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -937,7 +937,7 @@ void pc_memory_init(PCMachineState *pcms,
                     MemoryRegion **ram_memory)
 {
     int linux_boot, i;
-    MemoryRegion *ram, *option_rom_mr;
+    MemoryRegion *option_rom_mr;
     MemoryRegion *ram_below_4g, *ram_above_4g;
     FWCfgState *fw_cfg;
     MachineState *machine = MACHINE(pcms);
@@ -950,22 +950,20 @@ void pc_memory_init(PCMachineState *pcms,
 
     linux_boot = (machine->kernel_filename != NULL);
 
-    /* Allocate RAM.  We allocate it as a single memory region and use
-     * aliases to address portions of it, mostly for backwards compatibility
-     * with older qemus that used qemu_ram_alloc().
+    /*
+     * Split single memory region and use aliases to address portions of it,
+     * done for backwards compatibility with older qemus.
      */
-    ram = g_malloc(sizeof(*ram));
-    memory_region_allocate_system_memory(ram, NULL, "pc.ram",
-                                         machine->ram_size);
-    *ram_memory = ram;
+    *ram_memory = machine->ram;
     ram_below_4g = g_malloc(sizeof(*ram_below_4g));
-    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram,
+    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram,
                              0, x86ms->below_4g_mem_size);
     memory_region_add_subregion(system_memory, 0, ram_below_4g);
     e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM);
     if (x86ms->above_4g_mem_size > 0) {
         ram_above_4g = g_malloc(sizeof(*ram_above_4g));
-        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram,
+        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
+                                 machine->ram,
                                  x86ms->below_4g_mem_size,
                                  x86ms->above_4g_mem_size);
         memory_region_add_subregion(system_memory, 0x100000000ULL,
@@ -1952,6 +1950,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
     mc->nvdimm_supported = true;
     mc->numa_mem_supported = true;
+    mc->default_ram_id = "pc.ram";
 
     object_class_property_add(oc, PC_MACHINE_DEVMEM_REGION_SIZE, "int",
         pc_machine_get_device_memory_region_size, NULL,
-- 
2.18.1

[PATCH v5 44/79] lm32/lm32_boards: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: michael@walle.cc
CC: philmd@redhat.com
---
 hw/lm32/lm32_boards.c | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/hw/lm32/lm32_boards.c b/hw/lm32/lm32_boards.c
index d1894adab8..4e0a98c117 100644
--- a/hw/lm32/lm32_boards.c
+++ b/hw/lm32/lm32_boards.c
@@ -19,6 +19,7 @@
 
 #include "qemu/osdep.h"
 #include "qemu/units.h"
+#include "qemu/cutils.h"
 #include "qemu/error-report.h"
 #include "cpu.h"
 #include "hw/sysbus.h"
@@ -75,22 +76,28 @@ static void main_cpu_reset(void *opaque)
 
 static void lm32_evr_init(MachineState *machine)
 {
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     const char *kernel_filename = machine->kernel_filename;
     LM32CPU *cpu;
     CPULM32State *env;
     DriveInfo *dinfo;
     MemoryRegion *address_space_mem =  get_system_memory();
-    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     qemu_irq irq[32];
     ResetInfo *reset_info;
     int i;
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     /* memory map */
     hwaddr flash_base  = 0x04000000;
     size_t flash_sector_size       = 256 * KiB;
     size_t flash_size              = 32 * MiB;
     hwaddr ram_base    = 0x08000000;
-    size_t ram_size                = 64 * MiB;
     hwaddr timer0_base = 0x80002000;
     hwaddr uart0_base  = 0x80006000;
     hwaddr timer1_base = 0x8000a000;
@@ -107,9 +114,7 @@ static void lm32_evr_init(MachineState *machine)
 
     reset_info->flash_base = flash_base;
 
-    memory_region_allocate_system_memory(phys_ram, NULL, "lm32_evr.sdram",
-                                         ram_size);
-    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
+    memory_region_add_subregion(address_space_mem, ram_base, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     /* Spansion S29NS128P */
@@ -144,7 +149,7 @@ static void lm32_evr_init(MachineState *machine)
 
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(kernel_filename, ram_base,
-                                              ram_size);
+                                              machine->ram_size);
             reset_info->bootstrap_pc = ram_base;
         }
 
@@ -159,6 +164,7 @@ static void lm32_evr_init(MachineState *machine)
 
 static void lm32_uclinux_init(MachineState *machine)
 {
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
@@ -166,18 +172,23 @@ static void lm32_uclinux_init(MachineState *machine)
     CPULM32State *env;
     DriveInfo *dinfo;
     MemoryRegion *address_space_mem =  get_system_memory();
-    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     qemu_irq irq[32];
     HWSetup *hw;
     ResetInfo *reset_info;
     int i;
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     /* memory map */
     hwaddr flash_base   = 0x04000000;
     size_t flash_sector_size        = 256 * KiB;
     size_t flash_size               = 32 * MiB;
     hwaddr ram_base     = 0x08000000;
-    size_t ram_size                 = 64 * MiB;
     hwaddr uart0_base   = 0x80000000;
     hwaddr timer0_base  = 0x80002000;
     hwaddr timer1_base  = 0x80010000;
@@ -200,9 +211,7 @@ static void lm32_uclinux_init(MachineState *machine)
 
     reset_info->flash_base = flash_base;
 
-    memory_region_allocate_system_memory(phys_ram, NULL,
-                                         "lm32_uclinux.sdram", ram_size);
-    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
+    memory_region_add_subregion(address_space_mem, ram_base, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     /* Spansion S29NS128P */
@@ -238,7 +247,7 @@ static void lm32_uclinux_init(MachineState *machine)
 
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(kernel_filename, ram_base,
-                                              ram_size);
+                                              machine->ram_size);
             reset_info->bootstrap_pc = ram_base;
         }
 
@@ -252,7 +261,7 @@ static void lm32_uclinux_init(MachineState *machine)
     hw = hwsetup_init();
     hwsetup_add_cpu(hw, "LM32", 75000000);
     hwsetup_add_flash(hw, "flash", flash_base, flash_size);
-    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
+    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, machine->ram_size);
     hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
     hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
     hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
@@ -288,6 +297,8 @@ static void lm32_evr_class_init(ObjectClass *oc, void *data)
     mc->init = lm32_evr_init;
     mc->is_default = 1;
     mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
+    mc->default_ram_size = 64 * MiB;
+    mc->default_ram_id = "lm32_evr.sdram";
 }
 
 static const TypeInfo lm32_evr_type = {
@@ -304,6 +315,8 @@ static void lm32_uclinux_class_init(ObjectClass *oc, void *data)
     mc->init = lm32_uclinux_init;
     mc->is_default = 0;
     mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
+    mc->default_ram_size = 64 * MiB;
+    mc->default_ram_id = "lm32_uclinux.sdram";
 }
 
 static const TypeInfo lm32_uclinux_type = {
-- 
2.18.1

[PATCH v5 45/79] lm32/milkymist: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
 while at it add check for user supplied RAM size and error
 out if it mismatches board expected value.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
v3:
  * use size_to_str() to pretty print size in MiB
    (Philippe Mathieu-Daudé <philmd@redhat.com>)

CC: michael@walle.cc
---
 hw/lm32/milkymist.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/hw/lm32/milkymist.c b/hw/lm32/milkymist.c
index 6d46134232..5c72266e58 100644
--- a/hw/lm32/milkymist.c
+++ b/hw/lm32/milkymist.c
@@ -36,6 +36,7 @@
 #include "hw/display/milkymist_tmu2.h"
 #include "lm32.h"
 #include "exec/address-spaces.h"
+#include "qemu/cutils.h"
 
 #define BIOS_FILENAME    "mmone-bios.bin"
 #define BIOS_OFFSET      0x00860000
@@ -82,6 +83,7 @@ static void main_cpu_reset(void *opaque)
 static void
 milkymist_init(MachineState *machine)
 {
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
@@ -90,22 +92,27 @@ milkymist_init(MachineState *machine)
     int kernel_size;
     DriveInfo *dinfo;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *phys_sdram = g_new(MemoryRegion, 1);
     qemu_irq irq[32];
     int i;
     char *bios_filename;
     ResetInfo *reset_info;
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     /* memory map */
     hwaddr flash_base   = 0x00000000;
     size_t flash_sector_size        = 128 * KiB;
     size_t flash_size               = 32 * MiB;
     hwaddr sdram_base   = 0x40000000;
-    size_t sdram_size               = 128 * MiB;
 
     hwaddr initrd_base  = sdram_base + 0x1002000;
     hwaddr cmdline_base = sdram_base + 0x1000000;
-    size_t initrd_max = sdram_size - 0x1002000;
+    size_t initrd_max = machine->ram_size - 0x1002000;
 
     reset_info = g_malloc0(sizeof(ResetInfo));
 
@@ -116,9 +123,7 @@ milkymist_init(MachineState *machine)
 
     cpu_lm32_set_phys_msb_ignore(env, 1);
 
-    memory_region_allocate_system_memory(phys_sdram, NULL, "milkymist.sdram",
-                                         sdram_size);
-    memory_region_add_subregion(address_space_mem, sdram_base, phys_sdram);
+    memory_region_add_subregion(address_space_mem, sdram_base, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     /* Numonyx JS28F256J3F105 */
@@ -183,7 +188,7 @@ milkymist_init(MachineState *machine)
 
         if (kernel_size < 0) {
             kernel_size = load_image_targphys(kernel_filename, sdram_base,
-                                              sdram_size);
+                                              machine->ram_size);
             reset_info->bootstrap_pc = sdram_base;
         }
 
@@ -216,6 +221,8 @@ static void milkymist_machine_init(MachineClass *mc)
     mc->init = milkymist_init;
     mc->is_default = 0;
     mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
+    mc->default_ram_size = 128 * MiB;
+    mc->default_ram_id = "milkymist.sdram";
 }
 
 DEFINE_MACHINE("milkymist", milkymist_machine_init)
-- 
2.18.1

[PATCH v5 46/79] m68k/an5206: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
---
 hw/m68k/an5206.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/m68k/an5206.c b/hw/m68k/an5206.c
index bed43a936d..846f4e40c6 100644
--- a/hw/m68k/an5206.c
+++ b/hw/m68k/an5206.c
@@ -33,7 +33,6 @@ static void an5206_init(MachineState *machine)
     uint64_t elf_entry;
     hwaddr entry;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
     cpu = M68K_CPU(cpu_create(machine->cpu_type));
@@ -46,8 +45,7 @@ static void an5206_init(MachineState *machine)
     env->rambar0 = AN5206_RAMBAR_ADDR | 1;
 
     /* DRAM at address zero */
-    memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size);
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     /* Internal SRAM.  */
     memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
@@ -89,6 +87,7 @@ static void an5206_machine_init(MachineClass *mc)
     mc->desc = "Arnewsh 5206";
     mc->init = an5206_init;
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206");
+    mc->default_ram_id = "an5206.ram";
 }
 
 DEFINE_MACHINE("an5206", an5206_machine_init)
-- 
2.18.1

[PATCH v5 47/79] m68k/q800: use memdev for RAM

[Igor Mammedov]

Switch to using generic main RAM allocation. To do this set
MachineClass::default_ram_id to m68k_mac.ram and use
MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Laurent Vivier <laurent@vivier.eu>
---
 hw/m68k/q800.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
index 1e32363688..a4c4bc14cb 100644
--- a/hw/m68k/q800.c
+++ b/hw/m68k/q800.c
@@ -160,7 +160,6 @@ static void q800_init(MachineState *machine)
     ram_addr_t initrd_base;
     int32_t initrd_size;
     MemoryRegion *rom;
-    MemoryRegion *ram;
     MemoryRegion *io;
     const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1;
     int i;
@@ -194,9 +193,7 @@ static void q800_init(MachineState *machine)
     qemu_register_reset(main_cpu_reset, cpu);
 
     /* RAM */
-    ram = g_malloc(sizeof(*ram));
-    memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, &error_abort);
-    memory_region_add_subregion(get_system_memory(), 0, ram);
+    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /*
      * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated
@@ -443,6 +440,7 @@ static void q800_machine_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = 1;
     mc->is_default = 0;
     mc->block_default_type = IF_SCSI;
+    mc->default_ram_id = "m68k_mac.ram";
 }
 
 static const TypeInfo q800_machine_typeinfo = {
-- 
2.18.1

[PATCH v5 48/79] m68k/mcf5208: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
---
 hw/m68k/mcf5208.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c
index a999c21982..31622c71cb 100644
--- a/hw/m68k/mcf5208.c
+++ b/hw/m68k/mcf5208.c
@@ -234,7 +234,6 @@ static void mcf5208evb_init(MachineState *machine)
     qemu_irq *pic;
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *rom = g_new(MemoryRegion, 1);
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *sram = g_new(MemoryRegion, 1);
 
     cpu = M68K_CPU(cpu_create(machine->cpu_type));
@@ -249,8 +248,7 @@ static void mcf5208evb_init(MachineState *machine)
     memory_region_add_subregion(address_space_mem, 0x00000000, rom);
 
     /* DRAM at 0x40000000 */
-    memory_region_allocate_system_memory(ram, NULL, "mcf5208.ram", ram_size);
-    memory_region_add_subregion(address_space_mem, 0x40000000, ram);
+    memory_region_add_subregion(address_space_mem, 0x40000000, machine->ram);
 
     /* Internal SRAM.  */
     memory_region_init_ram(sram, NULL, "mcf5208.sram", 16 * KiB, &error_fatal);
@@ -354,6 +352,7 @@ static void mcf5208evb_machine_init(MachineClass *mc)
     mc->init = mcf5208evb_init;
     mc->is_default = 1;
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5208");
+    mc->default_ram_id = "mcf5208.ram";
 }
 
 DEFINE_MACHINE("mcf5208evb", mcf5208evb_machine_init)
-- 
2.18.1

[PATCH v5 49/79] m68k/next-cube: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
---
 hw/m68k/next-cube.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c
index e5343348d0..cd93d9e367 100644
--- a/hw/m68k/next-cube.c
+++ b/hw/m68k/next-cube.c
@@ -860,7 +860,6 @@ static void next_cube_init(MachineState *machine)
 {
     M68kCPU *cpu;
     CPUM68KState *env;
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *rom = g_new(MemoryRegion, 1);
     MemoryRegion *mmiomem = g_new(MemoryRegion, 1);
     MemoryRegion *scrmem = g_new(MemoryRegion, 1);
@@ -893,8 +892,7 @@ static void next_cube_init(MachineState *machine)
     memcpy(ns->rtc.ram, rtc_ram2, 32);
 
     /* 64MB RAM starting at 0x04000000  */
-    memory_region_allocate_system_memory(ram, NULL, "next.ram", ram_size);
-    memory_region_add_subregion(sysmem, 0x04000000, ram);
+    memory_region_add_subregion(sysmem, 0x04000000, machine->ram);
 
     /* Framebuffer */
     dev = qdev_create(NULL, TYPE_NEXTFB);
@@ -967,6 +965,7 @@ static void next_machine_class_init(ObjectClass *oc, void *data)
     mc->desc = "NeXT Cube";
     mc->init = next_cube_init;
     mc->default_ram_size = RAM_SIZE;
+    mc->default_ram_id = "next.ram";
     mc->default_cpu_type = M68K_CPU_TYPE_NAME("m68040");
 }
 
-- 
2.18.1

[PATCH v5 50/79] mips/boston: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/mips/boston.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/hw/mips/boston.c b/hw/mips/boston.c
index 0df3a7755a..98ecd25e8e 100644
--- a/hw/mips/boston.c
+++ b/hw/mips/boston.c
@@ -427,7 +427,7 @@ static void boston_mach_init(MachineState *machine)
     DeviceState *dev;
     BostonState *s;
     Error *err = NULL;
-    MemoryRegion *flash, *ddr, *ddr_low_alias, *lcd, *platreg;
+    MemoryRegion *flash, *ddr_low_alias, *lcd, *platreg;
     MemoryRegion *sys_mem = get_system_memory();
     XilinxPCIEHost *pcie2;
     PCIDevice *ahci;
@@ -473,14 +473,12 @@ static void boston_mach_init(MachineState *machine)
     memory_region_init_rom(flash, NULL, "boston.flash", 128 * MiB, &err);
     memory_region_add_subregion_overlap(sys_mem, 0x18000000, flash, 0);
 
-    ddr = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(ddr, NULL, "boston.ddr",
-                                         machine->ram_size);
-    memory_region_add_subregion_overlap(sys_mem, 0x80000000, ddr, 0);
+    memory_region_add_subregion_overlap(sys_mem, 0x80000000, machine->ram, 0);
 
     ddr_low_alias = g_new(MemoryRegion, 1);
     memory_region_init_alias(ddr_low_alias, NULL, "boston_low.ddr",
-                             ddr, 0, MIN(machine->ram_size, (256 * MiB)));
+                             machine->ram, 0,
+                             MIN(machine->ram_size, (256 * MiB)));
     memory_region_add_subregion_overlap(sys_mem, 0, ddr_low_alias, 0);
 
     xilinx_pcie_init(sys_mem, 0,
@@ -552,6 +550,7 @@ static void boston_mach_class_init(MachineClass *mc)
     mc->init = boston_mach_init;
     mc->block_default_type = IF_IDE;
     mc->default_ram_size = 1 * GiB;
+    mc->default_ram_id = "boston.ddr";
     mc->max_cpus = 16;
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("I6400");
 }
-- 
2.18.1

[PATCH v5 51/79] mips/mips_fulong2e: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported.
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v2:
 * fix format string cousing build failure on 32-bit host
   (Philippe Mathieu-Daudé <philmd@redhat.com>)
v3:
 * since size is ifxed, just hardcode 256Mb value as text
   in error message
   (BALATON Zoltan <balaton@eik.bme.hu>)

CC: philmd@redhat.com
CC: amarkovic@wavecomp.com
CC: aurelien@aurel32.net
CC: aleksandar.rikalo@rt-rk.com
CC: balaton@eik.bme.hu
---
 hw/mips/mips_fulong2e.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
index 2e043cbb98..cf00211bd2 100644
--- a/hw/mips/mips_fulong2e.c
+++ b/hw/mips/mips_fulong2e.c
@@ -296,7 +296,6 @@ static void mips_fulong2e_init(MachineState *machine)
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios = g_new(MemoryRegion, 1);
-    ram_addr_t ram_size = machine->ram_size;
     long bios_size;
     uint8_t *spd_data;
     Error *err = NULL;
@@ -315,10 +314,14 @@ static void mips_fulong2e_init(MachineState *machine)
     qemu_register_reset(main_cpu_reset, cpu);
 
     /* TODO: support more than 256M RAM as highmem */
-    ram_size = 256 * MiB;
+    if (machine->ram_size != 256 * MiB) {
+        error_report("Invalid RAM size, should be 256MB");
+        exit(EXIT_FAILURE);
+    }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram", ram_size);
+    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram",
+                                         machine->ram_size);
     memory_region_init_ram(bios, NULL, "fulong2e.bios", BIOS_SIZE,
                            &error_fatal);
     memory_region_set_readonly(bios, true);
@@ -332,7 +335,7 @@ static void mips_fulong2e_init(MachineState *machine)
      */
 
     if (kernel_filename) {
-        loaderparams.ram_size = ram_size;
+        loaderparams.ram_size = machine->ram_size;
         loaderparams.kernel_filename = kernel_filename;
         loaderparams.kernel_cmdline = kernel_cmdline;
         loaderparams.initrd_filename = initrd_filename;
@@ -378,7 +381,7 @@ static void mips_fulong2e_init(MachineState *machine)
     }
 
     /* Populate SPD eeprom data */
-    spd_data = spd_data_generate(DDR, ram_size, &err);
+    spd_data = spd_data_generate(DDR, machine->ram_size, &err);
     if (err) {
         warn_report_err(err);
     }
-- 
2.18.1

[PATCH v5 52/79] mips/mips_fulong2e: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: philmd@redhat.com
CC: amarkovic@wavecomp.com
CC: aurelien@aurel32.net
CC: aleksandar.rikalo@rt-rk.com
---
 hw/mips/mips_fulong2e.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
index cf00211bd2..c373ab066b 100644
--- a/hw/mips/mips_fulong2e.c
+++ b/hw/mips/mips_fulong2e.c
@@ -294,7 +294,6 @@ static void mips_fulong2e_init(MachineState *machine)
     const char *initrd_filename = machine->initrd_filename;
     char *filename;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios = g_new(MemoryRegion, 1);
     long bios_size;
     uint8_t *spd_data;
@@ -320,13 +319,11 @@ static void mips_fulong2e_init(MachineState *machine)
     }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram",
-                                         machine->ram_size);
     memory_region_init_ram(bios, NULL, "fulong2e.bios", BIOS_SIZE,
                            &error_fatal);
     memory_region_set_readonly(bios, true);
 
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
     memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios);
 
     /*
@@ -402,6 +399,7 @@ static void mips_fulong2e_machine_init(MachineClass *mc)
     mc->block_default_type = IF_IDE;
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("Loongson-2E");
     mc->default_ram_size = 256 * MiB;
+    mc->default_ram_id = "fulong2e.ram";
 }
 
 DEFINE_MACHINE("fulong2e", mips_fulong2e_machine_init)
-- 
2.18.1

[PATCH v5 53/79] mips/mips_jazz: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/mips/mips_jazz.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 66fd4d867d..85d49cf155 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -159,7 +159,6 @@ static void mips_jazz_init(MachineState *machine,
     ISABus *isa_bus;
     ISADevice *pit;
     DriveInfo *fds[MAX_FD];
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios = g_new(MemoryRegion, 1);
     MemoryRegion *bios2 = g_new(MemoryRegion, 1);
     SysBusESPState *sysbus_esp;
@@ -191,9 +190,7 @@ static void mips_jazz_init(MachineState *machine,
     cc->do_transaction_failed = mips_jazz_do_transaction_failed;
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "mips_jazz.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(address_space, 0, ram);
+    memory_region_add_subregion(address_space, 0, machine->ram);
 
     memory_region_init_ram(bios, NULL, "mips_jazz.bios", MAGNUM_BIOS_SIZE,
                            &error_fatal);
@@ -393,6 +390,7 @@ static void mips_magnum_class_init(ObjectClass *oc, void *data)
     mc->init = mips_magnum_init;
     mc->block_default_type = IF_SCSI;
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
+    mc->default_ram_id = "mips_jazz.ram";
 }
 
 static const TypeInfo mips_magnum_type = {
@@ -409,6 +407,7 @@ static void mips_pica61_class_init(ObjectClass *oc, void *data)
     mc->init = mips_pica61_init;
     mc->block_default_type = IF_SCSI;
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("R4000");
+    mc->default_ram_id = "mips_jazz.ram";
 }
 
 static const TypeInfo mips_pica61_type = {
-- 
2.18.1

[PATCH v5 54/79] mips/mips_jazz: add max ram size check

[Igor Mammedov]

error out in case user asked for more RAM than board
supports.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daude <philmd@redhat.com>
---
 hw/mips/mips_jazz.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 85d49cf155..32fbd10b4e 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -164,6 +164,11 @@ static void mips_jazz_init(MachineState *machine,
     SysBusESPState *sysbus_esp;
     ESPState *esp;
 
+    if (machine->ram_size > 256 * MiB) {
+        error_report("RAM size more than 256Mb is not supported");
+        exit(EXIT_FAILURE);
+    }
+
     /* init CPUs */
     cpu = MIPS_CPU(cpu_create(machine->cpu_type));
     env = &cpu->env;
-- 
2.18.1

[PATCH v5 55/79] mips/mips_malta: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/mips/mips_malta.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 34b76bb6a1..6e7ba9235d 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -1224,7 +1224,6 @@ void mips_malta_init(MachineState *machine)
     char *filename;
     PFlashCFI01 *fl;
     MemoryRegion *system_memory = get_system_memory();
-    MemoryRegion *ram_high = g_new(MemoryRegion, 1);
     MemoryRegion *ram_low_preio = g_new(MemoryRegion, 1);
     MemoryRegion *ram_low_postio;
     MemoryRegion *bios, *bios_copy = g_new(MemoryRegion, 1);
@@ -1262,13 +1261,11 @@ void mips_malta_init(MachineState *machine)
     }
 
     /* register RAM at high address where it is undisturbed by IO */
-    memory_region_allocate_system_memory(ram_high, NULL, "mips_malta.ram",
-                                         ram_size);
-    memory_region_add_subregion(system_memory, 0x80000000, ram_high);
+    memory_region_add_subregion(system_memory, 0x80000000, machine->ram);
 
     /* alias for pre IO hole access */
     memory_region_init_alias(ram_low_preio, NULL, "mips_malta_low_preio.ram",
-                             ram_high, 0, MIN(ram_size, 256 * MiB));
+                             machine->ram, 0, MIN(ram_size, 256 * MiB));
     memory_region_add_subregion(system_memory, 0, ram_low_preio);
 
     /* alias for post IO hole access, if there is enough RAM */
@@ -1276,7 +1273,7 @@ void mips_malta_init(MachineState *machine)
         ram_low_postio = g_new(MemoryRegion, 1);
         memory_region_init_alias(ram_low_postio, NULL,
                                  "mips_malta_low_postio.ram",
-                                 ram_high, 512 * MiB,
+                                 machine->ram, 512 * MiB,
                                  ram_size - 512 * MiB);
         memory_region_add_subregion(system_memory, 512 * MiB,
                                     ram_low_postio);
@@ -1448,6 +1445,7 @@ static void mips_malta_machine_init(MachineClass *mc)
 #else
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
 #endif
+    mc->default_ram_id = "mips_malta.ram";
 }
 
 DEFINE_MACHINE("malta", mips_malta_machine_init)
-- 
2.18.1

[PATCH v5 56/79] mips/mips_mipssim: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/mips/mips_mipssim.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/hw/mips/mips_mipssim.c b/hw/mips/mips_mipssim.c
index b934ca9d51..b2555ddb89 100644
--- a/hw/mips/mips_mipssim.c
+++ b/hw/mips/mips_mipssim.c
@@ -143,14 +143,12 @@ static void mipsnet_init(int base, qemu_irq irq, NICInfo *nd)
 static void
 mips_mipssim_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
     char *filename;
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *isa = g_new(MemoryRegion, 1);
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios = g_new(MemoryRegion, 1);
     MIPSCPU *cpu;
     CPUMIPSState *env;
@@ -167,13 +165,11 @@ mips_mipssim_init(MachineState *machine)
     qemu_register_reset(main_cpu_reset, reset_info);
 
     /* Allocate RAM. */
-    memory_region_allocate_system_memory(ram, NULL, "mips_mipssim.ram",
-                                         ram_size);
     memory_region_init_ram(bios, NULL, "mips_mipssim.bios", BIOS_SIZE,
                            &error_fatal);
     memory_region_set_readonly(bios, true);
 
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     /* Map the BIOS / boot exception handler. */
     memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios);
@@ -200,7 +196,7 @@ mips_mipssim_init(MachineState *machine)
     }
 
     if (kernel_filename) {
-        loaderparams.ram_size = ram_size;
+        loaderparams.ram_size = machine->ram_size;
         loaderparams.kernel_filename = kernel_filename;
         loaderparams.kernel_cmdline = kernel_cmdline;
         loaderparams.initrd_filename = initrd_filename;
@@ -245,6 +241,7 @@ static void mips_mipssim_machine_init(MachineClass *mc)
 #else
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
 #endif
+    mc->default_ram_id = "mips_mipssim.ram";
 }
 
 DEFINE_MACHINE("mipssim", mips_mipssim_machine_init)
-- 
2.18.1

[PATCH v5 57/79] mips/mips_r4k: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/mips/mips_r4k.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/hw/mips/mips_r4k.c b/hw/mips/mips_r4k.c
index b2aec434c3..258cd91578 100644
--- a/hw/mips/mips_r4k.c
+++ b/hw/mips/mips_r4k.c
@@ -171,13 +171,11 @@ static const int sector_len = 32 * KiB;
 static
 void mips_r4k_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
     char *filename;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios;
     MemoryRegion *iomem = g_new(MemoryRegion, 1);
     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
@@ -203,14 +201,12 @@ void mips_r4k_init(MachineState *machine)
     qemu_register_reset(main_cpu_reset, reset_info);
 
     /* allocate RAM */
-    if (ram_size > 256 * MiB) {
+    if (machine->ram_size > 256 * MiB) {
         error_report("Too much memory for this machine: %" PRId64 "MB,"
                      " maximum 256MB", ram_size / MiB);
         exit(1);
     }
-    memory_region_allocate_system_memory(ram, NULL, "mips_r4k.ram", ram_size);
-
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     memory_region_init_io(iomem, NULL, &mips_qemu_ops,
                           NULL, "mips-qemu", 0x10000);
@@ -261,7 +257,7 @@ void mips_r4k_init(MachineState *machine)
     g_free(filename);
 
     if (kernel_filename) {
-        loaderparams.ram_size = ram_size;
+        loaderparams.ram_size = machine->ram_size;
         loaderparams.kernel_filename = kernel_filename;
         loaderparams.kernel_cmdline = kernel_cmdline;
         loaderparams.initrd_filename = initrd_filename;
@@ -316,7 +312,7 @@ static void mips_machine_init(MachineClass *mc)
 #else
     mc->default_cpu_type = MIPS_CPU_TYPE_NAME("24Kf");
 #endif
-
+    mc->default_ram_id = "mips_r4k.ram";
 }
 
 DEFINE_MACHINE("mips", mips_machine_init)
-- 
2.18.1

[PATCH v5 58/79] ppc/e500: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported.
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

While at it, replace usage of global ram_size with
machine->ram_size

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v2:
 * fix format string cousing build failure on 32-bit host
   (Philippe Mathieu-Daudé <philmd@redhat.com>)
---
 hw/ppc/e500.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 886442e54f..960024b611 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -906,12 +906,14 @@ void ppce500_init(MachineState *machine)
 
     env = firstenv;
 
-    /* Fixup Memory size on a alignment boundary */
-    ram_size &= ~(RAM_SIZES_ALIGN - 1);
-    machine->ram_size = ram_size;
+    if (!QEMU_IS_ALIGNED(machine->ram_size, RAM_SIZES_ALIGN)) {
+        error_report("RAM size must be multiple of %" PRIu64, RAM_SIZES_ALIGN);
+        exit(EXIT_FAILURE);
+    }
 
     /* Register Memory */
-    memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram", ram_size);
+    memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram",
+                                         machine->ram_size);
     memory_region_add_subregion(address_space_mem, 0, ram);
 
     dev = qdev_create(NULL, "e500-ccsr");
@@ -1083,7 +1085,7 @@ void ppce500_init(MachineState *machine)
         kernel_base = cur_base;
         kernel_size = load_image_targphys(machine->kernel_filename,
                                           cur_base,
-                                          ram_size - cur_base);
+                                          machine->ram_size - cur_base);
         if (kernel_size < 0) {
             error_report("could not load kernel '%s'",
                          machine->kernel_filename);
@@ -1097,7 +1099,7 @@ void ppce500_init(MachineState *machine)
     if (machine->initrd_filename) {
         initrd_base = (cur_base + INITRD_LOAD_PAD) & ~INITRD_PAD_MASK;
         initrd_size = load_image_targphys(machine->initrd_filename, initrd_base,
-                                          ram_size - initrd_base);
+                                          machine->ram_size - initrd_base);
 
         if (initrd_size < 0) {
             error_report("could not load initial ram disk '%s'",
@@ -1115,7 +1117,7 @@ void ppce500_init(MachineState *machine)
      * ensures enough space between kernel and initrd.
      */
     dt_base = (loadaddr + payload_size + DTC_LOAD_PAD) & ~DTC_PAD_MASK;
-    if (dt_base + DTB_MAX_SIZE > ram_size) {
+    if (dt_base + DTB_MAX_SIZE > machine->ram_size) {
             error_report("not enough memory for device tree");
             exit(1);
     }
-- 
2.18.1

[PATCH v5 59/79] ppc/e500: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/e500.c      | 5 +----
 hw/ppc/e500plat.c  | 1 +
 hw/ppc/mpc8544ds.c | 1 +
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/e500.c b/hw/ppc/e500.c
index 960024b611..d5dfe9fb84 100644
--- a/hw/ppc/e500.c
+++ b/hw/ppc/e500.c
@@ -831,7 +831,6 @@ static void ppce500_power_off(void *opaque, int line, int on)
 void ppce500_init(MachineState *machine)
 {
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     PPCE500MachineState *pms = PPCE500_MACHINE(machine);
     const PPCE500MachineClass *pmc = PPCE500_MACHINE_GET_CLASS(machine);
     PCIBus *pci_bus;
@@ -912,9 +911,7 @@ void ppce500_init(MachineState *machine)
     }
 
     /* Register Memory */
-    memory_region_allocate_system_memory(ram, NULL, "mpc8544ds.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(address_space_mem, 0, ram);
+    memory_region_add_subregion(address_space_mem, 0, machine->ram);
 
     dev = qdev_create(NULL, "e500-ccsr");
     object_property_add_child(qdev_get_machine(), "e500-ccsr",
diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
index 7078386300..bddd5e7c48 100644
--- a/hw/ppc/e500plat.c
+++ b/hw/ppc/e500plat.c
@@ -97,6 +97,7 @@ static void e500plat_machine_class_init(ObjectClass *oc, void *data)
     mc->init = e500plat_init;
     mc->max_cpus = 32;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
+    mc->default_ram_id = "mpc8544ds.ram";
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_ETSEC_COMMON);
  }
 
diff --git a/hw/ppc/mpc8544ds.c b/hw/ppc/mpc8544ds.c
index c2c5e11fa1..81177505f0 100644
--- a/hw/ppc/mpc8544ds.c
+++ b/hw/ppc/mpc8544ds.c
@@ -55,6 +55,7 @@ static void e500plat_machine_class_init(ObjectClass *oc, void *data)
     mc->init = mpc8544ds_init;
     mc->max_cpus = 15;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
+    mc->default_ram_id = "mpc8544ds.ram";
 }
 
 #define TYPE_MPC8544DS_MACHINE  MACHINE_TYPE_NAME("mpc8544ds")
-- 
2.18.1

[PATCH v5 60/79] ppc/mac_newworld: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/ppc/mac_newworld.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
index 464d012103..b8189bf7a4 100644
--- a/hw/ppc/mac_newworld.c
+++ b/hw/ppc/mac_newworld.c
@@ -118,7 +118,7 @@ static void ppc_core99_init(MachineState *machine)
     char *filename;
     IrqLines *openpic_irqs;
     int linux_boot, i, j, k;
-    MemoryRegion *ram = g_new(MemoryRegion, 1), *bios = g_new(MemoryRegion, 1);
+    MemoryRegion *bios = g_new(MemoryRegion, 1);
     hwaddr kernel_base, initrd_base, cmdline_base = 0;
     long kernel_size, initrd_size;
     UNINHostState *uninorth_pci;
@@ -152,8 +152,7 @@ static void ppc_core99_init(MachineState *machine)
     }
 
     /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_core99.ram", ram_size);
-    memory_region_add_subregion(get_system_memory(), 0, ram);
+    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /* allocate and load BIOS */
     memory_region_init_ram(bios, NULL, "ppc_core99.bios", BIOS_SIZE,
@@ -586,6 +585,7 @@ static void core99_machine_class_init(ObjectClass *oc, void *data)
 #else
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("7400_v2.9");
 #endif
+    mc->default_ram_id = "ppc_core99.ram";
     mc->ignore_boot_device_suffixes = true;
     fwc->get_dev_path = core99_fw_dev_path;
 }
-- 
2.18.1

[PATCH v5 61/79] ppc/mac_oldworld: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/ppc/mac_oldworld.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
index 7318d7e9b4..66e434bba3 100644
--- a/hw/ppc/mac_oldworld.c
+++ b/hw/ppc/mac_oldworld.c
@@ -91,7 +91,6 @@ static void ppc_heathrow_init(MachineState *machine)
     CPUPPCState *env = NULL;
     char *filename;
     int linux_boot, i;
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *bios = g_new(MemoryRegion, 1);
     uint32_t kernel_base, initrd_base, cmdline_base = 0;
     int32_t kernel_size, initrd_size;
@@ -127,9 +126,7 @@ static void ppc_heathrow_init(MachineState *machine)
         exit(1);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "ppc_heathrow.ram",
-                                         ram_size);
-    memory_region_add_subregion(sysmem, 0, ram);
+    memory_region_add_subregion(sysmem, 0, machine->ram);
 
     /* allocate and load BIOS */
     memory_region_init_ram(bios, NULL, "ppc_heathrow.bios", BIOS_SIZE,
@@ -446,6 +443,7 @@ static void heathrow_class_init(ObjectClass *oc, void *data)
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("750_v3.1");
     mc->default_display = "std";
     mc->ignore_boot_device_suffixes = true;
+    mc->default_ram_id = "ppc_heathrow.ram";
     fwc->get_dev_path = heathrow_fw_dev_path;
 }
 
-- 
2.18.1

[PATCH v5 62/79] ppc/pnv: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/pnv.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 139c857b1e..ea20a1dc3e 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -690,7 +690,6 @@ static void pnv_init(MachineState *machine)
 {
     PnvMachineState *pnv = PNV_MACHINE(machine);
     MachineClass *mc = MACHINE_GET_CLASS(machine);
-    MemoryRegion *ram;
     char *fw_filename;
     long fw_size;
     int i;
@@ -702,11 +701,7 @@ static void pnv_init(MachineState *machine)
     if (machine->ram_size < (1 * GiB)) {
         warn_report("skiboot may not work with < 1GB of RAM");
     }
-
-    ram = g_new(MemoryRegion, 1);
-    memory_region_allocate_system_memory(ram, NULL, "pnv.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(get_system_memory(), 0, ram);
+    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
 
     /*
      * Create our simple PNOR device
@@ -1976,6 +1971,7 @@ static void pnv_machine_class_init(ObjectClass *oc, void *data)
      * enough to fit the maximum initrd size at it's load address
      */
     mc->default_ram_size = INITRD_LOAD_ADDR + INITRD_MAX_SIZE;
+    mc->default_ram_id = "pnv.ram";
     ispc->print_info = pnv_pic_print_info;
 
     object_class_property_add_bool(oc, "hb-mode",
-- 
2.18.1

[PATCH v5 63/79] ppc/ppc405_boards: add RAM size checks

[Igor Mammedov]

If user provided non-sense RAM size, board will ignore it
and continue running with fixed RAM size.

Also RAM is going to be allocated by generic code, so it
won't be possible for board to fix CLI.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

PS:
move fixed RAM size into mc->default_ram_size, so that
generic code will know how much to allocate.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v2:
  * fix format string causing build failure on 32-bit host
    (Philippe Mathieu-Daudé <philmd@redhat.com>)
v3:
  * use size_to_str() to pretty print size in MiB
    (Philippe Mathieu-Daudé <philmd@redhat.com>/
     BALATON Zoltan <balaton@eik.bme.hu>)
---
 hw/ppc/ppc405_boards.c | 39 ++++++++++++++++++++++++++-------------
 1 file changed, 26 insertions(+), 13 deletions(-)

diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 1f721feed6..057882a5d2 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -40,6 +40,7 @@
 #include "qemu/error-report.h"
 #include "hw/loader.h"
 #include "exec/address-spaces.h"
+#include "qemu/cutils.h"
 
 #define BIOS_FILENAME "ppc405_rom.bin"
 #define BIOS_SIZE (2 * MiB)
@@ -137,7 +138,7 @@ static void ref405ep_fpga_init(MemoryRegion *sysmem, uint32_t base)
 
 static void ref405ep_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
@@ -161,15 +162,21 @@ static void ref405ep_init(MachineState *machine)
     DriveInfo *dinfo;
     MemoryRegion *sysmem = get_system_memory();
 
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
+
     /* XXX: fix this */
     memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
-                                         0x08000000);
+                                         machine->ram_size);
     ram_bases[0] = 0;
-    ram_sizes[0] = 0x08000000;
+    ram_sizes[0] = machine->ram_size;
     memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
     ram_bases[1] = 0x00000000;
     ram_sizes[1] = 0x00000000;
-    ram_size = 128 * MiB;
     env = ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
                         33333333, &pic, kernel_filename == NULL ? 0 : 1);
     /* allocate SRAM */
@@ -227,7 +234,7 @@ static void ref405ep_init(MachineState *machine)
     if (linux_boot) {
         memset(&bd, 0, sizeof(bd));
         bd.bi_memstart = 0x00000000;
-        bd.bi_memsize = ram_size;
+        bd.bi_memsize = machine->ram_size;
         bd.bi_flashstart = -bios_size;
         bd.bi_flashsize = -bios_size;
         bd.bi_flashoffset = 0;
@@ -255,7 +262,7 @@ static void ref405ep_init(MachineState *machine)
         kernel_base = KERNEL_LOAD_ADDR;
         /* now we can load the kernel */
         kernel_size = load_image_targphys(kernel_filename, kernel_base,
-                                          ram_size - kernel_base);
+                                          machine->ram_size - kernel_base);
         if (kernel_size < 0) {
             error_report("could not load kernel '%s'", kernel_filename);
             exit(1);
@@ -266,7 +273,7 @@ static void ref405ep_init(MachineState *machine)
         if (initrd_filename) {
             initrd_base = INITRD_LOAD_ADDR;
             initrd_size = load_image_targphys(initrd_filename, initrd_base,
-                                              ram_size - initrd_base);
+                                              machine->ram_size - initrd_base);
             if (initrd_size < 0) {
                 error_report("could not load initial ram disk '%s'",
                              initrd_filename);
@@ -304,6 +311,7 @@ static void ref405ep_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "ref405ep";
     mc->init = ref405ep_init;
+    mc->default_ram_size = 0x08000000;
 }
 
 static const TypeInfo ref405ep_type = {
@@ -408,7 +416,7 @@ static void taihu_cpld_init(MemoryRegion *sysmem, uint32_t base)
 
 static void taihu_405ep_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     const char *kernel_filename = machine->kernel_filename;
     const char *initrd_filename = machine->initrd_filename;
     char *filename;
@@ -425,10 +433,14 @@ static void taihu_405ep_init(MachineState *machine)
     int fl_idx;
     DriveInfo *dinfo;
 
-    /* RAM is soldered to the board so the size cannot be changed */
-    ram_size = 0x08000000;
+    if (machine->ram_size != mc->default_ram_size) {
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
+    }
     memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
-                                         ram_size);
+                                         machine->ram_size);
 
     ram_bases[0] = 0;
     ram_sizes[0] = 0x04000000;
@@ -500,7 +512,7 @@ static void taihu_405ep_init(MachineState *machine)
         kernel_base = KERNEL_LOAD_ADDR;
         /* now we can load the kernel */
         kernel_size = load_image_targphys(kernel_filename, kernel_base,
-                                          ram_size - kernel_base);
+                                          machine->ram_size - kernel_base);
         if (kernel_size < 0) {
             error_report("could not load kernel '%s'", kernel_filename);
             exit(1);
@@ -509,7 +521,7 @@ static void taihu_405ep_init(MachineState *machine)
         if (initrd_filename) {
             initrd_base = INITRD_LOAD_ADDR;
             initrd_size = load_image_targphys(initrd_filename, initrd_base,
-                                              ram_size - initrd_base);
+                                              machine->ram_size - initrd_base);
             if (initrd_size < 0) {
                 error_report("could not load initial ram disk '%s'",
                              initrd_filename);
@@ -533,6 +545,7 @@ static void taihu_class_init(ObjectClass *oc, void *data)
 
     mc->desc = "taihu";
     mc->init = taihu_405ep_init;
+    mc->default_ram_size = 0x08000000;
 }
 
 static const TypeInfo taihu_type = {
-- 
2.18.1

[PATCH v5 64/79] ppc/ppc405_boards: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
in ref405ep alias RAM into ram_memories[] to avoid re-factoring
its user ppc405ep_init(), which would be invasive and out of
scope this patch.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/ppc405_boards.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 057882a5d2..f9c5b7791e 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -170,8 +170,8 @@ static void ref405ep_init(MachineState *machine)
     }
 
     /* XXX: fix this */
-    memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
-                                         machine->ram_size);
+    memory_region_init_alias(&ram_memories[0], NULL, "ef405ep.ram.alias",
+                             machine->ram, 0, machine->ram_size);
     ram_bases[0] = 0;
     ram_sizes[0] = machine->ram_size;
     memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
@@ -312,6 +312,7 @@ static void ref405ep_class_init(ObjectClass *oc, void *data)
     mc->desc = "ref405ep";
     mc->init = ref405ep_init;
     mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "ef405ep.ram";
 }
 
 static const TypeInfo ref405ep_type = {
@@ -424,7 +425,6 @@ static void taihu_405ep_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *bios;
     MemoryRegion *ram_memories = g_new(MemoryRegion, 2);
-    MemoryRegion *ram = g_malloc0(sizeof(*ram));
     hwaddr ram_bases[2], ram_sizes[2];
     long bios_size;
     target_ulong kernel_base, initrd_base;
@@ -439,18 +439,16 @@ static void taihu_405ep_init(MachineState *machine)
         g_free(sz);
         exit(EXIT_FAILURE);
     }
-    memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
-                                         machine->ram_size);
 
     ram_bases[0] = 0;
     ram_sizes[0] = 0x04000000;
     memory_region_init_alias(&ram_memories[0], NULL,
-                             "taihu_405ep.ram-0", ram, ram_bases[0],
+                             "taihu_405ep.ram-0", machine->ram, ram_bases[0],
                              ram_sizes[0]);
     ram_bases[1] = 0x04000000;
     ram_sizes[1] = 0x04000000;
     memory_region_init_alias(&ram_memories[1], NULL,
-                             "taihu_405ep.ram-1", ram, ram_bases[1],
+                             "taihu_405ep.ram-1", machine->ram, ram_bases[1],
                              ram_sizes[1]);
     ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
                   33333333, &pic, kernel_filename == NULL ? 0 : 1);
@@ -546,6 +544,7 @@ static void taihu_class_init(ObjectClass *oc, void *data)
     mc->desc = "taihu";
     mc->init = taihu_405ep_init;
     mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "ef405ep.ram";
 }
 
 static const TypeInfo taihu_type = {
-- 
2.18.1

[PATCH v5 65/79] ppc/{ppc440_bamboo, sam460ex}: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported or sometimes
crash like this:
  %QEMU -M bamboo -m 1
    exec.c:1926: find_ram_offset: Assertion `size != 0' failed.
    Aborted (core dumped)
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.
That also fixes crash issue, since wrongly calculated size
isn't used to allocate RAM

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v2:
  * s/ppc4xx_sdram_adjust/ppc4xx_sdram_prep/
     (BALATON Zoltan <balaton@eik.bme.hu>)
  * print possible valid ram size id not all RAM was distributed
  * initialize ram_bases/ram_bases at the same time we are checking
    that user supplied RAM would fit available banks and drop nested
    loop that were duplicating the same calculations.
  * coincidentally fix crash when -m is less than minimal bank size
v3:
  * s/ppc4xx_sdram_prep/ppc4xx_sdram_banks/
      (BALATON Zoltan <balaton@eik.bme.hu>)
  * fix subject line in commit message
v3.1:
  * add lost 'break' statement in 'j' loop
v3.2:
  * replace global ram_size with machine->ram_size in ppc4xx_sdram_banks() call
  * add a comment about the expected sorting order within sdram_bank_sizes[]
    (BALATON Zoltan <balaton@eik.bme.hu>)
---
 include/hw/ppc/ppc4xx.h |  9 +++----
 hw/ppc/ppc440_bamboo.c  | 11 +++-----
 hw/ppc/ppc4xx_devs.c    | 60 ++++++++++++++++++++++-------------------
 hw/ppc/sam460ex.c       |  5 ++--
 4 files changed, 42 insertions(+), 43 deletions(-)

diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h
index 7d82259051..b8c8f324b4 100644
--- a/include/hw/ppc/ppc4xx.h
+++ b/include/hw/ppc/ppc4xx.h
@@ -42,11 +42,10 @@ enum {
 qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
                        uint32_t dcr_base, int has_ssr, int has_vr);
 
-ram_addr_t ppc4xx_sdram_adjust(ram_addr_t ram_size, int nr_banks,
-                               MemoryRegion ram_memories[],
-                               hwaddr ram_bases[],
-                               hwaddr ram_sizes[],
-                               const ram_addr_t sdram_bank_sizes[]);
+void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+                        MemoryRegion ram_memories[],
+                        hwaddr ram_bases[], hwaddr ram_sizes[],
+                        const ram_addr_t sdram_bank_sizes[]);
 
 void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
                         MemoryRegion ram_memories[],
diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
index da777ef9c2..7e3bc0ec7f 100644
--- a/hw/ppc/ppc440_bamboo.c
+++ b/hw/ppc/ppc440_bamboo.c
@@ -158,7 +158,6 @@ static void main_cpu_reset(void *opaque)
 
 static void bamboo_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     const char *initrd_filename = machine->initrd_filename;
@@ -203,10 +202,8 @@ static void bamboo_init(MachineState *machine)
     /* SDRAM controller */
     memset(ram_bases, 0, sizeof(ram_bases));
     memset(ram_sizes, 0, sizeof(ram_sizes));
-    ram_size = ppc4xx_sdram_adjust(ram_size, PPC440EP_SDRAM_NR_BANKS,
-                                   ram_memories,
-                                   ram_bases, ram_sizes,
-                                   ppc440ep_sdram_bank_sizes);
+    ppc4xx_sdram_banks(machine->ram_size, PPC440EP_SDRAM_NR_BANKS, ram_memories,
+                       ram_bases, ram_sizes, ppc440ep_sdram_bank_sizes);
     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
                       ram_bases, ram_sizes, 1);
@@ -268,7 +265,7 @@ static void bamboo_init(MachineState *machine)
     /* Load initrd. */
     if (initrd_filename) {
         initrd_size = load_image_targphys(initrd_filename, RAMDISK_ADDR,
-                                          ram_size - RAMDISK_ADDR);
+                                          machine->ram_size - RAMDISK_ADDR);
 
         if (initrd_size < 0) {
             error_report("could not load ram disk '%s' at %x",
@@ -279,7 +276,7 @@ static void bamboo_init(MachineState *machine)
 
     /* If we're loading a kernel directly, we must load the device tree too. */
     if (kernel_filename) {
-        if (bamboo_load_device_tree(FDT_ADDR, ram_size, RAMDISK_ADDR,
+        if (bamboo_load_device_tree(FDT_ADDR, machine->ram_size, RAMDISK_ADDR,
                                     initrd_size, kernel_cmdline) < 0) {
             error_report("couldn't load device tree");
             exit(1);
diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
index c2e50138aa..d89008a2a4 100644
--- a/hw/ppc/ppc4xx_devs.c
+++ b/hw/ppc/ppc4xx_devs.c
@@ -668,21 +668,22 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
 
 /* Fill in consecutive SDRAM banks with 'ram_size' bytes of memory.
  *
- * sdram_bank_sizes[] must be 0-terminated.
+ * sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
+ * and must be 0-terminated.
  *
  * The 4xx SDRAM controller supports a small number of banks, and each bank
  * must be one of a small set of sizes. The number of banks and the supported
  * sizes varies by SoC. */
-ram_addr_t ppc4xx_sdram_adjust(ram_addr_t ram_size, int nr_banks,
-                               MemoryRegion ram_memories[],
-                               hwaddr ram_bases[],
-                               hwaddr ram_sizes[],
-                               const ram_addr_t sdram_bank_sizes[])
+void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+                        MemoryRegion ram_memories[],
+                        hwaddr ram_bases[], hwaddr ram_sizes[],
+                        const ram_addr_t sdram_bank_sizes[])
 {
     MemoryRegion *ram = g_malloc0(sizeof(*ram));
     ram_addr_t size_left = ram_size;
     ram_addr_t base = 0;
     ram_addr_t bank_size;
+    int last_bank = 0;
     int i;
     int j;
 
@@ -690,7 +691,12 @@ ram_addr_t ppc4xx_sdram_adjust(ram_addr_t ram_size, int nr_banks,
         for (j = 0; sdram_bank_sizes[j] != 0; j++) {
             bank_size = sdram_bank_sizes[j];
             if (bank_size <= size_left) {
+                ram_bases[i] = base;
+                ram_sizes[i] = bank_size;
+                base += bank_size;
                 size_left -= bank_size;
+                last_bank = i;
+                break;
             }
         }
         if (!size_left) {
@@ -699,34 +705,32 @@ ram_addr_t ppc4xx_sdram_adjust(ram_addr_t ram_size, int nr_banks,
         }
     }
 
-    ram_size -= size_left;
     if (size_left) {
-        error_report("Truncating memory to %" PRId64 " MiB to fit SDRAM"
-                     " controller limits", ram_size / MiB);
+        ram_addr_t used_size = ram_size - size_left;
+        GString *s = g_string_new(NULL);
+
+        for (i = 0; sdram_bank_sizes[i]; i++) {
+            g_string_append_printf(s, "%" PRIi64 "%s",
+                                   sdram_bank_sizes[i] / MiB,
+                                   sdram_bank_sizes[i + 1] ? " ," : "");
+        }
+        error_report("Max %d banks of %s MB DIMM/bank supported",
+            nr_banks, s->str);
+        error_report("Possible valid RAM size: %" PRIi64,
+            used_size ? used_size / MiB : sdram_bank_sizes[i - 1] / MiB);
+
+        g_string_free(s, true);
+        exit(EXIT_FAILURE);
     }
 
     memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
 
-    size_left = ram_size;
-    for (i = 0; i < nr_banks && size_left; i++) {
-        for (j = 0; sdram_bank_sizes[j] != 0; j++) {
-            bank_size = sdram_bank_sizes[j];
-
-            if (bank_size <= size_left) {
-                char name[32];
-                snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
-                memory_region_init_alias(&ram_memories[i], NULL, name, ram,
-                                         base, bank_size);
-                ram_bases[i] = base;
-                ram_sizes[i] = bank_size;
-                base += bank_size;
-                size_left -= bank_size;
-                break;
-            }
-        }
+    for (i = 0; i <= last_bank; i++) {
+        char name[32];
+        snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
+        memory_region_init_alias(&ram_memories[i], NULL, name, ram,
+                                 ram_bases[i], ram_sizes[i]);
     }
-
-    return ram_size;
 }
 
 /*****************************************************************************/
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 89bc70eb94..17d40bd672 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -324,9 +324,8 @@ static void sam460ex_init(MachineState *machine)
     /* SDRAM controller */
     /* put all RAM on first bank because board has one slot
      * and firmware only checks that */
-    machine->ram_size = ppc4xx_sdram_adjust(machine->ram_size, 1,
-                                   ram_memories, ram_bases, ram_sizes,
-                                   ppc460ex_sdram_bank_sizes);
+    ppc4xx_sdram_banks(machine->ram_size, 1, ram_memories, ram_bases, ram_sizes,
+                       ppc460ex_sdram_bank_sizes);
 
     /* FIXME: does 460EX have ECC interrupts? */
     ppc440_sdram_init(env, SDRAM_NR_BANKS, ram_memories,
-- 
2.18.1

[PATCH v5 66/79] ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v3:
  * drop ram_size from comment above ppc4xx_sdram_banks
     (BALATON Zoltan <balaton@eik.bme.hu>)
  * move memory alias initialization into the same loop
    where RAM is split on banks.
     (BALATON Zoltan <balaton@eik.bme.hu>)
v3.1
  * rebase on top of previous patch due to changed context
---
 include/hw/ppc/ppc4xx.h |  2 +-
 hw/ppc/ppc440_bamboo.c  |  3 ++-
 hw/ppc/ppc4xx_devs.c    | 25 +++++++++----------------
 hw/ppc/sam460ex.c       |  3 ++-
 4 files changed, 14 insertions(+), 19 deletions(-)

diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h
index b8c8f324b4..cc19c8da5b 100644
--- a/include/hw/ppc/ppc4xx.h
+++ b/include/hw/ppc/ppc4xx.h
@@ -42,7 +42,7 @@ enum {
 qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
                        uint32_t dcr_base, int has_ssr, int has_vr);
 
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[]);
diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
index 7e3bc0ec7f..4c5e9e4373 100644
--- a/hw/ppc/ppc440_bamboo.c
+++ b/hw/ppc/ppc440_bamboo.c
@@ -202,7 +202,7 @@ static void bamboo_init(MachineState *machine)
     /* SDRAM controller */
     memset(ram_bases, 0, sizeof(ram_bases));
     memset(ram_sizes, 0, sizeof(ram_sizes));
-    ppc4xx_sdram_banks(machine->ram_size, PPC440EP_SDRAM_NR_BANKS, ram_memories,
+    ppc4xx_sdram_banks(machine->ram, PPC440EP_SDRAM_NR_BANKS, ram_memories,
                        ram_bases, ram_sizes, ppc440ep_sdram_bank_sizes);
     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
@@ -289,6 +289,7 @@ static void bamboo_machine_init(MachineClass *mc)
     mc->desc = "bamboo";
     mc->init = bamboo_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("bamboo", bamboo_machine_init)
diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
index d89008a2a4..0e2f81c4f7 100644
--- a/hw/ppc/ppc4xx_devs.c
+++ b/hw/ppc/ppc4xx_devs.c
@@ -666,7 +666,7 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
         sdram_map_bcr(sdram);
 }
 
-/* Fill in consecutive SDRAM banks with 'ram_size' bytes of memory.
+/* Split RAM between SDRAM banks.
  *
  * sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
  * and must be 0-terminated.
@@ -674,16 +674,14 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
  * The 4xx SDRAM controller supports a small number of banks, and each bank
  * must be one of a small set of sizes. The number of banks and the supported
  * sizes varies by SoC. */
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[])
 {
-    MemoryRegion *ram = g_malloc0(sizeof(*ram));
-    ram_addr_t size_left = ram_size;
+    ram_addr_t size_left = memory_region_size(ram);
     ram_addr_t base = 0;
     ram_addr_t bank_size;
-    int last_bank = 0;
     int i;
     int j;
 
@@ -691,11 +689,15 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         for (j = 0; sdram_bank_sizes[j] != 0; j++) {
             bank_size = sdram_bank_sizes[j];
             if (bank_size <= size_left) {
+                char name[32];
+
                 ram_bases[i] = base;
                 ram_sizes[i] = bank_size;
                 base += bank_size;
                 size_left -= bank_size;
-                last_bank = i;
+                snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
+                memory_region_init_alias(&ram_memories[i], NULL, name, ram,
+                                         ram_bases[i], ram_sizes[i]);
                 break;
             }
         }
@@ -706,7 +708,7 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
     }
 
     if (size_left) {
-        ram_addr_t used_size = ram_size - size_left;
+        ram_addr_t used_size = memory_region_size(ram) - size_left;
         GString *s = g_string_new(NULL);
 
         for (i = 0; sdram_bank_sizes[i]; i++) {
@@ -722,15 +724,6 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         g_string_free(s, true);
         exit(EXIT_FAILURE);
     }
-
-    memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
-
-    for (i = 0; i <= last_bank; i++) {
-        char name[32];
-        snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
-        memory_region_init_alias(&ram_memories[i], NULL, name, ram,
-                                 ram_bases[i], ram_sizes[i]);
-    }
 }
 
 /*****************************************************************************/
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 17d40bd672..898453cf30 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -324,7 +324,7 @@ static void sam460ex_init(MachineState *machine)
     /* SDRAM controller */
     /* put all RAM on first bank because board has one slot
      * and firmware only checks that */
-    ppc4xx_sdram_banks(machine->ram_size, 1, ram_memories, ram_bases, ram_sizes,
+    ppc4xx_sdram_banks(machine->ram, 1, ram_memories, ram_bases, ram_sizes,
                        ppc460ex_sdram_bank_sizes);
 
     /* FIXME: does 460EX have ECC interrupts? */
@@ -484,6 +484,7 @@ static void sam460ex_machine_init(MachineClass *mc)
     mc->init = sam460ex_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("460exb");
     mc->default_ram_size = 512 * MiB;
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("sam460ex", sam460ex_machine_init)
-- 
2.18.1

[PATCH v5 67/79] ppc/spapr: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/spapr.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index c9b2e0a5e0..4d90f99195 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2634,7 +2634,6 @@ static void spapr_machine_init(MachineState *machine)
     PCIHostState *phb;
     int i;
     MemoryRegion *sysmem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     hwaddr node0_size = spapr_node0_size(machine);
     long load_limit, fw_size;
     char *filename;
@@ -2813,10 +2812,8 @@ static void spapr_machine_init(MachineState *machine)
         kvmppc_enable_h_page_init();
     }
 
-    /* allocate RAM */
-    memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram",
-                                         machine->ram_size);
-    memory_region_add_subregion(sysmem, 0, ram);
+    /* map RAM */
+    memory_region_add_subregion(sysmem, 0, machine->ram);
 
     /* always allocate the device memory information */
     machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
@@ -4400,6 +4397,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     mc->no_parallel = 1;
     mc->default_boot_order = "";
     mc->default_ram_size = 512 * MiB;
+    mc->default_ram_id = "ppc_spapr.ram";
     mc->default_display = "std";
     mc->kvm_type = spapr_kvm_type;
     machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE);
-- 
2.18.1

[PATCH v5 68/79] ppc/virtex_ml507: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ppc/virtex_ml507.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/virtex_ml507.c b/hw/ppc/virtex_ml507.c
index 91dd00ee91..b6f4507dcf 100644
--- a/hw/ppc/virtex_ml507.c
+++ b/hw/ppc/virtex_ml507.c
@@ -193,7 +193,6 @@ static int xilinx_load_device_tree(hwaddr addr,
 
 static void virtex_init(MachineState *machine)
 {
-    ram_addr_t ram_size = machine->ram_size;
     const char *kernel_filename = machine->kernel_filename;
     const char *kernel_cmdline = machine->kernel_cmdline;
     hwaddr initrd_base = 0;
@@ -204,7 +203,6 @@ static void virtex_init(MachineState *machine)
     CPUPPCState *env;
     hwaddr ram_base = 0;
     DriveInfo *dinfo;
-    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
     qemu_irq irq[32], *cpu_irq;
     int kernel_size;
     int i;
@@ -221,8 +219,7 @@ static void virtex_init(MachineState *machine)
 
     qemu_register_reset(main_cpu_reset, cpu);
 
-    memory_region_allocate_system_memory(phys_ram, NULL, "ram", ram_size);
-    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
+    memory_region_add_subregion(address_space_mem, ram_base, machine->ram);
 
     dinfo = drive_get(IF_PFLASH, 0, 0);
     pflash_cfi01_register(PFLASH_BASEADDR, "virtex.flash", FLASH_SIZE,
@@ -265,7 +262,7 @@ static void virtex_init(MachineState *machine)
             /* If we failed loading ELF's try a raw image.  */
             kernel_size = load_image_targphys(kernel_filename,
                                               boot_offset,
-                                              ram_size);
+                                              machine->ram_size);
             boot_info.bootstrap_pc = boot_offset;
             high = boot_info.bootstrap_pc + kernel_size + 8192;
         }
@@ -276,7 +273,7 @@ static void virtex_init(MachineState *machine)
         if (machine->initrd_filename) {
             initrd_base = high = ROUND_UP(high, 4);
             initrd_size = load_image_targphys(machine->initrd_filename,
-                                              high, ram_size - high);
+                                              high, machine->ram_size - high);
 
             if (initrd_size < 0) {
                 error_report("couldn't load ram disk '%s'",
@@ -290,7 +287,7 @@ static void virtex_init(MachineState *machine)
         boot_info.fdt = high + (8192 * 2);
         boot_info.fdt &= ~8191;
 
-        xilinx_load_device_tree(boot_info.fdt, ram_size,
+        xilinx_load_device_tree(boot_info.fdt, machine->ram_size,
                                 initrd_base, initrd_size,
                                 kernel_cmdline);
     }
@@ -302,6 +299,7 @@ static void virtex_machine_init(MachineClass *mc)
     mc->desc = "Xilinx Virtex ML507 reference design";
     mc->init = virtex_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440-xilinx");
+    mc->default_ram_id = "ram";
 }
 
 DEFINE_MACHINE("virtex-ml507", virtex_machine_init)
-- 
2.18.1

[PATCH v5 69/79] sparc/leon3: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/sparc/leon3.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/hw/sparc/leon3.c b/hw/sparc/leon3.c
index f5a087dd86..5fa58aa55f 100644
--- a/hw/sparc/leon3.c
+++ b/hw/sparc/leon3.c
@@ -189,7 +189,6 @@ static void leon3_generic_hw_init(MachineState *machine)
     SPARCCPU *cpu;
     CPUSPARCState   *env;
     MemoryRegion *address_space_mem = get_system_memory();
-    MemoryRegion *ram = g_new(MemoryRegion, 1);
     MemoryRegion *prom = g_new(MemoryRegion, 1);
     int         ret;
     char       *filename;
@@ -251,8 +250,8 @@ static void leon3_generic_hw_init(MachineState *machine)
         exit(1);
     }
 
-    memory_region_allocate_system_memory(ram, NULL, "leon3.ram", ram_size);
-    memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET, ram);
+    memory_region_add_subregion(address_space_mem, LEON3_RAM_OFFSET,
+                                machine->ram);
 
     /* Allocate BIOS */
     prom_size = 8 * MiB;
@@ -358,6 +357,7 @@ static void leon3_generic_machine_init(MachineClass *mc)
     mc->desc = "Leon-3 generic";
     mc->init = leon3_generic_hw_init;
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("LEON3");
+    mc->default_ram_id = "leon3.ram";
 }
 
 DEFINE_MACHINE("leon3_generic", leon3_generic_machine_init)
-- 
2.18.1

[PATCH v5 70/79] sparc/sun4m: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Patch moves ram size check into sun4m_hw_init() and drops
ram_init() moving remainder to sun4m_hw_init() as well,
as it was the only place that called it.

Also it rewrites impl. of RamDevice a little bit, which
could serve as an example of frontend device for RAM backend.
(Caveats are:
  1. it doesn't check for memdev backend being mapped
     since it's been  usurped by generic machine to handle
     majority of machines which don't have RAM frontend device
  2. it still lacks 'addr' property and still has hardcoded
     sysbus_mmio_map() in board init. If done right, board should
     set 'addr' property and bus/machine plug handler should map
     it during device realize time.
)
Further improvements were left as exercise for the future,
since frontends are out scope of RAM conversion to memdev.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v4:
  * 'machine: introduce memory-backend property' patch changed
    'memory-backend' property from link to backend id to allow for
    delayed initialization. Take that in account and add resolving
    machine->ram_memdev_id into backend pointer efore setting link
    on RamDevice.

CC: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
CC: atar4qemu@gmail.com
---
 hw/sparc/sun4m.c | 74 ++++++++++++++++++++++++------------------------
 1 file changed, 37 insertions(+), 37 deletions(-)

diff --git a/hw/sparc/sun4m.c b/hw/sparc/sun4m.c
index 25e96db5ca..f5bf95fc9f 100644
--- a/hw/sparc/sun4m.c
+++ b/hw/sparc/sun4m.c
@@ -777,63 +777,42 @@ static const TypeInfo prom_info = {
 
 typedef struct RamDevice {
     SysBusDevice parent_obj;
-
-    MemoryRegion ram;
-    uint64_t size;
+    HostMemoryBackend *memdev;
 } RamDevice;
 
 /* System RAM */
 static void ram_realize(DeviceState *dev, Error **errp)
 {
     RamDevice *d = SUN4M_RAM(dev);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
+    MemoryRegion *ram = host_memory_backend_get_memory(d->memdev);
 
-    memory_region_allocate_system_memory(&d->ram, OBJECT(d), "sun4m.ram",
-                                         d->size);
-    sysbus_init_mmio(sbd, &d->ram);
+    sysbus_init_mmio(SYS_BUS_DEVICE(dev), ram);
 }
 
-static void ram_init(hwaddr addr, ram_addr_t RAM_size,
-                     uint64_t max_mem)
+static void ram_initfn(Object *obj)
 {
-    DeviceState *dev;
-    SysBusDevice *s;
-    RamDevice *d;
-
-    /* allocate RAM */
-    if ((uint64_t)RAM_size > max_mem) {
-        error_report("Too much memory for this machine: %" PRId64 ","
-                     " maximum %" PRId64,
-                     RAM_size / MiB, max_mem / MiB);
-        exit(1);
-    }
-    dev = qdev_create(NULL, "memory");
-    s = SYS_BUS_DEVICE(dev);
-
-    d = SUN4M_RAM(dev);
-    d->size = RAM_size;
-    qdev_init_nofail(dev);
-
-    sysbus_mmio_map(s, 0, addr);
+    RamDevice *d = SUN4M_RAM(obj);
+    object_property_add_link(obj, "memdev", TYPE_MEMORY_BACKEND,
+                             (Object **)&d->memdev,
+                             object_property_allow_set_link,
+                             OBJ_PROP_LINK_STRONG, &error_abort);
+    object_property_set_description(obj, "memdev", "Set RAM backend"
+                                    "Valid value is ID of a hostmem backend",
+                                     &error_abort);
 }
 
-static Property ram_properties[] = {
-    DEFINE_PROP_UINT64("size", RamDevice, size, 0),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
 static void ram_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
     dc->realize = ram_realize;
-    device_class_set_props(dc, ram_properties);
 }
 
 static const TypeInfo ram_info = {
     .name          = TYPE_SUN4M_MEMORY,
     .parent        = TYPE_SYS_BUS_DEVICE,
     .instance_size = sizeof(RamDevice),
+    .instance_init = ram_initfn,
     .class_init    = ram_class_init,
 };
 
@@ -879,6 +858,15 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     SysBusDevice *s;
     unsigned int smp_cpus = machine->smp.cpus;
     unsigned int max_cpus = machine->smp.max_cpus;
+    Object *ram_memdev = object_resolve_path_type(machine->ram_memdev_id,
+                                                  TYPE_MEMORY_BACKEND, NULL);
+
+    if (machine->ram_size > hwdef->max_mem) {
+        error_report("Too much memory for this machine: %" PRId64 ","
+                     " maximum %" PRId64,
+                     machine->ram_size / MiB, hwdef->max_mem / MiB);
+        exit(1);
+    }
 
     /* init CPUs */
     for(i = 0; i < smp_cpus; i++) {
@@ -888,9 +876,12 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
     for (i = smp_cpus; i < MAX_CPUS; i++)
         cpu_irqs[i] = qemu_allocate_irqs(dummy_cpu_set_irq, NULL, MAX_PILS);
 
+    /* Create and map RAM frontend */
+    dev = qdev_create(NULL, "memory");
+    object_property_set_link(OBJECT(dev), ram_memdev, "memdev", &error_fatal);
+    qdev_init_nofail(dev);
+    sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, 0);
 
-    /* set up devices */
-    ram_init(0, machine->ram_size, hwdef->max_mem);
     /* models without ECC don't trap when missing ram is accessed */
     if (!hwdef->ecc_base) {
         empty_slot_init(machine->ram_size, hwdef->max_mem - machine->ram_size);
@@ -1078,7 +1069,7 @@ static void sun4m_hw_init(const struct sun4m_hwdef *hwdef,
 
     fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, (uint16_t)smp_cpus);
     fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)max_cpus);
-    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
+    fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)machine->ram_size);
     fw_cfg_add_i16(fw_cfg, FW_CFG_MACHINE_ID, hwdef->machine_id);
     fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_DEPTH, graphic_depth);
     fw_cfg_add_i16(fw_cfg, FW_CFG_SUN4M_WIDTH, graphic_width);
@@ -1415,6 +1406,7 @@ static void ss5_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("Fujitsu-MB86904");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss5_type = {
@@ -1434,6 +1426,7 @@ static void ss10_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-SuperSparc-II");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss10_type = {
@@ -1453,6 +1446,7 @@ static void ss600mp_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-SuperSparc-II");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss600mp_type = {
@@ -1472,6 +1466,7 @@ static void ss20_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-SuperSparc-II");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss20_type = {
@@ -1490,6 +1485,7 @@ static void voyager_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("Fujitsu-MB86904");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo voyager_type = {
@@ -1508,6 +1504,7 @@ static void ss_lx_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-MicroSparc-I");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss_lx_type = {
@@ -1526,6 +1523,7 @@ static void ss4_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("Fujitsu-MB86904");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo ss4_type = {
@@ -1544,6 +1542,7 @@ static void scls_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-MicroSparc-I");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo scls_type = {
@@ -1562,6 +1561,7 @@ static void sbook_class_init(ObjectClass *oc, void *data)
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("TI-MicroSparc-I");
     mc->default_display = "tcx";
+    mc->default_ram_id = "sun4m.ram";
 }
 
 static const TypeInfo sbook_type = {
-- 
2.18.1

[PATCH v5 71/79] sparc/niagara: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/sparc64/niagara.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/hw/sparc64/niagara.c b/hw/sparc64/niagara.c
index 5eb2d097b9..ab5ef8c5b3 100644
--- a/hw/sparc64/niagara.c
+++ b/hw/sparc64/niagara.c
@@ -40,7 +40,6 @@
 
 typedef struct NiagaraBoardState {
     MemoryRegion hv_ram;
-    MemoryRegion partition_ram;
     MemoryRegion nvram;
     MemoryRegion md_rom;
     MemoryRegion hv_rom;
@@ -111,11 +110,8 @@ static void niagara_init(MachineState *machine)
                            NIAGARA_HV_RAM_SIZE, &error_fatal);
     memory_region_add_subregion(sysmem, NIAGARA_HV_RAM_BASE, &s->hv_ram);
 
-    memory_region_allocate_system_memory(&s->partition_ram, NULL,
-                                         "sun4v-partition.ram",
-                                         machine->ram_size);
     memory_region_add_subregion(sysmem, NIAGARA_PARTITION_RAM_BASE,
-                                &s->partition_ram);
+                                machine->ram);
 
     memory_region_init_ram(&s->nvram, NULL, "sun4v.nvram", NIAGARA_NVRAM_SIZE,
                            &error_fatal);
@@ -173,6 +169,7 @@ static void niagara_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = 1; /* XXX for now */
     mc->default_boot_order = "c";
     mc->default_cpu_type = SPARC_CPU_TYPE_NAME("Sun-UltraSparc-T1");
+    mc->default_ram_id = "sun4v-partition.ram";
 }
 
 static const TypeInfo niagara_type = {
-- 
2.18.1

[PATCH v5 72/79] remove no longer used memory_region_allocate_system_memory()

[Igor Mammedov]

all boards were switched to using memdev backend for main RAM,
so we can drop no longer used memory_region_allocate_system_memory()

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: ehabkost@redhat.com
CC: pbonzini@redhat.com
---
 include/hw/boards.h | 32 --------------------------------
 hw/core/numa.c      | 34 ----------------------------------
 2 files changed, 66 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index ae2b60fb5e..142b86d0ae 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -12,38 +12,6 @@
 #include "qom/object.h"
 #include "hw/core/cpu.h"
 
-/**
- * memory_region_allocate_system_memory - Allocate a board's main memory
- * @mr: the #MemoryRegion to be initialized
- * @owner: the object that tracks the region's reference count
- * @name: name of the memory region
- * @ram_size: size of the region in bytes
- *
- * This function allocates the main memory for a board model, and
- * initializes @mr appropriately. It also arranges for the memory
- * to be migrated (by calling vmstate_register_ram_global()).
- *
- * Memory allocated via this function will be backed with the memory
- * backend the user provided using "-mem-path" or "-numa node,memdev=..."
- * if appropriate; this is typically used to cause host huge pages to be
- * used. This function should therefore be called by a board exactly once,
- * for the primary or largest RAM area it implements.
- *
- * For boards where the major RAM is split into two parts in the memory
- * map, you can deal with this by calling memory_region_allocate_system_memory()
- * once to get a MemoryRegion with enough RAM for both parts, and then
- * creating alias MemoryRegions via memory_region_init_alias() which
- * alias into different parts of the RAM MemoryRegion and can be mapped
- * into the memory map in the appropriate places.
- *
- * Smaller pieces of memory (display RAM, static RAMs, etc) don't need
- * to be backed via the -mem-path memory backend and can simply
- * be created via memory_region_init_ram().
- */
-void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
-                                          const char *name,
-                                          uint64_t ram_size);
-
 #define TYPE_MACHINE_SUFFIX "-machine"
 
 /* Machine class name that needs to be used for class-name-based machine
diff --git a/hw/core/numa.c b/hw/core/numa.c
index e6baf2c33e..316bc50d75 100644
--- a/hw/core/numa.c
+++ b/hw/core/numa.c
@@ -806,40 +806,6 @@ void numa_cpu_pre_plug(const CPUArchId *slot, DeviceState *dev, Error **errp)
     }
 }
 
-static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner,
-                                           const char *name,
-                                           uint64_t ram_size)
-{
-    if (mem_path) {
-#ifdef __linux__
-        memory_region_init_ram_from_file(mr, owner, name, ram_size, 0, 0,
-                                         mem_path, &error_fatal);
-#else
-        fprintf(stderr, "-mem-path not supported on this host\n");
-        exit(1);
-#endif
-    } else {
-        memory_region_init_ram_nomigrate(mr, owner, name, ram_size, &error_fatal);
-    }
-    vmstate_register_ram_global(mr);
-}
-
-void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
-                                          const char *name,
-                                          uint64_t ram_size)
-{
-    MachineState *ms = MACHINE(qdev_get_machine());
-
-    if (ms->numa_state == NULL ||
-        ms->numa_state->num_nodes == 0 || numa_uses_legacy_mem()) {
-        allocate_system_memory_nonnuma(mr, owner, name, ram_size);
-        return;
-    }
-
-    memory_region_init(mr, owner, name, ram_size);
-    numa_init_memdev_container(ms, mr);
-}
-
 static void numa_stat_memory_devices(NumaNodeMem node_mem[])
 {
     MemoryDeviceInfoList *info_list = qmp_memory_device_list();
-- 
2.18.1

[PATCH v5 73/79] exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize()

[Igor Mammedov]

Since all RAM is backed by hostmem backends, drop
global -mem-path invariant and simplify code.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
---
v4:
  * fix access to uninitialized pagesize/hpsize
    (David Gibson <david@gibson.dropbear.id.au>)

CC: thuth@redhat.com
CC: aik@ozlabs.ru
CC: mdroth@linux.vnet.ibm.com
CC: david@gibson.dropbear.id.au
CC: qemu-ppc@nongnu.org
CC: pbonzini@redhat.com
CC: rth@twiddle.net
---
 exec.c | 49 ++++---------------------------------------------
 1 file changed, 4 insertions(+), 45 deletions(-)

diff --git a/exec.c b/exec.c
index 8e9cc3b47c..d85a8689d4 100644
--- a/exec.c
+++ b/exec.c
@@ -1667,59 +1667,18 @@ static int find_max_backend_pagesize(Object *obj, void *opaque)
 long qemu_minrampagesize(void)
 {
     long hpsize = LONG_MAX;
-    long mainrampagesize;
-    Object *memdev_root;
-    MachineState *ms = MACHINE(qdev_get_machine());
-
-    mainrampagesize = qemu_mempath_getpagesize(mem_path);
-
-    /* it's possible we have memory-backend objects with
-     * hugepage-backed RAM. these may get mapped into system
-     * address space via -numa parameters or memory hotplug
-     * hooks. we want to take these into account, but we
-     * also want to make sure these supported hugepage
-     * sizes are applicable across the entire range of memory
-     * we may boot from, so we take the min across all
-     * backends, and assume normal pages in cases where a
-     * backend isn't backed by hugepages.
-     */
-    memdev_root = object_resolve_path("/objects", NULL);
-    if (memdev_root) {
-        object_child_foreach(memdev_root, find_min_backend_pagesize, &hpsize);
-    }
-    if (hpsize == LONG_MAX) {
-        /* No additional memory regions found ==> Report main RAM page size */
-        return mainrampagesize;
-    }
-
-    /* If NUMA is disabled or the NUMA nodes are not backed with a
-     * memory-backend, then there is at least one node using "normal" RAM,
-     * so if its page size is smaller we have got to report that size instead.
-     */
-    if (hpsize > mainrampagesize &&
-        (ms->numa_state == NULL ||
-         ms->numa_state->num_nodes == 0 ||
-         ms->numa_state->nodes[0].node_memdev == NULL)) {
-        static bool warned;
-        if (!warned) {
-            error_report("Huge page support disabled (n/a for main memory).");
-            warned = true;
-        }
-        return mainrampagesize;
-    }
+    Object *memdev_root = object_resolve_path("/objects", NULL);
 
+    object_child_foreach(memdev_root, find_min_backend_pagesize, &hpsize);
     return hpsize;
 }
 
 long qemu_maxrampagesize(void)
 {
-    long pagesize = qemu_mempath_getpagesize(mem_path);
+    long pagesize = 0;
     Object *memdev_root = object_resolve_path("/objects", NULL);
 
-    if (memdev_root) {
-        object_child_foreach(memdev_root, find_max_backend_pagesize,
-                             &pagesize);
-    }
+    object_child_foreach(memdev_root, find_max_backend_pagesize, &pagesize);
     return pagesize;
 }
 #else
-- 
2.18.1

[PATCH v5 74/79] exec: drop bogus mem_path from qemu_ram_alloc_from_fd()

[Igor Mammedov]

Function will report error that will mention global mem_path,
which was valid the only if legacy -mem-path was used and
only in case of main RAM.

However it doesn't work with hostmem backends
(for example:
"
  qemu: -object memory-backend-file,id=ram0,size=128M,mem-path=foo:
    backing store (null) size 0x200000 does not match 'size' option 0x8000000
")
and couldn't possibly work in general FD case the function
is supposed to handle.

Taking in account that main RAM was converted into
memory-backend-foo object, there is no point in printing
file name (from inappropriate place) as failing path is
a part of backend's error message.

Hence drop bogus mem_path usage from qemu_ram_alloc_from_fd(),
it's a job of its user to add file name to error message if applicable.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 exec.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/exec.c b/exec.c
index d85a8689d4..6ebff8bd3a 100644
--- a/exec.c
+++ b/exec.c
@@ -2307,9 +2307,9 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
     size = HOST_PAGE_ALIGN(size);
     file_size = get_file_size(fd);
     if (file_size > 0 && file_size < size) {
-        error_setg(errp, "backing store %s size 0x%" PRIx64
+        error_setg(errp, "backing store size 0x%" PRIx64
                    " does not match 'size' option 0x" RAM_ADDR_FMT,
-                   mem_path, file_size, size);
+                   file_size, size);
         return NULL;
     }
 
-- 
2.18.1

[PATCH v5 75/79] make mem_path local variable

[Igor Mammedov]

It's no longer used anywhere beside main(),
so make it local variable that is used for CLI compat
purposes to keep -mem-path option working.

Under hood QEMU will use it to create
  memory-backend-file,mem-path=...
backend and use its MemoryRegion as main RAM.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
CC: pbonzini@redhat.com
---
 include/sysemu/sysemu.h | 1 -
 vl.c                    | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index c0678c1ca3..ae78b2a122 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -50,7 +50,6 @@ extern uint8_t *boot_splash_filedata;
 extern bool enable_mlock;
 extern bool enable_cpu_pm;
 extern QEMUClockType rtc_clock;
-extern const char *mem_path;
 extern int mem_prealloc;
 
 #define MAX_OPTION_ROMS 16
diff --git a/vl.c b/vl.c
index a7edcba094..15cc5bd565 100644
--- a/vl.c
+++ b/vl.c
@@ -140,7 +140,6 @@ enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
 int display_opengl;
 const char* keyboard_layout = NULL;
 ram_addr_t ram_size;
-const char *mem_path = NULL;
 int mem_prealloc = 0; /* force preallocation of physical target memory */
 bool enable_mlock = false;
 bool enable_cpu_pm = false;
@@ -2883,6 +2882,7 @@ int main(int argc, char **argv, char **envp)
     Error *err = NULL;
     bool list_data_dirs = false;
     char *dir, **dirs;
+    const char *mem_path = NULL;
     BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
     QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
 
-- 
2.18.1

[PATCH v5 76/79] hostmem: introduce "prealloc-threads" property

[Igor Mammedov]

the property will allow user to specify number of threads to use
in pre-allocation stage. It also will allow to reduce implicit
hostmem dependency on current_machine.
On object creation it will default to 1, but via machine
compat property it will be updated to MachineState::smp::cpus
to keep current behavior for hostmem and main RAM (which is
now also hostmem based).

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v3:
  - use object_register_sugar_prop() instead of directly hacking
    compat_props (Paolo Bonzini <pbonzini@redhat.com>)
  - fix TODO description

CC: pbonzini@redhat.com
CC: ehabkost@redhat.com
---
 include/sysemu/hostmem.h |  2 ++
 backends/hostmem.c       | 43 ++++++++++++++++++++++++++++++++++++----
 vl.c                     | 14 +++++++++----
 3 files changed, 51 insertions(+), 8 deletions(-)

diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h
index 5db0d668ec..bdf86665ab 100644
--- a/include/sysemu/hostmem.h
+++ b/include/sysemu/hostmem.h
@@ -61,6 +61,7 @@ struct HostMemoryBackendClass {
  * @parent: opaque parent object container
  * @size: amount of memory backend provides
  * @mr: MemoryRegion representing host memory belonging to backend
+ * @prealloc_threads: number of threads to be used for preallocatining RAM
  */
 struct HostMemoryBackend {
     /* private */
@@ -70,6 +71,7 @@ struct HostMemoryBackend {
     uint64_t size;
     bool merge, dump, use_canonical_path;
     bool prealloc, force_prealloc, is_mapped, share;
+    uint32_t prealloc_threads;
     DECLARE_BITMAP(host_nodes, MAX_NODES + 1);
     HostMemPolicy policy;
 
diff --git a/backends/hostmem.c b/backends/hostmem.c
index e773bdfa6e..0988986016 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -223,7 +223,6 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value,
 {
     Error *local_err = NULL;
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
-    MachineState *ms = MACHINE(qdev_get_machine());
 
     if (backend->force_prealloc) {
         if (value) {
@@ -243,7 +242,7 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value,
         void *ptr = memory_region_get_ram_ptr(&backend->mr);
         uint64_t sz = memory_region_size(&backend->mr);
 
-        os_mem_prealloc(fd, ptr, sz, ms->smp.cpus, &local_err);
+        os_mem_prealloc(fd, ptr, sz, backend->prealloc_threads, &local_err);
         if (local_err) {
             error_propagate(errp, local_err);
             return;
@@ -252,14 +251,45 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value,
     }
 }
 
+static void host_memory_backend_get_prealloc_threads(Object *obj, Visitor *v,
+    const char *name, void *opaque, Error **errp)
+{
+    HostMemoryBackend *backend = MEMORY_BACKEND(obj);
+    visit_type_uint32(v, name, &backend->prealloc_threads, errp);
+}
+
+static void host_memory_backend_set_prealloc_threads(Object *obj, Visitor *v,
+    const char *name, void *opaque, Error **errp)
+{
+    HostMemoryBackend *backend = MEMORY_BACKEND(obj);
+    Error *local_err = NULL;
+    uint32_t value;
+
+    visit_type_uint32(v, name, &value, &local_err);
+    if (local_err) {
+        goto out;
+    }
+    if (value <= 0) {
+        error_setg(&local_err,
+                   "property '%s' of %s doesn't take value '%d'",
+                   name, object_get_typename(obj), value);
+        goto out;
+    }
+    backend->prealloc_threads = value;
+out:
+    error_propagate(errp, local_err);
+}
+
 static void host_memory_backend_init(Object *obj)
 {
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
     MachineState *machine = MACHINE(qdev_get_machine());
 
+    /* TODO: convert access to globals to compat properties */
     backend->merge = machine_mem_merge(machine);
     backend->dump = machine_dump_guest_core(machine);
     backend->prealloc = mem_prealloc;
+    backend->prealloc_threads = 1;
 }
 
 static void host_memory_backend_post_init(Object *obj)
@@ -313,7 +343,6 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp)
 {
     HostMemoryBackend *backend = MEMORY_BACKEND(uc);
     HostMemoryBackendClass *bc = MEMORY_BACKEND_GET_CLASS(uc);
-    MachineState *ms = MACHINE(qdev_get_machine());
     Error *local_err = NULL;
     void *ptr;
     uint64_t sz;
@@ -378,7 +407,7 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp)
          */
         if (backend->prealloc) {
             os_mem_prealloc(memory_region_get_fd(&backend->mr), ptr, sz,
-                            ms->smp.cpus, &local_err);
+                            backend->prealloc_threads, &local_err);
             if (local_err) {
                 goto out;
             }
@@ -456,6 +485,12 @@ host_memory_backend_class_init(ObjectClass *oc, void *data)
         host_memory_backend_set_prealloc, &error_abort);
     object_class_property_set_description(oc, "prealloc",
         "Preallocate memory", &error_abort);
+    object_class_property_add(oc, "prealloc-threads", "int",
+        host_memory_backend_get_prealloc_threads,
+        host_memory_backend_set_prealloc_threads,
+        NULL, NULL, &error_abort);
+    object_class_property_set_description(oc, "prealloc-threads",
+        "Number of CPU threads to use for prealloc", &error_abort);
     object_class_property_add(oc, "size", "int",
         host_memory_backend_get_size,
         host_memory_backend_set_size,
diff --git a/vl.c b/vl.c
index 15cc5bd565..afc682e168 100644
--- a/vl.c
+++ b/vl.c
@@ -2828,8 +2828,7 @@ static void configure_accelerators(const char *progname)
     }
 }
 
-static void create_default_memdev(MachineState *ms, const char *path,
-                                  bool prealloc)
+static void create_default_memdev(MachineState *ms, const char *path)
 {
     Object *obj;
     MachineClass *mc = MACHINE_GET_CLASS(ms);
@@ -2838,7 +2837,6 @@ static void create_default_memdev(MachineState *ms, const char *path,
     if (path) {
         object_property_set_str(obj, path, "mem-path", &error_fatal);
     }
-    object_property_set_bool(obj, prealloc, "prealloc", &error_fatal);
     object_property_set_int(obj, ms->ram_size, "size", &error_fatal);
     object_property_add_child(object_get_objects_root(), mc->default_ram_id,
                               obj, &error_fatal);
@@ -3980,6 +3978,14 @@ int main(int argc, char **argv, char **envp)
         exit(1);
     }
 
+    if (mem_prealloc) {
+        char *val;
+
+        val = g_strdup_printf("%d", current_machine->smp.cpus);
+        object_register_sugar_prop("memory-backend", "prealloc-threads", val);
+        g_free(val);
+    }
+
     /*
      * Get the default machine options from the machine if it is not already
      * specified either by the configuration file or by the command line.
@@ -4307,7 +4313,7 @@ int main(int argc, char **argv, char **envp)
 
     if (machine_class->default_ram_id && current_machine->ram_size &&
         numa_uses_legacy_mem() && !current_machine->ram_memdev_id) {
-        create_default_memdev(current_machine, mem_path, mem_prealloc);
+        create_default_memdev(current_machine, mem_path);
     }
     /* do monitor/qmp handling at preconfig state if requested */
     main_loop();
-- 
2.18.1

[PATCH v5 77/79] hostmem: fix strict bind policy

[Igor Mammedov]

When option -mem-prealloc is used with one or more memory-backend
objects, created backends may not obey configured bind policy or
creation may fail after kernel attempts to move pages according
to bind policy.
Reason is in file_ram_alloc(), which will pre-allocate
any descriptor based RAM if global mem_prealloc != 0 and that
happens way before bind policy is applied to memory range.

One way to fix it would be to extend memory_region_foo() API
and add more invariants that could broken later due implicit
dependencies that's hard to track.

Another approach is to drop adhoc main RAM allocation and
consolidate it around memory-backend. That allows to have
single place that allocates guest RAM (main and memdev)
in the same way and then global mem_prealloc could be
replaced by backend's property[s] that will affect created
memory-backend objects but only in correct order this time.

With main RAM now converted to hostmem backends, there is no
point in keeping global mem_prealloc around, so alias
 -mem-prealloc to "memory-backend.prealloc=on"
machine compat[*] property and make mem_prealloc a local
variable to only stir registration of compat property.

*) currently user accessible -global works only with DEVICE
   based objects and extra work is needed to make it work
   with hostmem backends. But that is convenience option
   and out of scope of this already huge refactoring.
   Hence machine compat properties were used.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
v3:
  - use object_register_sugar_prop() instead of directly hacking
        compat_props (Paolo Bonzini <pbonzini@redhat.com>)

CC: pbonzini@redhat.com
CC: ehabkost@redhat.com
CC: rth@twiddle.net
CC: pasic@linux.ibm.com
---
 include/sysemu/hostmem.h |  2 +-
 include/sysemu/sysemu.h  |  1 -
 backends/hostmem-file.c  |  1 -
 backends/hostmem-memfd.c |  1 -
 backends/hostmem.c       | 12 +-----------
 exec.c                   | 11 -----------
 vl.c                     |  3 ++-
 7 files changed, 4 insertions(+), 27 deletions(-)

diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h
index bdf86665ab..8276e53683 100644
--- a/include/sysemu/hostmem.h
+++ b/include/sysemu/hostmem.h
@@ -70,7 +70,7 @@ struct HostMemoryBackend {
     /* protected */
     uint64_t size;
     bool merge, dump, use_canonical_path;
-    bool prealloc, force_prealloc, is_mapped, share;
+    bool prealloc, is_mapped, share;
     uint32_t prealloc_threads;
     DECLARE_BITMAP(host_nodes, MAX_NODES + 1);
     HostMemPolicy policy;
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index ae78b2a122..55bdd57a9b 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -50,7 +50,6 @@ extern uint8_t *boot_splash_filedata;
 extern bool enable_mlock;
 extern bool enable_cpu_pm;
 extern QEMUClockType rtc_clock;
-extern int mem_prealloc;
 
 #define MAX_OPTION_ROMS 16
 typedef struct QEMUOptionRom {
diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index cb319a9157..c8c355f5aa 100644
--- a/backends/hostmem-file.c
+++ b/backends/hostmem-file.c
@@ -51,7 +51,6 @@ file_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
         return;
     }
 
-    backend->force_prealloc = mem_prealloc;
     name = host_memory_backend_get_name(backend);
     memory_region_init_ram_from_file(&backend->mr, OBJECT(backend),
                                      name,
diff --git a/backends/hostmem-memfd.c b/backends/hostmem-memfd.c
index 26070b425e..74ba9879c4 100644
--- a/backends/hostmem-memfd.c
+++ b/backends/hostmem-memfd.c
@@ -45,7 +45,6 @@ memfd_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
         return;
     }
 
-    backend->force_prealloc = mem_prealloc;
     fd = qemu_memfd_create(TYPE_MEMORY_BACKEND_MEMFD, backend->size,
                            m->hugetlb, m->hugetlbsize, m->seal ?
                            F_SEAL_GROW | F_SEAL_SHRINK | F_SEAL_SEAL : 0,
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 0988986016..a70867b255 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -215,7 +215,7 @@ static bool host_memory_backend_get_prealloc(Object *obj, Error **errp)
 {
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
 
-    return backend->prealloc || backend->force_prealloc;
+    return backend->prealloc;
 }
 
 static void host_memory_backend_set_prealloc(Object *obj, bool value,
@@ -224,14 +224,6 @@ static void host_memory_backend_set_prealloc(Object *obj, bool value,
     Error *local_err = NULL;
     HostMemoryBackend *backend = MEMORY_BACKEND(obj);
 
-    if (backend->force_prealloc) {
-        if (value) {
-            error_setg(errp,
-                       "remove -mem-prealloc to use the prealloc property");
-            return;
-        }
-    }
-
     if (!host_memory_backend_mr_inited(backend)) {
         backend->prealloc = value;
         return;
@@ -288,8 +280,6 @@ static void host_memory_backend_init(Object *obj)
     /* TODO: convert access to globals to compat properties */
     backend->merge = machine_mem_merge(machine);
     backend->dump = machine_dump_guest_core(machine);
-    backend->prealloc = mem_prealloc;
-    backend->prealloc_threads = 1;
 }
 
 static void host_memory_backend_post_init(Object *obj)
diff --git a/exec.c b/exec.c
index 6ebff8bd3a..8c0258a7ae 100644
--- a/exec.c
+++ b/exec.c
@@ -1801,8 +1801,6 @@ static void *file_ram_alloc(RAMBlock *block,
                             bool truncate,
                             Error **errp)
 {
-    Error *err = NULL;
-    MachineState *ms = MACHINE(qdev_get_machine());
     void *area;
 
     block->page_size = qemu_fd_getpagesize(fd);
@@ -1858,15 +1856,6 @@ static void *file_ram_alloc(RAMBlock *block,
         return NULL;
     }
 
-    if (mem_prealloc) {
-        os_mem_prealloc(fd, area, memory, ms->smp.cpus, &err);
-        if (err) {
-            error_propagate(errp, err);
-            qemu_ram_munmap(fd, area, memory);
-            return NULL;
-        }
-    }
-
     block->fd = fd;
     return area;
 }
diff --git a/vl.c b/vl.c
index afc682e168..54857f7afa 100644
--- a/vl.c
+++ b/vl.c
@@ -140,7 +140,6 @@ enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
 int display_opengl;
 const char* keyboard_layout = NULL;
 ram_addr_t ram_size;
-int mem_prealloc = 0; /* force preallocation of physical target memory */
 bool enable_mlock = false;
 bool enable_cpu_pm = false;
 int nb_nics;
@@ -2883,6 +2882,7 @@ int main(int argc, char **argv, char **envp)
     const char *mem_path = NULL;
     BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
     QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
+    int mem_prealloc = 0; /* force preallocation of physical target memory */
 
     os_set_line_buffering();
 
@@ -3984,6 +3984,7 @@ int main(int argc, char **argv, char **envp)
         val = g_strdup_printf("%d", current_machine->smp.cpus);
         object_register_sugar_prop("memory-backend", "prealloc-threads", val);
         g_free(val);
+        object_register_sugar_prop("memory-backend", "prealloc", "on");
     }
 
     /*
-- 
2.18.1

[PATCH v5 78/79] tests/numa-test: make top level args dynamic and g_autofree(cli) cleanups

[Igor Mammedov]

Use GString to pass argument to make_cli() so that it would be easy
to dynamically change test case arguments from main(). The follow up
patch will use it to change RAM size options depending on target.

While at it cleanup 'cli' freeing, using g_autofree annotation.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
v3:
  * s/strcmp/g_str_equal/
    (Thomas Huth <thuth@redhat.com>)
  * use pair make_cli/qtest_init instead of qtest_initf
PS:
  made as a separate patch so it won't clutter followup testcase changes.
v4:
  * use g_string_new(NULL) instead of g_string_new("")
    (Thomas Huth <thuth@redhat.com>)
---
 tests/qtest/numa-test.c | 108 ++++++++++++++++++++--------------------
 1 file changed, 54 insertions(+), 54 deletions(-)

diff --git a/tests/qtest/numa-test.c b/tests/qtest/numa-test.c
index 17dd807d2a..35999ea28f 100644
--- a/tests/qtest/numa-test.c
+++ b/tests/qtest/numa-test.c
@@ -14,16 +14,16 @@
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qlist.h"
 
-static char *make_cli(const char *generic_cli, const char *test_cli)
+static char *make_cli(const GString *generic_cli, const char *test_cli)
 {
-    return g_strdup_printf("%s %s", generic_cli ? generic_cli : "", test_cli);
+    return g_strdup_printf("%s %s", generic_cli->str, test_cli);
 }
 
 static void test_mon_explicit(const void *data)
 {
-    char *s;
-    char *cli;
     QTestState *qts;
+    g_autofree char *s = NULL;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 8 "
                    "-numa node,nodeid=0,cpus=0-3 "
@@ -33,17 +33,15 @@ static void test_mon_explicit(const void *data)
     s = qtest_hmp(qts, "info numa");
     g_assert(strstr(s, "node 0 cpus: 0 1 2 3"));
     g_assert(strstr(s, "node 1 cpus: 4 5 6 7"));
-    g_free(s);
 
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void test_mon_default(const void *data)
 {
-    char *s;
-    char *cli;
     QTestState *qts;
+    g_autofree char *s = NULL;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 8 -numa node -numa node");
     qts = qtest_init(cli);
@@ -51,17 +49,15 @@ static void test_mon_default(const void *data)
     s = qtest_hmp(qts, "info numa");
     g_assert(strstr(s, "node 0 cpus: 0 2 4 6"));
     g_assert(strstr(s, "node 1 cpus: 1 3 5 7"));
-    g_free(s);
 
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void test_mon_partial(const void *data)
 {
-    char *s;
-    char *cli;
     QTestState *qts;
+    g_autofree char *s = NULL;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 8 "
                    "-numa node,nodeid=0,cpus=0-1 "
@@ -71,10 +67,8 @@ static void test_mon_partial(const void *data)
     s = qtest_hmp(qts, "info numa");
     g_assert(strstr(s, "node 0 cpus: 0 1 2 3 6 7"));
     g_assert(strstr(s, "node 1 cpus: 4 5"));
-    g_free(s);
 
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static QList *get_cpus(QTestState *qts, QDict **resp)
@@ -87,11 +81,11 @@ static QList *get_cpus(QTestState *qts, QDict **resp)
 
 static void test_query_cpus(const void *data)
 {
-    char *cli;
     QDict *resp;
     QList *cpus;
     QObject *e;
     QTestState *qts;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 8 -numa node,cpus=0-3 -numa node,cpus=4-7");
     qts = qtest_init(cli);
@@ -120,16 +114,15 @@ static void test_query_cpus(const void *data)
 
     qobject_unref(resp);
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void pc_numa_cpu(const void *data)
 {
-    char *cli;
     QDict *resp;
     QList *cpus;
     QObject *e;
     QTestState *qts;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-cpu pentium -smp 8,sockets=2,cores=2,threads=2 "
         "-numa node,nodeid=0 -numa node,nodeid=1 "
@@ -174,16 +167,15 @@ static void pc_numa_cpu(const void *data)
 
     qobject_unref(resp);
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void spapr_numa_cpu(const void *data)
 {
-    char *cli;
     QDict *resp;
     QList *cpus;
     QObject *e;
     QTestState *qts;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 4,cores=4 "
         "-numa node,nodeid=0 -numa node,nodeid=1 "
@@ -220,16 +212,15 @@ static void spapr_numa_cpu(const void *data)
 
     qobject_unref(resp);
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void aarch64_numa_cpu(const void *data)
 {
-    char *cli;
     QDict *resp;
     QList *cpus;
     QObject *e;
     QTestState *qts;
+    g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 2 "
         "-numa node,nodeid=0 -numa node,nodeid=1 "
@@ -264,7 +255,6 @@ static void aarch64_numa_cpu(const void *data)
 
     qobject_unref(resp);
     qtest_quit(qts);
-    g_free(cli);
 }
 
 static void pc_dynamic_cpu_cfg(const void *data)
@@ -273,9 +263,10 @@ static void pc_dynamic_cpu_cfg(const void *data)
     QDict *resp;
     QList *cpus;
     QTestState *qs;
+    g_autofree char *cli = NULL;
 
-    qs = qtest_initf("%s -nodefaults --preconfig -smp 2",
-                     data ? (char *)data : "");
+    cli = make_cli(data, "-nodefaults --preconfig -smp 2");
+    qs = qtest_init(cli);
 
     /* create 2 numa nodes */
     g_assert(!qmp_rsp_is_err(qtest_qmp(qs, "{ 'execute': 'set-numa-node',"
@@ -329,16 +320,19 @@ static void pc_dynamic_cpu_cfg(const void *data)
 
 static void pc_hmat_build_cfg(const void *data)
 {
-    QTestState *qs = qtest_initf("%s -nodefaults --preconfig -machine hmat=on "
-                     "-smp 2,sockets=2 "
-                     "-m 128M,slots=2,maxmem=1G "
-                     "-object memory-backend-ram,size=64M,id=m0 "
-                     "-object memory-backend-ram,size=64M,id=m1 "
-                     "-numa node,nodeid=0,memdev=m0 "
-                     "-numa node,nodeid=1,memdev=m1,initiator=0 "
-                     "-numa cpu,node-id=0,socket-id=0 "
-                     "-numa cpu,node-id=0,socket-id=1",
-                     data ? (char *)data : "");
+    QTestState *qs;
+    g_autofree char *cli = NULL;
+
+    cli = make_cli(data, "-nodefaults --preconfig -machine hmat=on "
+                         "-smp 2,sockets=2 "
+                         "-m 128M,slots=2,maxmem=1G "
+                         "-object memory-backend-ram,size=64M,id=m0 "
+                         "-object memory-backend-ram,size=64M,id=m1 "
+                         "-numa node,nodeid=0,memdev=m0 "
+                         "-numa node,nodeid=1,memdev=m1,initiator=0 "
+                         "-numa cpu,node-id=0,socket-id=0 "
+                         "-numa cpu,node-id=0,socket-id=1");
+    qs = qtest_init(cli);
 
     /* Fail: Initiator should be less than the number of nodes */
     g_assert_true(qmp_rsp_is_err(qtest_qmp(qs, "{ 'execute': 'set-numa-node',"
@@ -455,13 +449,16 @@ static void pc_hmat_build_cfg(const void *data)
 
 static void pc_hmat_off_cfg(const void *data)
 {
-    QTestState *qs = qtest_initf("%s -nodefaults --preconfig "
-                     "-smp 2,sockets=2 "
-                     "-m 128M,slots=2,maxmem=1G "
-                     "-object memory-backend-ram,size=64M,id=m0 "
-                     "-object memory-backend-ram,size=64M,id=m1 "
-                     "-numa node,nodeid=0,memdev=m0",
-                     data ? (char *)data : "");
+    QTestState *qs;
+    g_autofree char *cli = NULL;
+
+    cli = make_cli(data, "-nodefaults --preconfig "
+                         "-smp 2,sockets=2 "
+                         "-m 128M,slots=2,maxmem=1G "
+                         "-object memory-backend-ram,size=64M,id=m0 "
+                         "-object memory-backend-ram,size=64M,id=m1 "
+                         "-numa node,nodeid=0,memdev=m0");
+    qs = qtest_init(cli);
 
     /*
      * Fail: Enable HMAT with -machine hmat=on
@@ -491,16 +488,19 @@ static void pc_hmat_off_cfg(const void *data)
 
 static void pc_hmat_erange_cfg(const void *data)
 {
-    QTestState *qs = qtest_initf("%s -nodefaults --preconfig -machine hmat=on "
-                     "-smp 2,sockets=2 "
-                     "-m 128M,slots=2,maxmem=1G "
-                     "-object memory-backend-ram,size=64M,id=m0 "
-                     "-object memory-backend-ram,size=64M,id=m1 "
-                     "-numa node,nodeid=0,memdev=m0 "
-                     "-numa node,nodeid=1,memdev=m1,initiator=0 "
-                     "-numa cpu,node-id=0,socket-id=0 "
-                     "-numa cpu,node-id=0,socket-id=1",
-                     data ? (char *)data : "");
+    QTestState *qs;
+    g_autofree char *cli = NULL;
+
+    cli = make_cli(data, "-nodefaults --preconfig -machine hmat=on "
+                         "-smp 2,sockets=2 "
+                         "-m 128M,slots=2,maxmem=1G "
+                         "-object memory-backend-ram,size=64M,id=m0 "
+                         "-object memory-backend-ram,size=64M,id=m1 "
+                         "-numa node,nodeid=0,memdev=m0 "
+                         "-numa node,nodeid=1,memdev=m1,initiator=0 "
+                         "-numa cpu,node-id=0,socket-id=0 "
+                         "-numa cpu,node-id=0,socket-id=1");
+    qs = qtest_init(cli);
 
     /* Can't store the compressed latency */
     g_assert_false(qmp_rsp_is_err(qtest_qmp(qs, "{ 'execute': 'set-numa-node',"
@@ -539,11 +539,11 @@ static void pc_hmat_erange_cfg(const void *data)
 
 int main(int argc, char **argv)
 {
-    const char *args = NULL;
+    g_autoptr(GString) args = g_string_new(NULL);
     const char *arch = qtest_get_arch();
 
-    if (strcmp(arch, "aarch64") == 0) {
-        args = "-machine virt";
+    if (g_str_equal(arch, "aarch64")) {
+        g_string_append(args, " -machine virt");
     }
 
     g_test_init(&argc, &argv, NULL);
-- 
2.18.1

[PATCH v5 79/79] tests:numa-test: use explicit memdev to specify node RAM

[Igor Mammedov]

Follow up patches will remove automatic RAM distribution
between nodes and will make default machine types require
"memdev" option instead of legacy "mem" option.

Make tests to follow new rules and add an additional test
for legacy "mem" option on old machine type, to make sure
it won't regress in the future.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
---
v3:
   * s/strcmp/g_str_equal/
   * put -object lines before -m
     (Thomas Huth <thuth@redhat.com>)
   * drop new test_pc_legacy_mem(), due to dropping
      "numa: forbid '-numa node,mem' for 5.0 and newer machine types"
     it will be posted later, when libvirt side is prepared for
     disabled '-numa node,mem' (hopefully 5.1)
---
 tests/qtest/numa-test.c | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/tests/qtest/numa-test.c b/tests/qtest/numa-test.c
index 35999ea28f..2f9b7f663a 100644
--- a/tests/qtest/numa-test.c
+++ b/tests/qtest/numa-test.c
@@ -25,9 +25,8 @@ static void test_mon_explicit(const void *data)
     g_autofree char *s = NULL;
     g_autofree char *cli = NULL;
 
-    cli = make_cli(data, "-smp 8 "
-                   "-numa node,nodeid=0,cpus=0-3 "
-                   "-numa node,nodeid=1,cpus=4-7 ");
+    cli = make_cli(data, "-smp 8 -numa node,nodeid=0,memdev=ram,cpus=0-3 "
+                         "-numa node,nodeid=1,cpus=4-7");
     qts = qtest_init(cli);
 
     s = qtest_hmp(qts, "info numa");
@@ -37,13 +36,13 @@ static void test_mon_explicit(const void *data)
     qtest_quit(qts);
 }
 
-static void test_mon_default(const void *data)
+static void test_def_cpu_split(const void *data)
 {
     QTestState *qts;
     g_autofree char *s = NULL;
     g_autofree char *cli = NULL;
 
-    cli = make_cli(data, "-smp 8 -numa node -numa node");
+    cli = make_cli(data, "-smp 8 -numa node,memdev=ram -numa node");
     qts = qtest_init(cli);
 
     s = qtest_hmp(qts, "info numa");
@@ -60,7 +59,7 @@ static void test_mon_partial(const void *data)
     g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 8 "
-                   "-numa node,nodeid=0,cpus=0-1 "
+                   "-numa node,nodeid=0,memdev=ram,cpus=0-1 "
                    "-numa node,nodeid=1,cpus=4-5 ");
     qts = qtest_init(cli);
 
@@ -87,7 +86,8 @@ static void test_query_cpus(const void *data)
     QTestState *qts;
     g_autofree char *cli = NULL;
 
-    cli = make_cli(data, "-smp 8 -numa node,cpus=0-3 -numa node,cpus=4-7");
+    cli = make_cli(data, "-smp 8 -numa node,memdev=ram,cpus=0-3 "
+                         "-numa node,cpus=4-7");
     qts = qtest_init(cli);
     cpus = get_cpus(qts, &resp);
     g_assert(cpus);
@@ -125,7 +125,7 @@ static void pc_numa_cpu(const void *data)
     g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-cpu pentium -smp 8,sockets=2,cores=2,threads=2 "
-        "-numa node,nodeid=0 -numa node,nodeid=1 "
+        "-numa node,nodeid=0,memdev=ram -numa node,nodeid=1 "
         "-numa cpu,node-id=1,socket-id=0 "
         "-numa cpu,node-id=0,socket-id=1,core-id=0 "
         "-numa cpu,node-id=0,socket-id=1,core-id=1,thread-id=0 "
@@ -178,7 +178,7 @@ static void spapr_numa_cpu(const void *data)
     g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 4,cores=4 "
-        "-numa node,nodeid=0 -numa node,nodeid=1 "
+        "-numa node,nodeid=0,memdev=ram -numa node,nodeid=1 "
         "-numa cpu,node-id=0,core-id=0 "
         "-numa cpu,node-id=0,core-id=1 "
         "-numa cpu,node-id=0,core-id=2 "
@@ -223,7 +223,7 @@ static void aarch64_numa_cpu(const void *data)
     g_autofree char *cli = NULL;
 
     cli = make_cli(data, "-smp 2 "
-        "-numa node,nodeid=0 -numa node,nodeid=1 "
+        "-numa node,nodeid=0,memdev=ram -numa node,nodeid=1 "
         "-numa cpu,node-id=1,thread-id=0 "
         "-numa cpu,node-id=0,thread-id=1");
     qts = qtest_init(cli);
@@ -270,7 +270,7 @@ static void pc_dynamic_cpu_cfg(const void *data)
 
     /* create 2 numa nodes */
     g_assert(!qmp_rsp_is_err(qtest_qmp(qs, "{ 'execute': 'set-numa-node',"
-        " 'arguments': { 'type': 'node', 'nodeid': 0 } }")));
+        " 'arguments': { 'type': 'node', 'nodeid': 0, 'memdev': 'ram' } }")));
     g_assert(!qmp_rsp_is_err(qtest_qmp(qs, "{ 'execute': 'set-numa-node',"
         " 'arguments': { 'type': 'node', 'nodeid': 1 } }")));
 
@@ -542,13 +542,19 @@ int main(int argc, char **argv)
     g_autoptr(GString) args = g_string_new(NULL);
     const char *arch = qtest_get_arch();
 
+    if (g_str_equal(arch, "ppc64")) {
+        g_string_append(args, " -object memory-backend-ram,id=ram,size=512M");
+    } else {
+        g_string_append(args, " -object memory-backend-ram,id=ram,size=128M");
+    }
+
     if (g_str_equal(arch, "aarch64")) {
         g_string_append(args, " -machine virt");
     }
 
     g_test_init(&argc, &argv, NULL);
 
-    qtest_add_data_func("/numa/mon/default", args, test_mon_default);
+    qtest_add_data_func("/numa/mon/cpus/default", args, test_def_cpu_split);
     qtest_add_data_func("/numa/mon/cpus/explicit", args, test_mon_explicit);
     qtest_add_data_func("/numa/mon/cpus/partial", args, test_mon_partial);
     qtest_add_data_func("/numa/qmp/cpus/query-cpus", args, test_query_cpus);
-- 
2.18.1

Re: [PATCH v5 29/79] arm/raspi: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>      MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
> CC: Andrew.Baumann@microsoft.com
> CC: philmd@redhat.com
> 
> v5:
>        * fixed rebase conflicts once more
> v4:
>        * fixed rebase conflicts
> ---
>   hw/arm/raspi.c | 10 ++++------
>   1 file changed, 4 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/arm/raspi.c b/hw/arm/raspi.c
> index 90ad9b8115..acd2bb794d 100644
> --- a/hw/arm/raspi.c
> +++ b/hw/arm/raspi.c
> @@ -39,7 +39,6 @@ typedef struct RaspiMachineState {
>       MachineState parent_obj;
>       /*< public >*/
>       BCM283XState soc;
> -    MemoryRegion ram;
>   } RaspiMachineState;
>   
>   typedef struct RaspiMachineClass {
> @@ -277,16 +276,14 @@ static void raspi_machine_init(MachineState *machine)
>           exit(1);
>       }
>   
> -    /* Allocate and map RAM */
> -    memory_region_allocate_system_memory(&s->ram, OBJECT(machine), "ram",
> -                                         machine->ram_size);
>       /* FIXME: Remove when we have custom CPU address space support */
> -    memory_region_add_subregion_overlap(get_system_memory(), 0, &s->ram, 0);
> +    memory_region_add_subregion_overlap(get_system_memory(), 0,
> +                                        machine->ram, 0);
>   
>       /* Setup the SOC */
>       object_initialize_child(OBJECT(machine), "soc", &s->soc, sizeof(s->soc),
>                               board_soc_type(board_rev), &error_abort, NULL);
> -    object_property_add_const_link(OBJECT(&s->soc), "ram", OBJECT(&s->ram),
> +    object_property_add_const_link(OBJECT(&s->soc), "ram", OBJECT(machine->ram),
>                                      &error_abort);
>       object_property_set_int(OBJECT(&s->soc), board_rev, "board-rev",
>                               &error_abort);
> @@ -324,6 +321,7 @@ static void raspi_machine_class_init(ObjectClass *oc, void *data)
>       mc->no_cdrom = 1;
>       mc->default_cpus = mc->min_cpus = mc->max_cpus = cores_count(board_rev);
>       mc->default_ram_size = board_ram_size(board_rev);
> +    mc->default_ram_id = "ram";
>       if (board_version(board_rev) == 2) {
>           mc->ignore_memory_transaction_failures = true;
>       }
> 

Re: [PATCH v5 41/79] hppa: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: rth@twiddle.net
> CC: deller@gmx.de
> ---
>  hw/hppa/machine.c | 10 +++-------
>  1 file changed, 3 insertions(+), 7 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 72/79] remove no longer used memory_region_allocate_system_memory()

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> all boards were switched to using memdev backend for main RAM,
> so we can drop no longer used memory_region_allocate_system_memory()
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: ehabkost@redhat.com
> CC: pbonzini@redhat.com
> ---
>  include/hw/boards.h | 32 --------------------------------
>  hw/core/numa.c      | 34 ----------------------------------
>  2 files changed, 66 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 73/79] exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize()

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> Since all RAM is backed by hostmem backends, drop
> global -mem-path invariant and simplify code.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> ---
> v4:
>   * fix access to uninitialized pagesize/hpsize
>     (David Gibson <david@gibson.dropbear.id.au>)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 74/79] exec: drop bogus mem_path from qemu_ram_alloc_from_fd()

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> Function will report error that will mention global mem_path,
> which was valid the only if legacy -mem-path was used and
> only in case of main RAM.
> 
> However it doesn't work with hostmem backends
> (for example:
> "
>   qemu: -object memory-backend-file,id=ram0,size=128M,mem-path=foo:
>     backing store (null) size 0x200000 does not match 'size' option 0x8000000
> ")
> and couldn't possibly work in general FD case the function
> is supposed to handle.
> 
> Taking in account that main RAM was converted into
> memory-backend-foo object, there is no point in printing
> file name (from inappropriate place) as failing path is
> a part of backend's error message.
> 
> Hence drop bogus mem_path usage from qemu_ram_alloc_from_fd(),
> it's a job of its user to add file name to error message if applicable.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  exec.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 75/79] make mem_path local variable

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> It's no longer used anywhere beside main(),
> so make it local variable that is used for CLI compat
> purposes to keep -mem-path option working.
> 
> Under hood QEMU will use it to create
>   memory-backend-file,mem-path=...
> backend and use its MemoryRegion as main RAM.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: pbonzini@redhat.com
> ---
>  include/sysemu/sysemu.h | 1 -
>  vl.c                    | 2 +-
>  2 files changed, 1 insertion(+), 2 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 01/79] numa: remove deprecated -mem-path fallback to anonymous RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> it has been deprecated since 4.0 by commit
>  cb79224b7 (deprecate -mem-path fallback to anonymous RAM)
> Deprecation period ran out and it's time to remove it
> so it won't get in a way of switching to using hostmem
> backend for RAM.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC:libvir-list@redhat.com
> CC: ehabkost@redhat.com
> ---
>  hw/core/numa.c       | 18 +-----------------
>  qemu-deprecated.texi |  9 ---------
>  2 files changed, 1 insertion(+), 26 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 02/79] machine: introduce memory-backend property

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> Property will contain link to memory backend that will be
> used for backing initial RAM.
> Follow up commit will alias -mem-path and -mem-prealloc
> CLI options into memory backend options to make memory
> handling consistent (using only hostmem backend family
> for guest RAM allocation).
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v4:
>  * make property a string, instead of a link.
>    Fixes -M memory-backend=foo: foo not found error
>    since foo creation is delayed well beyond point
>    where machine's properties are set
> v3:
>  * rename property name from ram-memdev to memory-backend
>    (Paolo Bonzini <pbonzini@redhat.com>)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 04/79] machine: introduce convenience MachineState::ram

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> the new field will be used by boards to get access to main
> RAM memory region and will help to save boiler plate in
> boards which often introduce a field or variable just for
> this purpose.
> 
> Memory region will be equivalent to what currently used
> memory_region_allocate_system_memory() is returning apart
> from that it will come from hostmem backend.
> Followup patches will incrementally switch boards to using
> RAM from MachineState::ram.
> 
> Patch takes care of non-NUMA case and follow up patch will
> initialize MachineState::ram for NUMA case.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 07/79] vl.c: ensure that ram_size matches size of machine.memory-backend

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> Extend set_memory_options() to check that size specified by -m
> matches the size of backend pointed by memory-backend.
> And in case of -m was omitted adjust ram_size to match that
> of explicitly provided backend.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 09/79] arm/aspeed: actually check RAM size

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> It's supposed that SOC will check if "-m" provided
> RAM size is valid by setting "ram-size" property and
> then board would read back valid (possibly corrected
> value) to map RAM MemoryReging with valid size.
> It isn't doing so, since check is called only
> indirectly from
>   aspeed_sdmc_reset()->asc->compute_conf()
> or much later when guest writes to configuration
> register.
> 
> So depending on "-m" value QEMU end-ups with a warning
> and an invalid MemoryRegion size allocated and mapped.
> (examples:
>  -M ast2500-evb -m 1M
>     0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container
>       0000000080000000-00000000800fffff (prio 0, ram): ram
>       0000000080100000-00000000bfffffff (prio 0, i/o): max_ram
>  -M ast2500-evb -m 3G
>     0000000080000000-000000017ffffffe (prio 0, i/o): aspeed-ram-container
>       0000000080000000-000000013fffffff (prio 0, ram): ram
>       [DETECTED OVERFLOW!] 0000000140000000-00000000bfffffff (prio 0, i/o): max_ram
> )
> On top of that sdmc falls back and reports to guest
> "default" size, it thinks machine should have.
> 
> This patch makes ram-size check actually work and
> changes behavior from a warning later on during
> machine reset to error_fatal at the moment SOC.ram-size
> is set so user will have to fix RAM size on CLI
> to start machine.
> 
> It also gets out of the way mutable ram-size logic,
> so we could consolidate RAM allocation logic around
> pre-allocated hostmem backend (supplied by user or
> auto created by generic machine code depending on
> supplied -m/mem-path/mem-prealloc options.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> ---
> v3:
>   * replace
>      [PATCH v2 07/86] arm:aspeed: convert valid RAM sizes to data
>      [PATCH v2 08/86] arm:aspeed: actually check RAM size
>     with a simplified variant that adds ram_size check to sdmc.ram-size
>     property
>   * use g_assert_not_reached() in default branch
>     (Cédric Le Goater <clg@kaod.org>)
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 10/79] arm/aspeed: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> Acked-by: Joel Stanley <joel@jms.id.au>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 11/79] arm/collie: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  - while at it add check for user supplied RAM size and error
>    out if it mismatches board expected value.
>  - introduce RAM_ADDR_UFMT to avoid build errors on 32-bit hosts
>    when specifying format string for ram_addr_t type
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>   * fix format string causing build failure on 32-bit host
>     (Philippe Mathieu-Daudé <philmd@redhat.com>)
> v3:
>   * instead of RAM_ADDR_UFMT adding use size_to_str()
>      Philippe Mathieu-Daudé <philmd@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 12/79] arm/cubieboard: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
> While at it, get rid of no longer needed CubieBoardState wrapper.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 13/79] arm/digic_boards: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  remove no longer needed DigicBoardState
> 
> PS2:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v3:
>   * move 'DigicState *s' declaration to the top of digic4_board_init()
> v2:
>   * fix format string causing build failure on 32-bit host
>     (Philippe Mathieu-Daudé <philmd@redhat.com>)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 14/79] arm/highbank: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 15/79] arm/imx25_pdk: drop RAM size fixup

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
>      /* We need to initialize our memory */
>      if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
> -        warn_report("RAM size " RAM_ADDR_FMT " above max supported, "
> +        error_report("RAM size " RAM_ADDR_FMT " above max supported, "
>                      "reduced to %x", machine->ram_size,
>                      FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE);
> -        machine->ram_size = FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE;
> +        exit(EXIT_FAILURE);

The wording here doesn't make sense anymore.
I think it would be better to mirror that used elsewhere:

+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);

With that,
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 16/79] arm/imx25_pdk: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 18/79] arm/kzm: drop RAM size fixup

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> If the user provided too large a RAM size, the code used to
> complain and trim it to the max size.  Now that RAM is allocated by
> generic code, that's no longer possible, so generate an error and
> exit instead.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Peter Chubb <peter.chubb@data61.csiro.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 19/79] arm/kzm: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Peter Chubb <peter.chubb@data61.csiro.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 20/79] arm/mcimx6ul-evk: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   remove no longer needed MCIMX6ULEVK
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 21/79] arm/mcimx7d-sabre: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  remove no longer needed MCIMX7Sabre
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 22/79] arm/mps2-tz: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 23/79] arm/mps2: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 24/79] arm/musicpal: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

> @@ -1589,16 +1590,21 @@ static void musicpal_init(MachineState *machine)
>      int i;
>      unsigned long flash_size;
>      DriveInfo *dinfo;
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>      MemoryRegion *address_space_mem = get_system_memory();
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>      MemoryRegion *sram = g_new(MemoryRegion, 1);
>  
> +    /* For now we use a fixed - the original - RAM size */
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }

If for some reason you need to re-spin this series again, and considering my
comment re arm/imx25_pdk, I think it would be worthwhile to create a common
helper for this:

void machine_memory_check_fixed_size(MachineState *machine)
{
    MachineClass *mc = MACHINE_GET_CLASS(machine);

    if (machine->ram_size != mc->default_ram_size) {
        char *sz = size_to_str(mc->default_ram_size);
        error_report("Invalid RAM size, should be %s", sz);
        g_free(sz);
        exit(EXIT_FAILURE);
    }
}

That would keep the language consistent across the boards.


r~

Re: [PATCH v5 25/79] arm/nseries: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 26/79] arm/omap_sx1: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:33 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 27/79] arm/palm: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 28/79] arm/sabrelite: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  remove no longer needed IMX6Sabrelite
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 29/79] arm/raspi: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>     MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 30/79] arm/sbsa-ref: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 31/79] arm/versatilepb: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 32/79] arm/vexpress: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 33/79] arm/virt: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away,
> so replace it with memdev allocated MemoryRegion.
> The later is initialized by generic code, so board only
> needs to opt in to memdev scheme by providing
>   MachineClass::default_ram_id
> and then map memory region provided by
>   MachineState::ram_memdev
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 34/79] arm/xilinx_zynq: drop RAM size fixup

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> If user provided non-sense RAM size, board will complain and
> continue running with max RAM size supported.
> Also RAM is going to be allocated by generic code, so it won't be
> possible for board to fix things up for user.
> 
> Make it error message and exit to force user fix CLI,
> instead of accepting non-sense CLI values.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

> +    /* max 2GB ram */
> +    if (machine->ram_size > 0x80000000) {
> +        error_report("RAM size more than %d is not supported", 0x80000000);
> +        exit(EXIT_FAILURE);
> +    }

If you have occasion to re-spin, I think that a common function like

void machine_memory_check_max_size(MachineState *machine,
                                   ram_addr_t max);

akin to the machine_memory_check_fixed_size I proposed earlier, would help keep
the language consistent across the boards.


r~

Re: [PATCH v5 35/79] arm/xilinx_zynq: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 36/79] arm/xlnx-versal-virt: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 37/79] arm/xlnx-zcu102: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 38/79] s390x/s390-virtio-ccw: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Acked-by: Cornelia Huck <cohuck@redhat.com>
> Tested-by: Halil Pasic <pasic@linux.ibm.com>
> Acked-by: Halil Pasic <pasic@linux.ibm.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 39/79] null-machine: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 40/79] cris/axis_dev88: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 42/79] x86/microvm: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 43/79] x86/pc: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 44/79] lm32/lm32_boards: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 45/79] lm32/milkymist: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>  while at it add check for user supplied RAM size and error
>  out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 46/79] m68k/an5206: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 47/79] m68k/q800: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> Switch to using generic main RAM allocation. To do this set
> MachineClass::default_ram_id to m68k_mac.ram and use
> MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Laurent Vivier <laurent@vivier.eu>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 48/79] m68k/mcf5208: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 49/79] m68k/next-cube: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 58/79] ppc/e500: drop RAM size fixup

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> If user provided non-sense RAM size, board will complain and
> continue running with max RAM size supported.
> Also RAM is going to be allocated by generic code, so it won't be
> possible for board to fix things up for user.
> 
> Make it error message and exit to force user fix CLI,
> instead of accepting non-sense CLI values.
> 
> While at it, replace usage of global ram_size with
> machine->ram_size
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 59/79] ppc/e500: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 60/79] ppc/mac_newworld: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 61/79] ppc/mac_oldworld: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 62/79] ppc/pnv: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> Reviewed-by: Cédric Le Goater <clg@kaod.org>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 63/79] ppc/ppc405_boards: add RAM size checks

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> If user provided non-sense RAM size, board will ignore it
> and continue running with fixed RAM size.
> 
> Also RAM is going to be allocated by generic code, so it
> won't be possible for board to fix CLI.
> 
> Make it error message and exit to force user fix CLI,
> instead of accepting non-sense CLI values.
> 
> PS:
> move fixed RAM size into mc->default_ram_size, so that
> generic code will know how much to allocate.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 64/79] ppc/ppc405_boards: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> @@ -439,18 +439,16 @@ static void taihu_405ep_init(MachineState *machine)
>          g_free(sz);
>          exit(EXIT_FAILURE);
>      }
> -    memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
> -                                         machine->ram_size);
>  
>      ram_bases[0] = 0;
>      ram_sizes[0] = 0x04000000;
>      memory_region_init_alias(&ram_memories[0], NULL,
> -                             "taihu_405ep.ram-0", ram, ram_bases[0],
> +                             "taihu_405ep.ram-0", machine->ram, ram_bases[0],
>                               ram_sizes[0]);
>      ram_bases[1] = 0x04000000;
>      ram_sizes[1] = 0x04000000;
>      memory_region_init_alias(&ram_memories[1], NULL,
> -                             "taihu_405ep.ram-1", ram, ram_bases[1],
> +                             "taihu_405ep.ram-1", machine->ram, ram_bases[1],
>                               ram_sizes[1]);
>      ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
>                    33333333, &pic, kernel_filename == NULL ? 0 : 1);
> @@ -546,6 +544,7 @@ static void taihu_class_init(ObjectClass *oc, void *data)
>      mc->desc = "taihu";
>      mc->init = taihu_405ep_init;
>      mc->default_ram_size = 0x08000000;
> +    mc->default_ram_id = "ef405ep.ram";

Cut and paste error on the ram name.

Otherwise,
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 67/79] ppc/spapr: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 68/79] ppc/virtex_ml507: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 69/79] sparc/leon3: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 71/79] sparc/niagara: use memdev for RAM

[Richard Henderson]

On 2/17/20 9:34 AM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>   MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Re: [PATCH v5 00/79] refactor main RAM allocation to use hostmem backend

[no-reply]

Patchew URL: https://patchew.org/QEMU/20200217173452.15243-1-imammedo@redhat.com/



Hi,

This series seems to have some coding style problems. See output below for
more information:

Subject: [PATCH v5 00/79] refactor main RAM allocation to use hostmem backend
Message-id: 20200217173452.15243-1-imammedo@redhat.com
Type: series

=== TEST SCRIPT BEGIN ===
#!/bin/bash
git rev-parse base > /dev/null || exit 0
git config --local diff.renamelimit 0
git config --local diff.renames True
git config --local diff.algorithm histogram
./scripts/checkpatch.pl --mailback base..
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
From https://github.com/patchew-project/qemu
 * [new tag]         patchew/20200217203734.18703-1-linux@roeck-us.net -> patchew/20200217203734.18703-1-linux@roeck-us.net
Switched to a new branch 'test'
ae79fd3 tests:numa-test: use explicit memdev to specify node RAM
06204f5 tests/numa-test: make top level args dynamic and g_autofree(cli) cleanups
9bab7ba hostmem: fix strict bind policy
f5f2826 hostmem: introduce "prealloc-threads" property
00f806c make mem_path local variable
77aa301 exec: drop bogus mem_path from qemu_ram_alloc_from_fd()
645479c exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize()
a196f36 remove no longer used memory_region_allocate_system_memory()
5b4f6c8 sparc/niagara: use memdev for RAM
232dbaf sparc/sun4m: use memdev for RAM
2703398 sparc/leon3: use memdev for RAM
bfdca1c ppc/virtex_ml507: use memdev for RAM
5d3fae5 ppc/spapr: use memdev for RAM
37756d6 ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM
d0744df ppc/{ppc440_bamboo, sam460ex}: drop RAM size fixup
4f44f1e ppc/ppc405_boards: use memdev for RAM
a4c391c ppc/ppc405_boards: add RAM size checks
902998f ppc/pnv: use memdev for RAM
50aebc5 ppc/mac_oldworld: use memdev for RAM
d1977f2 ppc/mac_newworld: use memdev for RAM
aa567e1 ppc/e500: use memdev for RAM
a018a92 ppc/e500: drop RAM size fixup
ee1f59d mips/mips_r4k: use memdev for RAM
09c5a2a mips/mips_mipssim: use memdev for RAM
5d43531 mips/mips_malta: use memdev for RAM
e074e55 mips/mips_jazz: add max ram size check
2ed9f97 mips/mips_jazz: use memdev for RAM
d84d1c8 mips/mips_fulong2e: use memdev for RAM
3e1d49c mips/mips_fulong2e: drop RAM size fixup
52f47ea mips/boston: use memdev for RAM
f5acaa4 m68k/next-cube: use memdev for RAM
b4e9f6d m68k/mcf5208: use memdev for RAM
22bba18 m68k/q800: use memdev for RAM
f59053b m68k/an5206: use memdev for RAM
4c253fe lm32/milkymist: use memdev for RAM
b5eb224 lm32/lm32_boards: use memdev for RAM
217eba8 x86/pc: use memdev for RAM
7198205 x86/microvm: use memdev for RAM
ba28142 hppa: use memdev for RAM
ef6890c cris/axis_dev88: use memdev for RAM
839e6da null-machine: use memdev for RAM
058812e s390x/s390-virtio-ccw: use memdev for RAM
f60ce98 arm/xlnx-zcu102: use memdev for RAM
7413187 arm/xlnx-versal-virt: use memdev for RAM
9dc7e1a arm/xilinx_zynq: use memdev for RAM
93ade06 arm/xilinx_zynq: drop RAM size fixup
f7a4a9d arm/virt: use memdev for RAM
6338d4a arm/vexpress: use memdev for RAM
685cef7 arm/versatilepb: use memdev for RAM
4ffead4 arm/sbsa-ref: use memdev for RAM
07020c8 arm/raspi: use memdev for RAM
d25a0f3 arm/sabrelite: use memdev for RAM
6784de1 arm/palm: use memdev for RAM
0097fd0 arm/omap_sx1: use memdev for RAM
b3fb459 arm/nseries: use memdev for RAM
d574f02 arm/musicpal: use memdev for RAM
db4d4b5 arm/mps2: use memdev for RAM
75b0a20 arm/mps2-tz: use memdev for RAM
78f2a36 arm/mcimx7d-sabre: use memdev for RAM
7f7d800 arm/mcimx6ul-evk: use memdev for RAM
e676979 arm/kzm: use memdev for RAM
d679bf3 arm/kzm: drop RAM size fixup
6eae6e4 arm/integratorcp: use memdev for RAM
2862d21 arm/imx25_pdk: use memdev for RAM
638e121 arm/imx25_pdk: drop RAM size fixup
97380ec arm/highbank: use memdev for RAM
df2e090 arm/digic_boards: use memdev for RAM
c3b7af3 arm/cubieboard: use memdev for RAM
dc58fe8 arm/collie: use memdev for RAM
26ff4ea arm/aspeed: use memdev for RAM
c807c2d arm/aspeed: actually check RAM size
363d602 alpha/dp264: use memdev for RAM
f8b117b vl.c: ensure that ram_size matches size of machine.memory-backend
6ecdd95 vl.c: move -m parsing after memory backends has been processed
39f9cfc initialize MachineState::ram in NUMA case
9f40209 machine: introduce convenience MachineState::ram
b2ce5d3 machine: alias -mem-path and -mem-prealloc into memory-foo backend
896a0dc machine: introduce memory-backend property
18115fc numa: remove deprecated -mem-path fallback to anonymous RAM

=== OUTPUT BEGIN ===
1/79 Checking commit 18115fc6fab3 (numa: remove deprecated -mem-path fallback to anonymous RAM)
2/79 Checking commit 896a0dccad5c (machine: introduce memory-backend property)
3/79 Checking commit b2ce5d3fecf9 (machine: alias -mem-path and -mem-prealloc into memory-foo backend)
4/79 Checking commit 9f40209ffc79 (machine: introduce convenience MachineState::ram)
5/79 Checking commit 39f9cfc53145 (initialize MachineState::ram in NUMA case)
6/79 Checking commit 6ecdd9593d8d (vl.c: move -m parsing after memory backends has been processed)
7/79 Checking commit f8b117bd9035 (vl.c: ensure that ram_size matches size of machine.memory-backend)
8/79 Checking commit 363d60235895 (alpha/dp264: use memdev for RAM)
ERROR: spaces required around that '*' (ctx:WxV)
#30: FILE: hw/alpha/alpha_sys.h:14:
+PCIBus *typhoon_init(MemoryRegion *, ISABus **, qemu_irq *, AlphaCPU *[4],
                                                                      ^

total: 1 errors, 0 warnings, 49 lines checked

Patch 8/79 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

9/79 Checking commit c807c2d4ef9a (arm/aspeed: actually check RAM size)
10/79 Checking commit 26ff4ea3ad75 (arm/aspeed: use memdev for RAM)
11/79 Checking commit dc58fe8b3b6f (arm/collie: use memdev for RAM)
12/79 Checking commit c3b7af340f05 (arm/cubieboard: use memdev for RAM)
13/79 Checking commit df2e090ab9d7 (arm/digic_boards: use memdev for RAM)
14/79 Checking commit 97380ec58a73 (arm/highbank: use memdev for RAM)
15/79 Checking commit 638e121a7147 (arm/imx25_pdk: drop RAM size fixup)
16/79 Checking commit 2862d214c4ae (arm/imx25_pdk: use memdev for RAM)
17/79 Checking commit 6eae6e4d7be6 (arm/integratorcp: use memdev for RAM)
18/79 Checking commit d679bf37496f (arm/kzm: drop RAM size fixup)
19/79 Checking commit e676979b4fba (arm/kzm: use memdev for RAM)
20/79 Checking commit 7f7d8009d766 (arm/mcimx6ul-evk: use memdev for RAM)
21/79 Checking commit 78f2a36ff974 (arm/mcimx7d-sabre: use memdev for RAM)
22/79 Checking commit 75b0a208ab98 (arm/mps2-tz: use memdev for RAM)
23/79 Checking commit db4d4b573271 (arm/mps2: use memdev for RAM)
24/79 Checking commit d574f02e97de (arm/musicpal: use memdev for RAM)
25/79 Checking commit b3fb4594d916 (arm/nseries: use memdev for RAM)
26/79 Checking commit 0097fd0588d2 (arm/omap_sx1: use memdev for RAM)
27/79 Checking commit 6784de122e38 (arm/palm: use memdev for RAM)
28/79 Checking commit d25a0f3fc105 (arm/sabrelite: use memdev for RAM)
29/79 Checking commit 07020c85a317 (arm/raspi: use memdev for RAM)
30/79 Checking commit 4ffead478b83 (arm/sbsa-ref: use memdev for RAM)
31/79 Checking commit 685cef7cb5d4 (arm/versatilepb: use memdev for RAM)
32/79 Checking commit 6338d4ace4c1 (arm/vexpress: use memdev for RAM)
33/79 Checking commit f7a4a9dc2511 (arm/virt: use memdev for RAM)
34/79 Checking commit 93ade06459ed (arm/xilinx_zynq: drop RAM size fixup)
35/79 Checking commit 9dc7e1aef62c (arm/xilinx_zynq: use memdev for RAM)
36/79 Checking commit 7413187e091c (arm/xlnx-versal-virt: use memdev for RAM)
37/79 Checking commit f60ce9809eff (arm/xlnx-zcu102: use memdev for RAM)
38/79 Checking commit 058812ed343c (s390x/s390-virtio-ccw: use memdev for RAM)
39/79 Checking commit 839e6da50229 (null-machine: use memdev for RAM)
40/79 Checking commit ef6890c879ef (cris/axis_dev88: use memdev for RAM)
41/79 Checking commit ba281421e5af (hppa: use memdev for RAM)
42/79 Checking commit 719820521448 (x86/microvm: use memdev for RAM)
43/79 Checking commit 217eba8586ad (x86/pc: use memdev for RAM)
44/79 Checking commit b5eb224b7ccd (lm32/lm32_boards: use memdev for RAM)
45/79 Checking commit 4c253fe8b71e (lm32/milkymist: use memdev for RAM)
46/79 Checking commit f59053b0e26c (m68k/an5206: use memdev for RAM)
47/79 Checking commit 22bba182875f (m68k/q800: use memdev for RAM)
48/79 Checking commit b4e9f6da6630 (m68k/mcf5208: use memdev for RAM)
49/79 Checking commit f5acaa47c6b9 (m68k/next-cube: use memdev for RAM)
50/79 Checking commit 52f47ea4cfe9 (mips/boston: use memdev for RAM)
51/79 Checking commit 3e1d49c79397 (mips/mips_fulong2e: drop RAM size fixup)
52/79 Checking commit d84d1c8462af (mips/mips_fulong2e: use memdev for RAM)
53/79 Checking commit 2ed9f9769f3c (mips/mips_jazz: use memdev for RAM)
54/79 Checking commit e074e559753a (mips/mips_jazz: add max ram size check)
55/79 Checking commit 5d4353145b04 (mips/mips_malta: use memdev for RAM)
56/79 Checking commit 09c5a2ac20b1 (mips/mips_mipssim: use memdev for RAM)
57/79 Checking commit ee1f59dcc882 (mips/mips_r4k: use memdev for RAM)
58/79 Checking commit a018a92a7a29 (ppc/e500: drop RAM size fixup)
59/79 Checking commit aa567e147048 (ppc/e500: use memdev for RAM)
60/79 Checking commit d1977f268631 (ppc/mac_newworld: use memdev for RAM)
61/79 Checking commit 50aebc520f93 (ppc/mac_oldworld: use memdev for RAM)
62/79 Checking commit 902998f3417b (ppc/pnv: use memdev for RAM)
63/79 Checking commit a4c391c2a60a (ppc/ppc405_boards: add RAM size checks)
64/79 Checking commit 4f44f1e50408 (ppc/ppc405_boards: use memdev for RAM)
65/79 Checking commit d0744df8a90f (ppc/{ppc440_bamboo, sam460ex}: drop RAM size fixup)
66/79 Checking commit 37756d65c749 (ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM)
WARNING: Block comments use a leading /* on a separate line
#50: FILE: hw/ppc/ppc4xx_devs.c:669:
+/* Split RAM between SDRAM banks.

total: 0 errors, 1 warnings, 103 lines checked

Patch 66/79 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.
67/79 Checking commit 5d3fae5f6b6f (ppc/spapr: use memdev for RAM)
68/79 Checking commit bfdca1c99cde (ppc/virtex_ml507: use memdev for RAM)
69/79 Checking commit 2703398ed90c (sparc/leon3: use memdev for RAM)
70/79 Checking commit 232dbaf11b09 (sparc/sun4m: use memdev for RAM)
71/79 Checking commit 5b4f6c8d0827 (sparc/niagara: use memdev for RAM)
72/79 Checking commit a196f36732ef (remove no longer used memory_region_allocate_system_memory())
73/79 Checking commit 645479c62da0 (exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize())
74/79 Checking commit 77aa30129bda (exec: drop bogus mem_path from qemu_ram_alloc_from_fd())
75/79 Checking commit 00f806ce44ca (make mem_path local variable)
76/79 Checking commit f5f28260b424 (hostmem: introduce "prealloc-threads" property)
77/79 Checking commit 9bab7baf5c47 (hostmem: fix strict bind policy)
78/79 Checking commit 06204f5980b3 (tests/numa-test: make top level args dynamic and g_autofree(cli) cleanups)
79/79 Checking commit ae79fd309cdb (tests:numa-test: use explicit memdev to specify node RAM)
=== OUTPUT END ===

Test command exited with code: 1


The full log is available at
http://patchew.org/logs/20200217173452.15243-1-imammedo@redhat.com/testing.checkpatch/?type=message.
---
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Please send your feedback to patchew-devel@redhat.com

Re: [PATCH v5 15/79] arm/imx25_pdk: drop RAM size fixup

[Philippe Mathieu-Daudé]

On 2/17/20 7:56 PM, Richard Henderson wrote:
> On 2/17/20 9:33 AM, Igor Mammedov wrote:
>>       /* We need to initialize our memory */
>>       if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
>> -        warn_report("RAM size " RAM_ADDR_FMT " above max supported, "
>> +        error_report("RAM size " RAM_ADDR_FMT " above max supported, "
>>                       "reduced to %x", machine->ram_size,
>>                       FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE);
>> -        machine->ram_size = FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE;
>> +        exit(EXIT_FAILURE);
> 
> The wording here doesn't make sense anymore.
> I think it would be better to mirror that used elsewhere:
> 
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> 
> With that,
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Agreed.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> CC: peter.chubb@nicta.com.au
> ---
>   hw/arm/integratorcp.c | 9 ++++-----
>   1 file changed, 4 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
> index 0cd94d9f09..cc845b8534 100644
> --- a/hw/arm/integratorcp.c
> +++ b/hw/arm/integratorcp.c
> @@ -585,7 +585,6 @@ static void integratorcp_init(MachineState *machine)
>       Object *cpuobj;
>       ARMCPU *cpu;
>       MemoryRegion *address_space_mem = get_system_memory();
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
>       qemu_irq pic[32];
>       DeviceState *dev, *sic, *icp;
> @@ -605,14 +604,13 @@ static void integratorcp_init(MachineState *machine)
>   
>       cpu = ARM_CPU(cpuobj);
>   
> -    memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
> -                                         ram_size);
>       /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
>       /* ??? RAM should repeat to fill physical memory space.  */
>       /* SDRAM at address zero*/
> -    memory_region_add_subregion(address_space_mem, 0, ram);
> +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
>       /* And again at address 0x80000000 */
> -    memory_region_init_alias(ram_alias, NULL, "ram.alias", ram, 0, ram_size);
> +    memory_region_init_alias(ram_alias, NULL, "ram.alias", machine->ram,
> +                             0, ram_size);
>       memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
>   
>       dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
> @@ -660,6 +658,7 @@ static void integratorcp_machine_init(MachineClass *mc)
>       mc->init = integratorcp_init;
>       mc->ignore_memory_transaction_failures = true;
>       mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
> +    mc->default_ram_id = "integrator.ram";
>   }
>   
>   DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
> 

Looking at integratorcm_realize() this machine seems to handle at most 
512MiB.

Re: [PATCH v5 22/79] arm/mps2-tz: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> v4:
>    * move default_ram_size to mps2tz_class_init()
>      (Andrew Jones <drjones@redhat.com>)
> ---
>   hw/arm/mps2-tz.c | 15 +++++++++++----
>   1 file changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/arm/mps2-tz.c b/hw/arm/mps2-tz.c
> index f8b620bcc6..a8dea7dde1 100644
> --- a/hw/arm/mps2-tz.c
> +++ b/hw/arm/mps2-tz.c
> @@ -39,6 +39,7 @@
>   
>   #include "qemu/osdep.h"
>   #include "qemu/units.h"
> +#include "qemu/cutils.h"
>   #include "qapi/error.h"
>   #include "qemu/error-report.h"
>   #include "hw/arm/boot.h"
> @@ -79,7 +80,6 @@ typedef struct {
>       MachineState parent;
>   
>       ARMSSE iotkit;
> -    MemoryRegion psram;
>       MemoryRegion ssram[3];
>       MemoryRegion ssram1_m;
>       MPS2SCC scc;
> @@ -388,6 +388,13 @@ static void mps2tz_common_init(MachineState *machine)
>           exit(1);
>       }
>   
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
> +
>       sysbus_init_child_obj(OBJECT(machine), "iotkit", &mms->iotkit,
>                             sizeof(mms->iotkit), mmc->armsse_type);
>       iotkitdev = DEVICE(&mms->iotkit);
> @@ -458,9 +465,7 @@ static void mps2tz_common_init(MachineState *machine)
>        * tradeoffs. For QEMU they're all just RAM, though. We arbitrarily
>        * call the 16MB our "system memory", as it's the largest lump.
>        */
> -    memory_region_allocate_system_memory(&mms->psram,
> -                                         NULL, "mps.ram", 16 * MiB);
> -    memory_region_add_subregion(system_memory, 0x80000000, &mms->psram);
> +    memory_region_add_subregion(system_memory, 0x80000000, machine->ram);
>   
>       /* The overflow IRQs for all UARTs are ORed together.
>        * Tx, Rx and "combined" IRQs are sent to the NVIC separately.
> @@ -642,6 +647,8 @@ static void mps2tz_class_init(ObjectClass *oc, void *data)
>   
>       mc->init = mps2tz_common_init;
>       iic->check = mps2_tz_idau_check;
> +    mc->default_ram_size = 16 * MiB;
> +    mc->default_ram_id = "mps.ram";
>   }
>   
>   static void mps2tz_an505_class_init(ObjectClass *oc, void *data)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 23/79] arm/mps2: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> ---
>   hw/arm/mps2.c | 15 +++++++++++----
>   1 file changed, 11 insertions(+), 4 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 24/79] arm/musicpal: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 8:11 PM, Richard Henderson wrote:
> On 2/17/20 9:33 AM, Igor Mammedov wrote:
>> memory_region_allocate_system_memory() API is going away, so
>> replace it with memdev allocated MemoryRegion. The later is
>> initialized by generic code, so board only needs to opt in
>> to memdev scheme by providing
>>    MachineClass::default_ram_id
>> and using MachineState::ram instead of manually initializing
>> RAM memory region.
>>
>> PS:
>>   while at it add check for user supplied RAM size and error
>>   out if it mismatches board expected value.
>>
>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>> Reviewed-by: Andrew Jones <drjones@redhat.com>
>> ---
> 
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> 
>> @@ -1589,16 +1590,21 @@ static void musicpal_init(MachineState *machine)
>>       int i;
>>       unsigned long flash_size;
>>       DriveInfo *dinfo;
>> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>>       MemoryRegion *address_space_mem = get_system_memory();
>> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>>       MemoryRegion *sram = g_new(MemoryRegion, 1);
>>   
>> +    /* For now we use a fixed - the original - RAM size */
>> +    if (machine->ram_size != mc->default_ram_size) {
>> +        char *sz = size_to_str(mc->default_ram_size);
>> +        error_report("Invalid RAM size, should be %s", sz);
>> +        g_free(sz);
>> +        exit(EXIT_FAILURE);
>> +    }
> 
> If for some reason you need to re-spin this series again, and considering my
> comment re arm/imx25_pdk, I think it would be worthwhile to create a common
> helper for this:
> 
> void machine_memory_check_fixed_size(MachineState *machine)
> {
>      MachineClass *mc = MACHINE_GET_CLASS(machine);
> 
>      if (machine->ram_size != mc->default_ram_size) {
>          char *sz = size_to_str(mc->default_ram_size);
>          error_report("Invalid RAM size, should be %s", sz);
>          g_free(sz);
>          exit(EXIT_FAILURE);
>      }
> }
> 
> That would keep the language consistent across the boards.

Excellent idea.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 41/79] hppa: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: rth@twiddle.net
> CC: deller@gmx.de
> ---
>   hw/hppa/machine.c | 10 +++-------
>   1 file changed, 3 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/hppa/machine.c b/hw/hppa/machine.c
> index d8755ec422..67181e75ba 100644
> --- a/hw/hppa/machine.c
> +++ b/hw/hppa/machine.c
> @@ -71,14 +71,11 @@ static void machine_hppa_init(MachineState *machine)
>       uint64_t kernel_entry = 0, kernel_low, kernel_high;
>       MemoryRegion *addr_space = get_system_memory();
>       MemoryRegion *rom_region;
> -    MemoryRegion *ram_region;
>       MemoryRegion *cpu_region;
>       long i;
>       unsigned int smp_cpus = machine->smp.cpus;
>       SysBusDevice *s;
>   
> -    ram_size = machine->ram_size;
> -
>       /* Create CPUs.  */
>       for (i = 0; i < smp_cpus; i++) {
>           char *name = g_strdup_printf("cpu%ld-io-eir", i);
> @@ -97,10 +94,8 @@ static void machine_hppa_init(MachineState *machine)
>           error_report("RAM size is currently restricted to 3GB");
>           exit(EXIT_FAILURE);
>       }
> -    ram_region = g_new(MemoryRegion, 1);
> -    memory_region_allocate_system_memory(ram_region, OBJECT(machine),
> -                                         "ram", ram_size);
> -    memory_region_add_subregion_overlap(addr_space, 0, ram_region, -1);
> +    memory_region_add_subregion_overlap(addr_space, 0, machine->ram, -1);
> +
>   
>       /* Init Lasi chip */
>       lasi_init(addr_space);
> @@ -298,6 +293,7 @@ static void machine_hppa_machine_init(MachineClass *mc)
>       mc->is_default = 1;
>       mc->default_ram_size = 512 * MiB;
>       mc->default_boot_order = "cd";
> +    mc->default_ram_id = "ram";
>   }
>   
>   DEFINE_MACHINE("hppa", machine_hppa_machine_init)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 49/79] m68k/next-cube: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
>   hw/m68k/next-cube.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 47/79] m68k/q800: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> Switch to using generic main RAM allocation. To do this set
> MachineClass::default_ram_id to m68k_mac.ram and use
> MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Laurent Vivier <laurent@vivier.eu>
> ---
>   hw/m68k/q800.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/m68k/q800.c b/hw/m68k/q800.c
> index 1e32363688..a4c4bc14cb 100644
> --- a/hw/m68k/q800.c
> +++ b/hw/m68k/q800.c
> @@ -160,7 +160,6 @@ static void q800_init(MachineState *machine)
>       ram_addr_t initrd_base;
>       int32_t initrd_size;
>       MemoryRegion *rom;
> -    MemoryRegion *ram;
>       MemoryRegion *io;
>       const int io_slice_nb = (IO_SIZE / IO_SLICE) - 1;
>       int i;
> @@ -194,9 +193,7 @@ static void q800_init(MachineState *machine)
>       qemu_register_reset(main_cpu_reset, cpu);
>   
>       /* RAM */
> -    ram = g_malloc(sizeof(*ram));
> -    memory_region_init_ram(ram, NULL, "m68k_mac.ram", ram_size, &error_abort);
> -    memory_region_add_subregion(get_system_memory(), 0, ram);
> +    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
>   
>       /*
>        * Memory from IO_BASE to IO_BASE + IO_SLICE is repeated
> @@ -443,6 +440,7 @@ static void q800_machine_class_init(ObjectClass *oc, void *data)
>       mc->max_cpus = 1;
>       mc->is_default = 0;
>       mc->block_default_type = IF_SCSI;
> +    mc->default_ram_id = "m68k_mac.ram";
>   }
>   
>   static const TypeInfo q800_machine_typeinfo = {
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Igor Mammedov]

On Tue, 18 Feb 2020 07:55:14 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/17/20 6:33 PM, Igor Mammedov wrote:
> > memory_region_allocate_system_memory() API is going away, so
> > replace it with memdev allocated MemoryRegion. The later is
> > initialized by generic code, so board only needs to opt in
> > to memdev scheme by providing
> >    MachineClass::default_ram_id
> > and using MachineState::ram instead of manually initializing
> > RAM memory region.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Andrew Jones <drjones@redhat.com>
> > ---
> > CC: peter.chubb@nicta.com.au
> > ---
> >   hw/arm/integratorcp.c | 9 ++++-----
> >   1 file changed, 4 insertions(+), 5 deletions(-)
> > 
> > diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
> > index 0cd94d9f09..cc845b8534 100644
> > --- a/hw/arm/integratorcp.c
> > +++ b/hw/arm/integratorcp.c
> > @@ -585,7 +585,6 @@ static void integratorcp_init(MachineState *machine)
> >       Object *cpuobj;
> >       ARMCPU *cpu;
> >       MemoryRegion *address_space_mem = get_system_memory();
> > -    MemoryRegion *ram = g_new(MemoryRegion, 1);
> >       MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
> >       qemu_irq pic[32];
> >       DeviceState *dev, *sic, *icp;
> > @@ -605,14 +604,13 @@ static void integratorcp_init(MachineState *machine)
> >   
> >       cpu = ARM_CPU(cpuobj);
> >   
> > -    memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
> > -                                         ram_size);
> >       /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
> >       /* ??? RAM should repeat to fill physical memory space.  */
> >       /* SDRAM at address zero*/
> > -    memory_region_add_subregion(address_space_mem, 0, ram);
> > +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
> >       /* And again at address 0x80000000 */
> > -    memory_region_init_alias(ram_alias, NULL, "ram.alias", ram, 0, ram_size);
> > +    memory_region_init_alias(ram_alias, NULL, "ram.alias", machine->ram,
> > +                             0, ram_size);
> >       memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
> >   
> >       dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
> > @@ -660,6 +658,7 @@ static void integratorcp_machine_init(MachineClass *mc)
> >       mc->init = integratorcp_init;
> >       mc->ignore_memory_transaction_failures = true;
> >       mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
> > +    mc->default_ram_id = "integrator.ram";
> >   }
> >   
> >   DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
> >   
> 
> Looking at integratorcm_realize() this machine seems to handle at most 
> 512MiB.
> 
I'll add a patch on top.

Re: [PATCH v5 24/79] arm/musicpal: use memdev for RAM

[Igor Mammedov]

On Mon, 17 Feb 2020 11:11:29 -0800
Richard Henderson <richard.henderson@linaro.org> wrote:

> On 2/17/20 9:33 AM, Igor Mammedov wrote:
> > memory_region_allocate_system_memory() API is going away, so
> > replace it with memdev allocated MemoryRegion. The later is
> > initialized by generic code, so board only needs to opt in
> > to memdev scheme by providing
> >   MachineClass::default_ram_id
> > and using MachineState::ram instead of manually initializing
> > RAM memory region.
> > 
> > PS:
> >  while at it add check for user supplied RAM size and error
> >  out if it mismatches board expected value.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Andrew Jones <drjones@redhat.com>
> > ---  
> 
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Thanks!

> 
> > @@ -1589,16 +1590,21 @@ static void musicpal_init(MachineState *machine)
> >      int i;
> >      unsigned long flash_size;
> >      DriveInfo *dinfo;
> > +    MachineClass *mc = MACHINE_GET_CLASS(machine);
> >      MemoryRegion *address_space_mem = get_system_memory();
> > -    MemoryRegion *ram = g_new(MemoryRegion, 1);
> >      MemoryRegion *sram = g_new(MemoryRegion, 1);
> >  
> > +    /* For now we use a fixed - the original - RAM size */
> > +    if (machine->ram_size != mc->default_ram_size) {
> > +        char *sz = size_to_str(mc->default_ram_size);
> > +        error_report("Invalid RAM size, should be %s", sz);
> > +        g_free(sz);
> > +        exit(EXIT_FAILURE);
> > +    }  
> 
> If for some reason you need to re-spin this series again, and considering my
> comment re arm/imx25_pdk, I think it would be worthwhile to create a common
> helper for this:
> 

This check is temporary, I plan to replace it with a similar
check in generic machine code and clean it up. The reason it
is not done in this series is that generalizing it is not
related to this series. Hence I'd prefer to keep current
approach in this series to avoid touching already reviewed
patches and generalize it later.


> void machine_memory_check_fixed_size(MachineState *machine)
> {
>     MachineClass *mc = MACHINE_GET_CLASS(machine);
> 
>     if (machine->ram_size != mc->default_ram_size) {
>         char *sz = size_to_str(mc->default_ram_size);
>         error_report("Invalid RAM size, should be %s", sz);
>         g_free(sz);
>         exit(EXIT_FAILURE);
>     }
> }
> 
> That would keep the language consistent across the boards.
> 
> 
> r~
> 

[PATCH v6 15/79] arm/imx25_pdk: drop RAM size fixup

[Igor Mammedov]

If user provided non-sense RAM size, board will complain and
continue running with max RAM size supported.
Also RAM is going to be allocated by generic code, so it won't be
possible for board to fix things up for user.

Make it error message and exit to force user fix CLI,
instead of accepting non-sense CLI values.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
v6:
 - use size_to_str() to print size
    (Richard Henderson <richard.henderson@linaro.org>)

CC: richard.henderson@linaro.org
---
 hw/arm/imx25_pdk.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/hw/arm/imx25_pdk.c b/hw/arm/imx25_pdk.c
index c76fc2bd94..c7c51d6cbc 100644
--- a/hw/arm/imx25_pdk.c
+++ b/hw/arm/imx25_pdk.c
@@ -32,6 +32,7 @@
 #include "exec/address-spaces.h"
 #include "sysemu/qtest.h"
 #include "hw/i2c/i2c.h"
+#include "qemu/cutils.h"
 
 /* Memory map for PDK Emulation Baseboard:
  * 0x00000000-0x7fffffff See i.MX25 SOC fr support
@@ -66,6 +67,7 @@ static struct arm_boot_info imx25_pdk_binfo;
 
 static void imx25_pdk_init(MachineState *machine)
 {
+    MachineClass *mc = MACHINE_GET_CLASS(machine);
     IMX25PDK *s = g_new0(IMX25PDK, 1);
     unsigned int ram_size;
     unsigned int alias_offset;
@@ -78,10 +80,10 @@ static void imx25_pdk_init(MachineState *machine)
 
     /* We need to initialize our memory */
     if (machine->ram_size > (FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE)) {
-        warn_report("RAM size " RAM_ADDR_FMT " above max supported, "
-                    "reduced to %x", machine->ram_size,
-                    FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE);
-        machine->ram_size = FSL_IMX25_SDRAM0_SIZE + FSL_IMX25_SDRAM1_SIZE;
+        char *sz = size_to_str(mc->default_ram_size);
+        error_report("Invalid RAM size, should be %s", sz);
+        g_free(sz);
+        exit(EXIT_FAILURE);
     }
 
     memory_region_allocate_system_memory(&s->ram, NULL, "imx25.ram",
-- 
2.18.1

[PATCH v6 64/79] ppc/ppc405_boards: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

PS:
in ref405ep alias RAM into ram_memories[] to avoid re-factoring
its user ppc405ep_init(), which would be invasive and out of
scope this patch.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v6:
  - fix copy/paste error s/ef405ep.ram/taihu_405ep.ram/
    (Richard Henderson <richard.henderson@linaro.org>)

CC: richard.henderson@linaro.org
CC: david@gibson.dropbear.id.au
---
 hw/ppc/ppc405_boards.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/hw/ppc/ppc405_boards.c b/hw/ppc/ppc405_boards.c
index 057882a5d2..de93c40f1a 100644
--- a/hw/ppc/ppc405_boards.c
+++ b/hw/ppc/ppc405_boards.c
@@ -170,8 +170,8 @@ static void ref405ep_init(MachineState *machine)
     }
 
     /* XXX: fix this */
-    memory_region_allocate_system_memory(&ram_memories[0], NULL, "ef405ep.ram",
-                                         machine->ram_size);
+    memory_region_init_alias(&ram_memories[0], NULL, "ef405ep.ram.alias",
+                             machine->ram, 0, machine->ram_size);
     ram_bases[0] = 0;
     ram_sizes[0] = machine->ram_size;
     memory_region_init(&ram_memories[1], NULL, "ef405ep.ram1", 0);
@@ -312,6 +312,7 @@ static void ref405ep_class_init(ObjectClass *oc, void *data)
     mc->desc = "ref405ep";
     mc->init = ref405ep_init;
     mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "ef405ep.ram";
 }
 
 static const TypeInfo ref405ep_type = {
@@ -424,7 +425,6 @@ static void taihu_405ep_init(MachineState *machine)
     MemoryRegion *sysmem = get_system_memory();
     MemoryRegion *bios;
     MemoryRegion *ram_memories = g_new(MemoryRegion, 2);
-    MemoryRegion *ram = g_malloc0(sizeof(*ram));
     hwaddr ram_bases[2], ram_sizes[2];
     long bios_size;
     target_ulong kernel_base, initrd_base;
@@ -439,18 +439,16 @@ static void taihu_405ep_init(MachineState *machine)
         g_free(sz);
         exit(EXIT_FAILURE);
     }
-    memory_region_allocate_system_memory(ram, NULL, "taihu_405ep.ram",
-                                         machine->ram_size);
 
     ram_bases[0] = 0;
     ram_sizes[0] = 0x04000000;
     memory_region_init_alias(&ram_memories[0], NULL,
-                             "taihu_405ep.ram-0", ram, ram_bases[0],
+                             "taihu_405ep.ram-0", machine->ram, ram_bases[0],
                              ram_sizes[0]);
     ram_bases[1] = 0x04000000;
     ram_sizes[1] = 0x04000000;
     memory_region_init_alias(&ram_memories[1], NULL,
-                             "taihu_405ep.ram-1", ram, ram_bases[1],
+                             "taihu_405ep.ram-1", machine->ram, ram_bases[1],
                              ram_sizes[1]);
     ppc405ep_init(sysmem, ram_memories, ram_bases, ram_sizes,
                   33333333, &pic, kernel_filename == NULL ? 0 : 1);
@@ -546,6 +544,7 @@ static void taihu_class_init(ObjectClass *oc, void *data)
     mc->desc = "taihu";
     mc->init = taihu_405ep_init;
     mc->default_ram_size = 0x08000000;
+    mc->default_ram_id = "taihu_405ep.ram";
 }
 
 static const TypeInfo taihu_type = {
-- 
2.18.1

[PATCH v6 66/79] ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM

[Igor Mammedov]

memory_region_allocate_system_memory() API is going away, so
replace it with memdev allocated MemoryRegion. The later is
initialized by generic code, so board only needs to opt in
to memdev scheme by providing
  MachineClass::default_ram_id
and using MachineState::ram instead of manually initializing
RAM memory region.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
---
v6:
  * fix checkpatch warning about 'Block comments'
v3:
  * drop ram_size from comment above ppc4xx_sdram_banks
     (BALATON Zoltan <balaton@eik.bme.hu>)
  * move memory alias initialization into the same loop
    where RAM is split on banks.
     (BALATON Zoltan <balaton@eik.bme.hu>)
v3.1
  * rebase on top of previous patch due to changed context
---
 include/hw/ppc/ppc4xx.h |  2 +-
 hw/ppc/ppc440_bamboo.c  |  3 ++-
 hw/ppc/ppc4xx_devs.c    | 29 ++++++++++++-----------------
 hw/ppc/sam460ex.c       |  3 ++-
 4 files changed, 17 insertions(+), 20 deletions(-)

diff --git a/include/hw/ppc/ppc4xx.h b/include/hw/ppc/ppc4xx.h
index b8c8f324b4..cc19c8da5b 100644
--- a/include/hw/ppc/ppc4xx.h
+++ b/include/hw/ppc/ppc4xx.h
@@ -42,7 +42,7 @@ enum {
 qemu_irq *ppcuic_init (CPUPPCState *env, qemu_irq *irqs,
                        uint32_t dcr_base, int has_ssr, int has_vr);
 
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[]);
diff --git a/hw/ppc/ppc440_bamboo.c b/hw/ppc/ppc440_bamboo.c
index 7e3bc0ec7f..4c5e9e4373 100644
--- a/hw/ppc/ppc440_bamboo.c
+++ b/hw/ppc/ppc440_bamboo.c
@@ -202,7 +202,7 @@ static void bamboo_init(MachineState *machine)
     /* SDRAM controller */
     memset(ram_bases, 0, sizeof(ram_bases));
     memset(ram_sizes, 0, sizeof(ram_sizes));
-    ppc4xx_sdram_banks(machine->ram_size, PPC440EP_SDRAM_NR_BANKS, ram_memories,
+    ppc4xx_sdram_banks(machine->ram, PPC440EP_SDRAM_NR_BANKS, ram_memories,
                        ram_bases, ram_sizes, ppc440ep_sdram_bank_sizes);
     /* XXX 440EP's ECC interrupts are on UIC1, but we've only created UIC0. */
     ppc4xx_sdram_init(env, pic[14], PPC440EP_SDRAM_NR_BANKS, ram_memories,
@@ -289,6 +289,7 @@ static void bamboo_machine_init(MachineClass *mc)
     mc->desc = "bamboo";
     mc->init = bamboo_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("440epb");
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("bamboo", bamboo_machine_init)
diff --git a/hw/ppc/ppc4xx_devs.c b/hw/ppc/ppc4xx_devs.c
index d89008a2a4..3376c43ff5 100644
--- a/hw/ppc/ppc4xx_devs.c
+++ b/hw/ppc/ppc4xx_devs.c
@@ -666,24 +666,24 @@ void ppc4xx_sdram_init (CPUPPCState *env, qemu_irq irq, int nbanks,
         sdram_map_bcr(sdram);
 }
 
-/* Fill in consecutive SDRAM banks with 'ram_size' bytes of memory.
+/*
+ * Split RAM between SDRAM banks.
  *
  * sdram_bank_sizes[] must be in descending order, that is sizes[i] > sizes[i+1]
  * and must be 0-terminated.
  *
  * The 4xx SDRAM controller supports a small number of banks, and each bank
  * must be one of a small set of sizes. The number of banks and the supported
- * sizes varies by SoC. */
-void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
+ * sizes varies by SoC.
+ */
+void ppc4xx_sdram_banks(MemoryRegion *ram, int nr_banks,
                         MemoryRegion ram_memories[],
                         hwaddr ram_bases[], hwaddr ram_sizes[],
                         const ram_addr_t sdram_bank_sizes[])
 {
-    MemoryRegion *ram = g_malloc0(sizeof(*ram));
-    ram_addr_t size_left = ram_size;
+    ram_addr_t size_left = memory_region_size(ram);
     ram_addr_t base = 0;
     ram_addr_t bank_size;
-    int last_bank = 0;
     int i;
     int j;
 
@@ -691,11 +691,15 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         for (j = 0; sdram_bank_sizes[j] != 0; j++) {
             bank_size = sdram_bank_sizes[j];
             if (bank_size <= size_left) {
+                char name[32];
+
                 ram_bases[i] = base;
                 ram_sizes[i] = bank_size;
                 base += bank_size;
                 size_left -= bank_size;
-                last_bank = i;
+                snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
+                memory_region_init_alias(&ram_memories[i], NULL, name, ram,
+                                         ram_bases[i], ram_sizes[i]);
                 break;
             }
         }
@@ -706,7 +710,7 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
     }
 
     if (size_left) {
-        ram_addr_t used_size = ram_size - size_left;
+        ram_addr_t used_size = memory_region_size(ram) - size_left;
         GString *s = g_string_new(NULL);
 
         for (i = 0; sdram_bank_sizes[i]; i++) {
@@ -722,15 +726,6 @@ void ppc4xx_sdram_banks(ram_addr_t ram_size, int nr_banks,
         g_string_free(s, true);
         exit(EXIT_FAILURE);
     }
-
-    memory_region_allocate_system_memory(ram, NULL, "ppc4xx.sdram", ram_size);
-
-    for (i = 0; i <= last_bank; i++) {
-        char name[32];
-        snprintf(name, sizeof(name), "ppc4xx.sdram%d", i);
-        memory_region_init_alias(&ram_memories[i], NULL, name, ram,
-                                 ram_bases[i], ram_sizes[i]);
-    }
 }
 
 /*****************************************************************************/
diff --git a/hw/ppc/sam460ex.c b/hw/ppc/sam460ex.c
index 17d40bd672..898453cf30 100644
--- a/hw/ppc/sam460ex.c
+++ b/hw/ppc/sam460ex.c
@@ -324,7 +324,7 @@ static void sam460ex_init(MachineState *machine)
     /* SDRAM controller */
     /* put all RAM on first bank because board has one slot
      * and firmware only checks that */
-    ppc4xx_sdram_banks(machine->ram_size, 1, ram_memories, ram_bases, ram_sizes,
+    ppc4xx_sdram_banks(machine->ram, 1, ram_memories, ram_bases, ram_sizes,
                        ppc460ex_sdram_bank_sizes);
 
     /* FIXME: does 460EX have ECC interrupts? */
@@ -484,6 +484,7 @@ static void sam460ex_machine_init(MachineClass *mc)
     mc->init = sam460ex_init;
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("460exb");
     mc->default_ram_size = 512 * MiB;
+    mc->default_ram_id = "ppc4xx.sdram";
 }
 
 DEFINE_MACHINE("sam460ex", sam460ex_machine_init)
-- 
2.18.1

Re: [PATCH v5 00/79] refactor main RAM allocation to use hostmem backend

[Igor Mammedov]

On Mon, 17 Feb 2020 12:44:57 -0800 (PST)
no-reply@patchew.org wrote:

> Patchew URL: https://patchew.org/QEMU/20200217173452.15243-1-imammedo@redhat.com/
> 
> 
> 
> Hi,
> 
> This series seems to have some coding style problems. See output below for
> more information:
> 
[...]
> 8/79 Checking commit 363d60235895 (alpha/dp264: use memdev for RAM)
> ERROR: spaces required around that '*' (ctx:WxV)
> #30: FILE: hw/alpha/alpha_sys.h:14:
> +PCIBus *typhoon_init(MemoryRegion *, ISABus **, qemu_irq *, AlphaCPU *[4],
>                                                                       ^
false positive

[...]
> 66/79 Checking commit 37756d65c749 (ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM)
> WARNING: Block comments use a leading /* on a separate line
> #50: FILE: hw/ppc/ppc4xx_devs.c:669:
> +/* Split RAM between SDRAM banks.

fixed up in v6 posted as reply to this patch

[...]

Re: [PATCH v5 00/79] refactor main RAM allocation to use hostmem backend

[Igor Mammedov]

On Mon, 17 Feb 2020 12:33:33 -0500
Igor Mammedov <imammedo@redhat.com> wrote:

Paolo,

Can you merge this via your tree if possible, pls?
(You said that's about the time you'd be preparing pull req)

> v5:
>   - pick up new Reviewed-by-s
>   - drop "ppc/prep: use memdev for RAM" since machine was removed
>   - add patch "mips/mips_jazz: add max ram size check"
>   - extend comment for "default_ram_id" to clarify that's setting it serves
>     as optin flag for -m support. [03/79]
>   - rebase "arm/raspi: use memdev for RAM" once more
> 
> v4:
>   - pick up new Reviewed-by-s
>   - Fix access to uninitialized pagesize/hpsize in
>     "[PATCH REPOST v3 74/80] exec: cleanup  qemu_minrampagesize()/qemu_maxrampagesize()"
>   - Make explicitly provided memory-backend work by using string property instead
>     of link so it would be possible to delay access to the backend to the time
>     when backends are initialized.
>   - added new patches to make explicit backend work nice with -m and do sanity
>     check on ram_size
>       'vl.c: move -m parsing after memory backends has been processed'
>       'vl.c: ensure that ram_size matches size of machine.memory-backend"
>     all this ram_size business needs cleanup too, but that's out of the scope
>     of this series.
>   - include m68k/q800 board into conversion
>   - drop patches that were merged through other trees
> 
> v3:
>   - due to libvirt not being ready, postpone till 5.1
>      * [PATCH v2 82/86] numa: forbid '-numa node,  mem' for 5.0 and newer machine types
>      and depended
>        [PATCH v2 86/86] numa: remove deprecated implicit RAM distribution  between nodes
>   - drop as not related "[PATCH v2 85/86] numa: make exit() usage consistent"
>   - drop "[PATCH v2 76/86] post conversion default_ram_id cleanup"
>     so that default memory-backedend won't be created for boards that do not care
>     about -m. Which makes -m optin feature. We should decide  what do in  case
>     board doesn't use -m (but that's out of scope of this series)
>   - use object_register_sugar_prop() instead of hacking compat props directly
>   - simplified/reworked aspeed patches
>   - s/RAM_ADDR_FMT/size_to_str()/
>   - rename 'ram-memdev' property to 'memory-backend'
>   - minor fixes to numa-test
>   - fixes for issues noticed during review of
>        [PATCH v2 66/86] ppc/{ppc440_bamboo,sam460x}: drop RAM size fixup
> 
> v2:
>   - fix compile errors on mingw32 host by introducing RAM_ADDR_UFMT [11/86]
>   - replace "[PATCH 43/86] hppa: drop RAM size fixup" with alternative
>     patches made by Philippe (which effectively do the same thing but other
>     way around)
>   - ppc440: fix crash and add suggested valid RAM size in error output.
>     s/ppc4xx_sdram_adjust/ppc4xx_sdram_prep/ and simplify it by removing
>     not necessary nested loop
>   - rebase on current master due to new conflicts
> 
> 
> Series removes ad hoc RAM allocation API (memory_region_allocate_system_memory)
> and consolidates it around hostmem backend. It allows to
>  * resolve conflicts between global -mem-prealloc and hostmem's "policy" option
>    fixing premature allocation before binding policy is applied
>  * simplify complicated memory allocation routines which had to deal with 2 ways
>    to allocate RAM.
>  * it allows to reuse hostmem backends of a choice for main RAM without adding
>    extra CLI options to duplicate hostmem features.
>    Recent case was -mem-shared, to enable vhost-user on targets that don't
>    support hostmem backends [1] (ex: s390)
>  * move RAM allocation from individual boards into generic machine code and
>    provide them with prepared MemoryRegion.
>  * clean up deprecated NUMA features which were tied to the old API (see patches)
>     - "numa: remove deprecated -mem-path fallback to anonymous RAM"
>     - (POSTPONED, waiting on libvirt side) "forbid '-numa node,mem' for 5.0 and newer machine types"
>     - (POSTPONED) "numa: remove deprecated implicit RAM distribution between nodes"
> 
> Conversion introduces a new machine.memory-backend property and wrapper code that
> aliases global -mem-path and -mem-alloc into automatically created hostmem
> backend properties (provided memory-backend was not set explicitly given by user).
> And then follows bulk of trivial patches that incrementally convert individual
> boards to using machine.memory-backend provided MemoryRegion.
> 
> Board conversion typically involves:
>  * providing MachineClass::default_ram_size and MachineClass::default_ram_id
>    so generic code could create default backend if user didn't explicitly provide
>    memory-backend or -m options
>  * dropping memory_region_allocate_system_memory() call
>  * using convenience MachineState::ram MemoryRegion, which points to MemoryRegion
>    allocated by ram-memdev
> On top of that for some boards:
>  * added missing ram_size checks (typically it were boards with fixed ram size)
>  * ram_size fixups were replaced by checks and hard errors, forcing user to
>    provide correct "-m" values instead of ignoring it and continuing running.
> 
> After all boards are converted the old API is removed and memory allocation
> routines are cleaned up.
> 
> git tree for testing:
>   https://github.com/imammedo/qemu convert_main_ram_to_memdev_v5
> 
> previous rev:
>   https://github.com/imammedo/qemu convert_main_ram_to_memdev_v4
> 
> CC: Paolo Bonzini <pbonzini@redhat.com>
> 
[...]

Re: [PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Igor Mammedov]

On Tue, 18 Feb 2020 07:55:14 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/17/20 6:33 PM, Igor Mammedov wrote:
> > memory_region_allocate_system_memory() API is going away, so
> > replace it with memdev allocated MemoryRegion. The later is
> > initialized by generic code, so board only needs to opt in
> > to memdev scheme by providing
> >    MachineClass::default_ram_id
> > and using MachineState::ram instead of manually initializing
> > RAM memory region.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Andrew Jones <drjones@redhat.com>
> > ---
> > CC: peter.chubb@nicta.com.au
> > ---
> >   hw/arm/integratorcp.c | 9 ++++-----
> >   1 file changed, 4 insertions(+), 5 deletions(-)
> > 
> > diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
> > index 0cd94d9f09..cc845b8534 100644
> > --- a/hw/arm/integratorcp.c
> > +++ b/hw/arm/integratorcp.c
> > @@ -585,7 +585,6 @@ static void integratorcp_init(MachineState *machine)
> >       Object *cpuobj;
> >       ARMCPU *cpu;
> >       MemoryRegion *address_space_mem = get_system_memory();
> > -    MemoryRegion *ram = g_new(MemoryRegion, 1);
> >       MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
> >       qemu_irq pic[32];
> >       DeviceState *dev, *sic, *icp;
> > @@ -605,14 +604,13 @@ static void integratorcp_init(MachineState *machine)
> >   
> >       cpu = ARM_CPU(cpuobj);
> >   
> > -    memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
> > -                                         ram_size);
> >       /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
> >       /* ??? RAM should repeat to fill physical memory space.  */
> >       /* SDRAM at address zero*/
> > -    memory_region_add_subregion(address_space_mem, 0, ram);
> > +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
> >       /* And again at address 0x80000000 */
> > -    memory_region_init_alias(ram_alias, NULL, "ram.alias", ram, 0, ram_size);
> > +    memory_region_init_alias(ram_alias, NULL, "ram.alias", machine->ram,
> > +                             0, ram_size);
> >       memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
> >   
> >       dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
> > @@ -660,6 +658,7 @@ static void integratorcp_machine_init(MachineClass *mc)
> >       mc->init = integratorcp_init;
> >       mc->ignore_memory_transaction_failures = true;
> >       mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
> > +    mc->default_ram_id = "integrator.ram";
> >   }
> >   
> >   DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
> >   
> 
> Looking at integratorcm_realize() this machine seems to handle at most 
> 512MiB.

According to 
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0159b/Cegeadbj.html

it supports "optionally, 16 to 256MB of SDRAM plugged into the DIMM socket"
so I'm not sure that realize is valid reference here.
(well I don't know anything about arm boards, but it probably should be
double checked by maintainer).

PS:
It should not hold this series (as check wasn't there to begin with),
I'll post a patch on top to add check once we decide to what limit it
should be set.

Re: [PATCH v5 17/79] arm/integratorcp: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/18/20 5:41 PM, Igor Mammedov wrote:
> On Tue, 18 Feb 2020 07:55:14 +0100
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> On 2/17/20 6:33 PM, Igor Mammedov wrote:
>>> memory_region_allocate_system_memory() API is going away, so
>>> replace it with memdev allocated MemoryRegion. The later is
>>> initialized by generic code, so board only needs to opt in
>>> to memdev scheme by providing
>>>     MachineClass::default_ram_id
>>> and using MachineState::ram instead of manually initializing
>>> RAM memory region.
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> Reviewed-by: Andrew Jones <drjones@redhat.com>
>>> ---
>>> CC: peter.chubb@nicta.com.au
>>> ---
>>>    hw/arm/integratorcp.c | 9 ++++-----
>>>    1 file changed, 4 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/hw/arm/integratorcp.c b/hw/arm/integratorcp.c
>>> index 0cd94d9f09..cc845b8534 100644
>>> --- a/hw/arm/integratorcp.c
>>> +++ b/hw/arm/integratorcp.c
>>> @@ -585,7 +585,6 @@ static void integratorcp_init(MachineState *machine)
>>>        Object *cpuobj;
>>>        ARMCPU *cpu;
>>>        MemoryRegion *address_space_mem = get_system_memory();
>>> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>>>        MemoryRegion *ram_alias = g_new(MemoryRegion, 1);
>>>        qemu_irq pic[32];
>>>        DeviceState *dev, *sic, *icp;
>>> @@ -605,14 +604,13 @@ static void integratorcp_init(MachineState *machine)
>>>    
>>>        cpu = ARM_CPU(cpuobj);
>>>    
>>> -    memory_region_allocate_system_memory(ram, NULL, "integrator.ram",
>>> -                                         ram_size);
>>>        /* ??? On a real system the first 1Mb is mapped as SSRAM or boot flash.  */
>>>        /* ??? RAM should repeat to fill physical memory space.  */
>>>        /* SDRAM at address zero*/
>>> -    memory_region_add_subregion(address_space_mem, 0, ram);
>>> +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
>>>        /* And again at address 0x80000000 */
>>> -    memory_region_init_alias(ram_alias, NULL, "ram.alias", ram, 0, ram_size);
>>> +    memory_region_init_alias(ram_alias, NULL, "ram.alias", machine->ram,
>>> +                             0, ram_size);
>>>        memory_region_add_subregion(address_space_mem, 0x80000000, ram_alias);
>>>    
>>>        dev = qdev_create(NULL, TYPE_INTEGRATOR_CM);
>>> @@ -660,6 +658,7 @@ static void integratorcp_machine_init(MachineClass *mc)
>>>        mc->init = integratorcp_init;
>>>        mc->ignore_memory_transaction_failures = true;
>>>        mc->default_cpu_type = ARM_CPU_TYPE_NAME("arm926");
>>> +    mc->default_ram_id = "integrator.ram";
>>>    }
>>>    
>>>    DEFINE_MACHINE("integratorcp", integratorcp_machine_init)
>>>    
>>
>> Looking at integratorcm_realize() this machine seems to handle at most
>> 512MiB.
> 
> According to
> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0159b/Cegeadbj.html
> 
> it supports "optionally, 16 to 256MB of SDRAM plugged into the DIMM socket"
> so I'm not sure that realize is valid reference here.
> (well I don't know anything about arm boards, but it probably should be
> double checked by maintainer).
> 
> PS:
> It should not hold this series (as check wasn't there to begin with),
> I'll post a patch on top to add check once we decide to what limit it
> should be set.

This is certainly not a blocking comment (neither am I waiting for you 
to fix this, I was just making a comment while reviewing the whole). 
Sorry if this was not clear.

Re: [PATCH v5 02/79] machine: introduce memory-backend property

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> Property will contain link to memory backend that will be
> used for backing initial RAM.
> Follow up commit will alias -mem-path and -mem-prealloc
> CLI options into memory backend options to make memory
> handling consistent (using only hostmem backend family
> for guest RAM allocation).
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v4:
>   * make property a string, instead of a link.
>     Fixes -M memory-backend=foo: foo not found error
>     since foo creation is delayed well beyond point
>     where machine's properties are set
> v3:
>   * rename property name from ram-memdev to memory-backend
>     (Paolo Bonzini <pbonzini@redhat.com>)
> 
> CC: ehabkost@redhat.com
> CC: pbonzini@redhat.com
> CC: pasic@linux.ibm.com
> ---
>   include/hw/boards.h |  2 ++
>   hw/core/machine.c   | 24 ++++++++++++++++++++++++
>   2 files changed, 26 insertions(+)
> 
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index fb1b43d5b9..7b4b6b79d7 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -4,6 +4,7 @@
>   #define HW_BOARDS_H
>   
>   #include "exec/memory.h"
> +#include "sysemu/hostmem.h"
>   #include "sysemu/blockdev.h"
>   #include "sysemu/accel.h"
>   #include "qapi/qapi-types-machine.h"
> @@ -285,6 +286,7 @@ struct MachineState {
>       bool enforce_config_section;
>       bool enable_graphics;
>       char *memory_encryption;
> +    char *ram_memdev_id;
>       DeviceMemoryState *device_memory;
>   
>       ram_addr_t ram_size;
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 84812a1d1c..1a6e485c87 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -508,6 +508,22 @@ static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
>       }
>   }
>   
> +static char *machine_get_memdev(Object *obj, Error **errp)
> +{
> +    MachineState *ms = MACHINE(obj);
> +
> +    return g_strdup(ms->ram_memdev_id);
> +}
> +
> +static void machine_set_memdev(Object *obj, const char *value, Error **errp)
> +{
> +    MachineState *ms = MACHINE(obj);
> +
> +    g_free(ms->ram_memdev_id);
> +    ms->ram_memdev_id = g_strdup(value);
> +}
> +
> +
>   static void machine_init_notify(Notifier *notifier, void *data)
>   {
>       MachineState *machine = MACHINE(qdev_get_machine());
> @@ -889,6 +905,14 @@ static void machine_initfn(Object *obj)
>                                           "Table (HMAT)", NULL);
>       }
>   
> +    object_property_add_str(obj, "memory-backend",
> +                            machine_get_memdev, machine_set_memdev,
> +                            &error_abort);
> +    object_property_set_description(obj, "memory-backend",
> +                                    "Set RAM backend"
> +                                    "Valid value is ID of hostmem based backend",
> +                                     &error_abort);
> +
>       /* Register notifier when init is done for sysbus sanity checks */
>       ms->sysbus_notifier.notify = machine_init_notify;
>       qemu_add_machine_init_done_notifier(&ms->sysbus_notifier);
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 11/79] arm/collie: use memdev for RAM

[Philippe Mathieu-Daudé]

Hi Igor,

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   - while at it add check for user supplied RAM size and error
>     out if it mismatches board expected value.
>   - introduce RAM_ADDR_UFMT to avoid build errors on 32-bit hosts
>     when specifying format string for ram_addr_t type

Since v3 the 2nd comment is not valid anymore (also in other patches 
from this series).

> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> v3:
>    * instead of RAM_ADDR_UFMT adding use size_to_str()
>       Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
>   hw/arm/collie.c | 17 ++++++++++++-----
>   1 file changed, 12 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/arm/collie.c b/hw/arm/collie.c
> index 970a4405cc..024893fc9e 100644
> --- a/hw/arm/collie.c
> +++ b/hw/arm/collie.c
> @@ -10,6 +10,7 @@
>    */
>   #include "qemu/osdep.h"
>   #include "qemu/units.h"
> +#include "qemu/cutils.h"
>   #include "hw/sysbus.h"
>   #include "hw/boards.h"
>   #include "strongarm.h"
> @@ -20,20 +21,24 @@
>   
>   static struct arm_boot_info collie_binfo = {
>       .loader_start = SA_SDCS0,
> -    .ram_size = 0x20000000,

This doesn't seem correct, this field is used do_cpu_reset() -> 
set_kernel_args() (see hw/arm/boot.c).

>   };
>   
>   static void collie_init(MachineState *machine)
>   {
>       StrongARMState *s;
>       DriveInfo *dinfo;
> -    MemoryRegion *sdram = g_new(MemoryRegion, 1);
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
> +
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
>   
>       s = sa1110_init(machine->cpu_type);
>   
> -    memory_region_allocate_system_memory(sdram, NULL, "strongarm.sdram",
> -                                         collie_binfo.ram_size);
> -    memory_region_add_subregion(get_system_memory(), SA_SDCS0, sdram);
> +    memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram);
>   
>       dinfo = drive_get(IF_PFLASH, 0, 0);
>       pflash_cfi01_register(SA_CS0, "collie.fl1", 0x02000000,
> @@ -57,6 +62,8 @@ static void collie_machine_init(MachineClass *mc)
>       mc->init = collie_init;
>       mc->ignore_memory_transaction_failures = true;
>       mc->default_cpu_type = ARM_CPU_TYPE_NAME("sa1110");
> +    mc->default_ram_size = 0x20000000;
> +    mc->default_ram_id = "strongarm.sdram";
>   }
>   
>   DEFINE_MACHINE("collie", collie_machine_init)
> 

Re: [PATCH v5 13/79] arm/digic_boards: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   remove no longer needed DigicBoardState
> 
> PS2:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 20/79] arm/mcimx6ul-evk: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>    remove no longer needed MCIMX6ULEVK
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> CC: jcd@tribudubois.net
> ---
>   hw/arm/mcimx6ul-evk.c | 25 +++++++++----------------
>   1 file changed, 9 insertions(+), 16 deletions(-)
> 
> diff --git a/hw/arm/mcimx6ul-evk.c b/hw/arm/mcimx6ul-evk.c
> index e90b393a44..23a71ed378 100644
> --- a/hw/arm/mcimx6ul-evk.c
> +++ b/hw/arm/mcimx6ul-evk.c
> @@ -19,15 +19,10 @@
>   #include "qemu/error-report.h"
>   #include "sysemu/qtest.h"
>   
> -typedef struct {
> -    FslIMX6ULState soc;
> -    MemoryRegion ram;
> -} MCIMX6ULEVK;
> -
>   static void mcimx6ul_evk_init(MachineState *machine)
>   {
>       static struct arm_boot_info boot_info;
> -    MCIMX6ULEVK *s = g_new0(MCIMX6ULEVK, 1);
> +    FslIMX6ULState *s;
>       int i;
>   
>       if (machine->ram_size > FSL_IMX6UL_MMDC_SIZE) {
> @@ -43,15 +38,12 @@ static void mcimx6ul_evk_init(MachineState *machine)
>           .nb_cpus = machine->smp.cpus,
>       };
>   
> -    object_initialize_child(OBJECT(machine), "soc", &s->soc,  sizeof(s->soc),
> -                            TYPE_FSL_IMX6UL, &error_fatal, NULL);
> -
> -    object_property_set_bool(OBJECT(&s->soc), true, "realized", &error_fatal);
> +    s = FSL_IMX6UL(object_new(TYPE_FSL_IMX6UL));
> +    object_property_add_child(OBJECT(machine), "soc", OBJECT(s), &error_fatal);
> +    object_property_set_bool(OBJECT(s), true, "realized", &error_fatal);
>   
> -    memory_region_allocate_system_memory(&s->ram, NULL, "mcimx6ul-evk.ram",
> -                                         machine->ram_size);
> -    memory_region_add_subregion(get_system_memory(),
> -                                FSL_IMX6UL_MMDC_ADDR, &s->ram);
> +    memory_region_add_subregion(get_system_memory(), FSL_IMX6UL_MMDC_ADDR,
> +                                machine->ram);
>   
>       for (i = 0; i < FSL_IMX6UL_NUM_USDHCS; i++) {
>           BusState *bus;
> @@ -61,7 +53,7 @@ static void mcimx6ul_evk_init(MachineState *machine)
>   
>           di = drive_get_next(IF_SD);
>           blk = di ? blk_by_legacy_dinfo(di) : NULL;
> -        bus = qdev_get_child_bus(DEVICE(&s->soc.usdhc[i]), "sd-bus");
> +        bus = qdev_get_child_bus(DEVICE(&s->usdhc[i]), "sd-bus");
>           carddev = qdev_create(bus, TYPE_SD_CARD);
>           qdev_prop_set_drive(carddev, "drive", blk, &error_fatal);
>           object_property_set_bool(OBJECT(carddev), true,
> @@ -69,7 +61,7 @@ static void mcimx6ul_evk_init(MachineState *machine)
>       }
>   
>       if (!qtest_enabled()) {
> -        arm_load_kernel(&s->soc.cpu, machine, &boot_info);
> +        arm_load_kernel(&s->cpu, machine, &boot_info);
>       }
>   }
>   
> @@ -78,5 +70,6 @@ static void mcimx6ul_evk_machine_init(MachineClass *mc)
>       mc->desc = "Freescale i.MX6UL Evaluation Kit (Cortex A7)";
>       mc->init = mcimx6ul_evk_init;
>       mc->max_cpus = FSL_IMX6UL_NUM_CPUS;
> +    mc->default_ram_id = "mcimx6ul-evk.ram";
>   }
>   DEFINE_MACHINE("mcimx6ul-evk", mcimx6ul_evk_machine_init)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 26/79] arm/omap_sx1: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:33 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> ---
>   hw/arm/omap_sx1.c | 20 +++++++++++++++-----
>   1 file changed, 15 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/arm/omap_sx1.c b/hw/arm/omap_sx1.c
> index be245714db..2bebab4171 100644
> --- a/hw/arm/omap_sx1.c
> +++ b/hw/arm/omap_sx1.c
> @@ -35,6 +35,7 @@
>   #include "sysemu/qtest.h"
>   #include "exec/address-spaces.h"
>   #include "cpu.h"
> +#include "qemu/cutils.h"
>   
>   /*****************************************************************************/
>   /* Siemens SX1 Cellphone V1 */
> @@ -102,8 +103,8 @@ static struct arm_boot_info sx1_binfo = {
>   static void sx1_init(MachineState *machine, const int version)
>   {
>       struct omap_mpu_state_s *mpu;
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>       MemoryRegion *address_space = get_system_memory();
> -    MemoryRegion *dram = g_new(MemoryRegion, 1);
>       MemoryRegion *flash = g_new(MemoryRegion, 1);
>       MemoryRegion *cs = g_new(MemoryRegion, 4);
>       static uint32_t cs0val = 0x00213090;
> @@ -115,15 +116,20 @@ static void sx1_init(MachineState *machine, const int version)
>       uint32_t flash_size = flash0_size;
>       int be;
>   
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
> +
>       if (version == 2) {
>           flash_size = flash2_size;
>       }
>   
> -    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
> -                                         sx1_binfo.ram_size);
> -    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, dram);
> +    memory_region_add_subregion(address_space, OMAP_EMIFF_BASE, machine->ram);
>   
> -    mpu = omap310_mpu_init(dram, machine->cpu_type);
> +    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
>   
>       /* External Flash (EMIFS) */
>       memory_region_init_ram(flash, NULL, "omap_sx1.flash0-0", flash_size,
> @@ -223,6 +229,8 @@ static void sx1_machine_v2_class_init(ObjectClass *oc, void *data)
>       mc->init = sx1_init_v2;
>       mc->ignore_memory_transaction_failures = true;
>       mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
> +    mc->default_ram_size = sdram_size;
> +    mc->default_ram_id = "omap1.dram";
>   }
>   
>   static const TypeInfo sx1_machine_v2_type = {
> @@ -239,6 +247,8 @@ static void sx1_machine_v1_class_init(ObjectClass *oc, void *data)
>       mc->init = sx1_init_v1;
>       mc->ignore_memory_transaction_failures = true;
>       mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
> +    mc->default_ram_size = sdram_size;
> +    mc->default_ram_id = "omap1.dram";
>   }
>   
>   static const TypeInfo sx1_machine_v1_type = {
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 27/79] arm/palm: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Andrew Jones <drjones@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> 
> CC: balrogg@gmail.com
> ---
>   hw/arm/palm.c | 20 ++++++++++++++------
>   1 file changed, 14 insertions(+), 6 deletions(-)
> 
> diff --git a/hw/arm/palm.c b/hw/arm/palm.c
> index 72eca8cc55..388b2629a5 100644
> --- a/hw/arm/palm.c
> +++ b/hw/arm/palm.c
> @@ -31,6 +31,7 @@
>   #include "hw/loader.h"
>   #include "exec/address-spaces.h"
>   #include "cpu.h"
> +#include "qemu/cutils.h"
>   
>   static uint64_t static_read(void *opaque, hwaddr offset, unsigned size)
>   {
> @@ -181,7 +182,6 @@ static void palmte_gpio_setup(struct omap_mpu_state_s *cpu)
>   
>   static struct arm_boot_info palmte_binfo = {
>       .loader_start = OMAP_EMIFF_BASE,
> -    .ram_size = 0x02000000,

Again, this is incorrect. Used by hw/arm/boot::do_cpu_reset().

>       .board_id = 0x331,
>   };
>   
> @@ -195,15 +195,21 @@ static void palmte_init(MachineState *machine)
>       static uint32_t cs2val = 0x0000e1a0;
>       static uint32_t cs3val = 0xe1a0e1a0;
>       int rom_size, rom_loaded = 0;
> -    MemoryRegion *dram = g_new(MemoryRegion, 1);
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>       MemoryRegion *flash = g_new(MemoryRegion, 1);
>       MemoryRegion *cs = g_new(MemoryRegion, 4);
>   
> -    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
> -                                         palmte_binfo.ram_size);
> -    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE, dram);
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
> +
> +    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE,
> +                                machine->ram);
>   
> -    mpu = omap310_mpu_init(dram, machine->cpu_type);
> +    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
>   
>       /* External Flash (EMIFS) */
>       memory_region_init_ram(flash, NULL, "palmte.flash", flash_size,
> @@ -265,6 +271,8 @@ static void palmte_machine_init(MachineClass *mc)
>       mc->init = palmte_init;
>       mc->ignore_memory_transaction_failures = true;
>       mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
> +    mc->default_ram_size = 0x02000000;
> +    mc->default_ram_id = "omap1.dram";
>   }
>   
>   DEFINE_MACHINE("cheetah", palmte_machine_init)
> 

Re: [PATCH v5 34/79] arm/xilinx_zynq: drop RAM size fixup

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> If user provided non-sense RAM size, board will complain and
> continue running with max RAM size supported.
> Also RAM is going to be allocated by generic code, so it won't be
> possible for board to fix things up for user.
> 
> Make it error message and exit to force user fix CLI,
> instead of accepting non-sense CLI values.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> ---
>   hw/arm/xilinx_zynq.c | 16 ++++++++--------
>   1 file changed, 8 insertions(+), 8 deletions(-)
> 
> diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
> index 3a0fa5b23f..df950fc400 100644
> --- a/hw/arm/xilinx_zynq.c
> +++ b/hw/arm/xilinx_zynq.c
> @@ -158,7 +158,6 @@ static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
>   
>   static void zynq_init(MachineState *machine)
>   {
> -    ram_addr_t ram_size = machine->ram_size;
>       ARMCPU *cpu;
>       MemoryRegion *address_space_mem = get_system_memory();
>       MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
> @@ -168,6 +167,12 @@ static void zynq_init(MachineState *machine)
>       qemu_irq pic[64];
>       int n;
>   
> +    /* max 2GB ram */
> +    if (machine->ram_size > 0x80000000) {
> +        error_report("RAM size more than %d is not supported", 0x80000000);

Eh? Maybe:

        if (machine->ram_size > 2 * GiB) {
            error_report("RAM size more than 2 GiB is not supported");

> +        exit(EXIT_FAILURE);
> +    }
> +
>       cpu = ARM_CPU(object_new(machine->cpu_type));
>   
>       /* By default A9 CPUs have EL3 enabled.  This board does not
> @@ -184,14 +189,9 @@ static void zynq_init(MachineState *machine)
>                               &error_fatal);
>       object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
>   
> -    /* max 2GB ram */
> -    if (ram_size > 0x80000000) {
> -        ram_size = 0x80000000;
> -    }
> -
>       /* DDR remapped to address zero.  */
>       memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
> -                                         ram_size);
> +                                         machine->ram_size);
>       memory_region_add_subregion(address_space_mem, 0, ext_ram);
>   
>       /* 256K of on-chip memory */
> @@ -300,7 +300,7 @@ static void zynq_init(MachineState *machine)
>       sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
>       sysbus_mmio_map(busdev, 0, 0xF8007000);
>   
> -    zynq_binfo.ram_size = ram_size;
> +    zynq_binfo.ram_size = machine->ram_size;
>       zynq_binfo.nb_cpus = 1;
>       zynq_binfo.board_id = 0xd32;
>       zynq_binfo.loader_start = 0;
> 

Re: [PATCH v5 42/79] x86/microvm: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
> ---
> CC: slp@redhat.com
> CC: pbonzini@redhat.com
> CC: mst@redhat.com
> CC: rth@twiddle.net
> CC: ehabkost@redhat.com
> ---
>   hw/i386/microvm.c | 12 +++++-------
>   1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
> index d23485108d..38d8e51703 100644
> --- a/hw/i386/microvm.c
> +++ b/hw/i386/microvm.c
> @@ -167,7 +167,7 @@ static void microvm_memory_init(MicrovmMachineState *mms)
>   {
>       MachineState *machine = MACHINE(mms);
>       X86MachineState *x86ms = X86_MACHINE(mms);
> -    MemoryRegion *ram, *ram_below_4g, *ram_above_4g;
> +    MemoryRegion *ram_below_4g, *ram_above_4g;
>       MemoryRegion *system_memory = get_system_memory();
>       FWCfgState *fw_cfg;
>       ram_addr_t lowmem;
> @@ -214,12 +214,8 @@ static void microvm_memory_init(MicrovmMachineState *mms)
>           x86ms->below_4g_mem_size = machine->ram_size;
>       }
>   
> -    ram = g_malloc(sizeof(*ram));
> -    memory_region_allocate_system_memory(ram, NULL, "microvm.ram",
> -                                         machine->ram_size);
> -
>       ram_below_4g = g_malloc(sizeof(*ram_below_4g));
> -    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", ram,
> +    memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram,
>                                0, x86ms->below_4g_mem_size);
>       memory_region_add_subregion(system_memory, 0, ram_below_4g);
>   
> @@ -227,7 +223,8 @@ static void microvm_memory_init(MicrovmMachineState *mms)
>   
>       if (x86ms->above_4g_mem_size > 0) {
>           ram_above_4g = g_malloc(sizeof(*ram_above_4g));
> -        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g", ram,
> +        memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
> +                                 machine->ram,
>                                    x86ms->below_4g_mem_size,
>                                    x86ms->above_4g_mem_size);
>           memory_region_add_subregion(system_memory, 0x100000000ULL,
> @@ -502,6 +499,7 @@ static void microvm_class_init(ObjectClass *oc, void *data)
>       mc->auto_enable_numa_with_memhp = false;
>       mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
>       mc->nvdimm_supported = false;
> +    mc->default_ram_id = "microvm.ram";
>   
>       /* Avoid relying too much on kernel components */
>       mc->default_kernel_irqchip_split = true;
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 44/79] lm32/lm32_boards: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> PS:
>   while at it add check for user supplied RAM size and error
>   out if it mismatches board expected value.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v2:
>    * fix format string causing build failure on 32-bit host
>      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> 
> CC: michael@walle.cc
> CC: philmd@redhat.com
> ---
>   hw/lm32/lm32_boards.c | 39 ++++++++++++++++++++++++++-------------
>   1 file changed, 26 insertions(+), 13 deletions(-)
> 
> diff --git a/hw/lm32/lm32_boards.c b/hw/lm32/lm32_boards.c
> index d1894adab8..4e0a98c117 100644
> --- a/hw/lm32/lm32_boards.c
> +++ b/hw/lm32/lm32_boards.c
> @@ -19,6 +19,7 @@
>   
>   #include "qemu/osdep.h"
>   #include "qemu/units.h"
> +#include "qemu/cutils.h"
>   #include "qemu/error-report.h"
>   #include "cpu.h"
>   #include "hw/sysbus.h"
> @@ -75,22 +76,28 @@ static void main_cpu_reset(void *opaque)
>   
>   static void lm32_evr_init(MachineState *machine)
>   {
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>       const char *kernel_filename = machine->kernel_filename;
>       LM32CPU *cpu;
>       CPULM32State *env;
>       DriveInfo *dinfo;
>       MemoryRegion *address_space_mem =  get_system_memory();
> -    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
>       qemu_irq irq[32];
>       ResetInfo *reset_info;
>       int i;
>   
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
> +
>       /* memory map */
>       hwaddr flash_base  = 0x04000000;
>       size_t flash_sector_size       = 256 * KiB;
>       size_t flash_size              = 32 * MiB;
>       hwaddr ram_base    = 0x08000000;
> -    size_t ram_size                = 64 * MiB;
>       hwaddr timer0_base = 0x80002000;
>       hwaddr uart0_base  = 0x80006000;
>       hwaddr timer1_base = 0x8000a000;
> @@ -107,9 +114,7 @@ static void lm32_evr_init(MachineState *machine)
>   
>       reset_info->flash_base = flash_base;
>   
> -    memory_region_allocate_system_memory(phys_ram, NULL, "lm32_evr.sdram",
> -                                         ram_size);
> -    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
> +    memory_region_add_subregion(address_space_mem, ram_base, machine->ram);
>   
>       dinfo = drive_get(IF_PFLASH, 0, 0);
>       /* Spansion S29NS128P */
> @@ -144,7 +149,7 @@ static void lm32_evr_init(MachineState *machine)
>   
>           if (kernel_size < 0) {
>               kernel_size = load_image_targphys(kernel_filename, ram_base,
> -                                              ram_size);
> +                                              machine->ram_size);
>               reset_info->bootstrap_pc = ram_base;
>           }
>   
> @@ -159,6 +164,7 @@ static void lm32_evr_init(MachineState *machine)
>   
>   static void lm32_uclinux_init(MachineState *machine)
>   {
> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>       const char *kernel_filename = machine->kernel_filename;
>       const char *kernel_cmdline = machine->kernel_cmdline;
>       const char *initrd_filename = machine->initrd_filename;
> @@ -166,18 +172,23 @@ static void lm32_uclinux_init(MachineState *machine)
>       CPULM32State *env;
>       DriveInfo *dinfo;
>       MemoryRegion *address_space_mem =  get_system_memory();
> -    MemoryRegion *phys_ram = g_new(MemoryRegion, 1);
>       qemu_irq irq[32];
>       HWSetup *hw;
>       ResetInfo *reset_info;
>       int i;
>   
> +    if (machine->ram_size != mc->default_ram_size) {
> +        char *sz = size_to_str(mc->default_ram_size);
> +        error_report("Invalid RAM size, should be %s", sz);
> +        g_free(sz);
> +        exit(EXIT_FAILURE);
> +    }
> +
>       /* memory map */
>       hwaddr flash_base   = 0x04000000;
>       size_t flash_sector_size        = 256 * KiB;
>       size_t flash_size               = 32 * MiB;
>       hwaddr ram_base     = 0x08000000;
> -    size_t ram_size                 = 64 * MiB;
>       hwaddr uart0_base   = 0x80000000;
>       hwaddr timer0_base  = 0x80002000;
>       hwaddr timer1_base  = 0x80010000;
> @@ -200,9 +211,7 @@ static void lm32_uclinux_init(MachineState *machine)
>   
>       reset_info->flash_base = flash_base;
>   
> -    memory_region_allocate_system_memory(phys_ram, NULL,
> -                                         "lm32_uclinux.sdram", ram_size);
> -    memory_region_add_subregion(address_space_mem, ram_base, phys_ram);
> +    memory_region_add_subregion(address_space_mem, ram_base, machine->ram);
>   
>       dinfo = drive_get(IF_PFLASH, 0, 0);
>       /* Spansion S29NS128P */
> @@ -238,7 +247,7 @@ static void lm32_uclinux_init(MachineState *machine)
>   
>           if (kernel_size < 0) {
>               kernel_size = load_image_targphys(kernel_filename, ram_base,
> -                                              ram_size);
> +                                              machine->ram_size);
>               reset_info->bootstrap_pc = ram_base;
>           }
>   
> @@ -252,7 +261,7 @@ static void lm32_uclinux_init(MachineState *machine)
>       hw = hwsetup_init();
>       hwsetup_add_cpu(hw, "LM32", 75000000);
>       hwsetup_add_flash(hw, "flash", flash_base, flash_size);
> -    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, ram_size);
> +    hwsetup_add_ddr_sdram(hw, "ddr_sdram", ram_base, machine->ram_size);
>       hwsetup_add_timer(hw, "timer0", timer0_base, timer0_irq);
>       hwsetup_add_timer(hw, "timer1_dev_only", timer1_base, timer1_irq);
>       hwsetup_add_timer(hw, "timer2_dev_only", timer2_base, timer2_irq);
> @@ -288,6 +297,8 @@ static void lm32_evr_class_init(ObjectClass *oc, void *data)
>       mc->init = lm32_evr_init;
>       mc->is_default = 1;
>       mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
> +    mc->default_ram_size = 64 * MiB;
> +    mc->default_ram_id = "lm32_evr.sdram";
>   }
>   
>   static const TypeInfo lm32_evr_type = {
> @@ -304,6 +315,8 @@ static void lm32_uclinux_class_init(ObjectClass *oc, void *data)
>       mc->init = lm32_uclinux_init;
>       mc->is_default = 0;
>       mc->default_cpu_type = LM32_CPU_TYPE_NAME("lm32-full");
> +    mc->default_ram_size = 64 * MiB;
> +    mc->default_ram_id = "lm32_uclinux.sdram";
>   }
>   
>   static const TypeInfo lm32_uclinux_type = {
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 52/79] mips/mips_fulong2e: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: philmd@redhat.com
> CC: amarkovic@wavecomp.com
> CC: aurelien@aurel32.net
> CC: aleksandar.rikalo@rt-rk.com
> ---
>   hw/mips/mips_fulong2e.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
> index cf00211bd2..c373ab066b 100644
> --- a/hw/mips/mips_fulong2e.c
> +++ b/hw/mips/mips_fulong2e.c
> @@ -294,7 +294,6 @@ static void mips_fulong2e_init(MachineState *machine)
>       const char *initrd_filename = machine->initrd_filename;
>       char *filename;
>       MemoryRegion *address_space_mem = get_system_memory();
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *bios = g_new(MemoryRegion, 1);
>       long bios_size;
>       uint8_t *spd_data;
> @@ -320,13 +319,11 @@ static void mips_fulong2e_init(MachineState *machine)
>       }
>   
>       /* allocate RAM */
> -    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram",
> -                                         machine->ram_size);
>       memory_region_init_ram(bios, NULL, "fulong2e.bios", BIOS_SIZE,
>                              &error_fatal);
>       memory_region_set_readonly(bios, true);
>   
> -    memory_region_add_subregion(address_space_mem, 0, ram);
> +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
>       memory_region_add_subregion(address_space_mem, 0x1fc00000LL, bios);
>   
>       /*
> @@ -402,6 +399,7 @@ static void mips_fulong2e_machine_init(MachineClass *mc)
>       mc->block_default_type = IF_IDE;
>       mc->default_cpu_type = MIPS_CPU_TYPE_NAME("Loongson-2E");
>       mc->default_ram_size = 256 * MiB;
> +    mc->default_ram_id = "fulong2e.ram";
>   }
>   
>   DEFINE_MACHINE("fulong2e", mips_fulong2e_machine_init)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 24/79] arm/musicpal: use memdev for RAM

[Richard Henderson]

On 2/18/20 12:59 AM, Igor Mammedov wrote:
>> If for some reason you need to re-spin this series again, and considering my
>> comment re arm/imx25_pdk, I think it would be worthwhile to create a common
>> helper for this:
>>
> 
> This check is temporary, I plan to replace it with a similar
> check in generic machine code and clean it up. The reason it
> is not done in this series is that generalizing it is not
> related to this series. Hence I'd prefer to keep current
> approach in this series to avoid touching already reviewed
> patches and generalize it later.

Fair enough.


r~

Re: [PATCH v5 51/79] mips/mips_fulong2e: drop RAM size fixup

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> If user provided non-sense RAM size, board will complain and
> continue running with max RAM size supported.
> Also RAM is going to be allocated by generic code, so it won't be
> possible for board to fix things up for user.
> 
> Make it error message and exit to force user fix CLI,
> instead of accepting non-sense CLI values.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> v2:
>   * fix format string cousing build failure on 32-bit host
>     (Philippe Mathieu-Daudé <philmd@redhat.com>)
> v3:
>   * since size is ifxed, just hardcode 256Mb value as text
>     in error message
>     (BALATON Zoltan <balaton@eik.bme.hu>)
> 
> CC: philmd@redhat.com
> CC: amarkovic@wavecomp.com
> CC: aurelien@aurel32.net
> CC: aleksandar.rikalo@rt-rk.com
> CC: balaton@eik.bme.hu
> ---
>   hw/mips/mips_fulong2e.c | 13 ++++++++-----
>   1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
> index 2e043cbb98..cf00211bd2 100644
> --- a/hw/mips/mips_fulong2e.c
> +++ b/hw/mips/mips_fulong2e.c
> @@ -296,7 +296,6 @@ static void mips_fulong2e_init(MachineState *machine)
>       MemoryRegion *address_space_mem = get_system_memory();
>       MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *bios = g_new(MemoryRegion, 1);
> -    ram_addr_t ram_size = machine->ram_size;
>       long bios_size;
>       uint8_t *spd_data;
>       Error *err = NULL;
> @@ -315,10 +314,14 @@ static void mips_fulong2e_init(MachineState *machine)
>       qemu_register_reset(main_cpu_reset, cpu);
>   
>       /* TODO: support more than 256M RAM as highmem */
> -    ram_size = 256 * MiB;
> +    if (machine->ram_size != 256 * MiB) {
> +        error_report("Invalid RAM size, should be 256MB");
> +        exit(EXIT_FAILURE);
> +    }

Thanks you didn't remove the TODO.

The patch keeps the same behavior, so:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

>   
>       /* allocate RAM */
> -    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram", ram_size);
> +    memory_region_allocate_system_memory(ram, NULL, "fulong2e.ram",
> +                                         machine->ram_size);
>       memory_region_init_ram(bios, NULL, "fulong2e.bios", BIOS_SIZE,
>                              &error_fatal);
>       memory_region_set_readonly(bios, true);
> @@ -332,7 +335,7 @@ static void mips_fulong2e_init(MachineState *machine)
>        */
>   
>       if (kernel_filename) {
> -        loaderparams.ram_size = ram_size;
> +        loaderparams.ram_size = machine->ram_size;
>           loaderparams.kernel_filename = kernel_filename;
>           loaderparams.kernel_cmdline = kernel_cmdline;
>           loaderparams.initrd_filename = initrd_filename;
> @@ -378,7 +381,7 @@ static void mips_fulong2e_init(MachineState *machine)
>       }
>   
>       /* Populate SPD eeprom data */
> -    spd_data = spd_data_generate(DDR, ram_size, &err);
> +    spd_data = spd_data_generate(DDR, machine->ram_size, &err);
>       if (err) {
>           warn_report_err(err);
>       }
> 

Re: [PATCH v5 67/79] ppc/spapr: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> ---
>   hw/ppc/spapr.c | 8 +++-----
>   1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index c9b2e0a5e0..4d90f99195 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -2634,7 +2634,6 @@ static void spapr_machine_init(MachineState *machine)
>       PCIHostState *phb;
>       int i;
>       MemoryRegion *sysmem = get_system_memory();
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       hwaddr node0_size = spapr_node0_size(machine);
>       long load_limit, fw_size;
>       char *filename;
> @@ -2813,10 +2812,8 @@ static void spapr_machine_init(MachineState *machine)
>           kvmppc_enable_h_page_init();
>       }
>   
> -    /* allocate RAM */
> -    memory_region_allocate_system_memory(ram, NULL, "ppc_spapr.ram",
> -                                         machine->ram_size);
> -    memory_region_add_subregion(sysmem, 0, ram);
> +    /* map RAM */
> +    memory_region_add_subregion(sysmem, 0, machine->ram);
>   
>       /* always allocate the device memory information */
>       machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
> @@ -4400,6 +4397,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
>       mc->no_parallel = 1;
>       mc->default_boot_order = "";
>       mc->default_ram_size = 512 * MiB;
> +    mc->default_ram_id = "ppc_spapr.ram";
>       mc->default_display = "std";
>       mc->kvm_type = spapr_kvm_type;
>       machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SPAPR_PCI_HOST_BRIDGE);
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 72/79] remove no longer used memory_region_allocate_system_memory()

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> all boards were switched to using memdev backend for main RAM,
> so we can drop no longer used memory_region_allocate_system_memory()
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> ---
> CC: ehabkost@redhat.com
> CC: pbonzini@redhat.com
> ---
>   include/hw/boards.h | 32 --------------------------------
>   hw/core/numa.c      | 34 ----------------------------------
>   2 files changed, 66 deletions(-)
> 
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index ae2b60fb5e..142b86d0ae 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -12,38 +12,6 @@
>   #include "qom/object.h"
>   #include "hw/core/cpu.h"
>   
> -/**
> - * memory_region_allocate_system_memory - Allocate a board's main memory
> - * @mr: the #MemoryRegion to be initialized
> - * @owner: the object that tracks the region's reference count
> - * @name: name of the memory region
> - * @ram_size: size of the region in bytes
> - *
> - * This function allocates the main memory for a board model, and
> - * initializes @mr appropriately. It also arranges for the memory
> - * to be migrated (by calling vmstate_register_ram_global()).
> - *
> - * Memory allocated via this function will be backed with the memory
> - * backend the user provided using "-mem-path" or "-numa node,memdev=..."
> - * if appropriate; this is typically used to cause host huge pages to be
> - * used. This function should therefore be called by a board exactly once,
> - * for the primary or largest RAM area it implements.
> - *
> - * For boards where the major RAM is split into two parts in the memory
> - * map, you can deal with this by calling memory_region_allocate_system_memory()
> - * once to get a MemoryRegion with enough RAM for both parts, and then
> - * creating alias MemoryRegions via memory_region_init_alias() which
> - * alias into different parts of the RAM MemoryRegion and can be mapped
> - * into the memory map in the appropriate places.
> - *
> - * Smaller pieces of memory (display RAM, static RAMs, etc) don't need
> - * to be backed via the -mem-path memory backend and can simply
> - * be created via memory_region_init_ram().
> - */
> -void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
> -                                          const char *name,
> -                                          uint64_t ram_size);
> -
>   #define TYPE_MACHINE_SUFFIX "-machine"
>   
>   /* Machine class name that needs to be used for class-name-based machine
> diff --git a/hw/core/numa.c b/hw/core/numa.c
> index e6baf2c33e..316bc50d75 100644
> --- a/hw/core/numa.c
> +++ b/hw/core/numa.c
> @@ -806,40 +806,6 @@ void numa_cpu_pre_plug(const CPUArchId *slot, DeviceState *dev, Error **errp)
>       }
>   }
>   
> -static void allocate_system_memory_nonnuma(MemoryRegion *mr, Object *owner,
> -                                           const char *name,
> -                                           uint64_t ram_size)
> -{
> -    if (mem_path) {
> -#ifdef __linux__
> -        memory_region_init_ram_from_file(mr, owner, name, ram_size, 0, 0,
> -                                         mem_path, &error_fatal);
> -#else
> -        fprintf(stderr, "-mem-path not supported on this host\n");
> -        exit(1);
> -#endif
> -    } else {
> -        memory_region_init_ram_nomigrate(mr, owner, name, ram_size, &error_fatal);
> -    }
> -    vmstate_register_ram_global(mr);
> -}
> -
> -void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
> -                                          const char *name,
> -                                          uint64_t ram_size)
> -{
> -    MachineState *ms = MACHINE(qdev_get_machine());
> -
> -    if (ms->numa_state == NULL ||
> -        ms->numa_state->num_nodes == 0 || numa_uses_legacy_mem()) {
> -        allocate_system_memory_nonnuma(mr, owner, name, ram_size);
> -        return;
> -    }
> -
> -    memory_region_init(mr, owner, name, ram_size);
> -    numa_init_memdev_container(ms, mr);
> -}
> -
>   static void numa_stat_memory_devices(NumaNodeMem node_mem[])
>   {
>       MemoryDeviceInfoList *info_list = qmp_memory_device_list();
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 48/79] m68k/mcf5208: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
>   hw/m68k/mcf5208.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/m68k/mcf5208.c b/hw/m68k/mcf5208.c
> index a999c21982..31622c71cb 100644
> --- a/hw/m68k/mcf5208.c
> +++ b/hw/m68k/mcf5208.c
> @@ -234,7 +234,6 @@ static void mcf5208evb_init(MachineState *machine)
>       qemu_irq *pic;
>       MemoryRegion *address_space_mem = get_system_memory();
>       MemoryRegion *rom = g_new(MemoryRegion, 1);
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *sram = g_new(MemoryRegion, 1);
>   
>       cpu = M68K_CPU(cpu_create(machine->cpu_type));
> @@ -249,8 +248,7 @@ static void mcf5208evb_init(MachineState *machine)
>       memory_region_add_subregion(address_space_mem, 0x00000000, rom);
>   
>       /* DRAM at 0x40000000 */
> -    memory_region_allocate_system_memory(ram, NULL, "mcf5208.ram", ram_size);
> -    memory_region_add_subregion(address_space_mem, 0x40000000, ram);
> +    memory_region_add_subregion(address_space_mem, 0x40000000, machine->ram);
>   
>       /* Internal SRAM.  */
>       memory_region_init_ram(sram, NULL, "mcf5208.sram", 16 * KiB, &error_fatal);
> @@ -354,6 +352,7 @@ static void mcf5208evb_machine_init(MachineClass *mc)
>       mc->init = mcf5208evb_init;
>       mc->is_default = 1;
>       mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5208");
> +    mc->default_ram_id = "mcf5208.ram";
>   }
>   
>   DEFINE_MACHINE("mcf5208evb", mcf5208evb_machine_init)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 46/79] m68k/an5206: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---
>   hw/m68k/an5206.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/m68k/an5206.c b/hw/m68k/an5206.c
> index bed43a936d..846f4e40c6 100644
> --- a/hw/m68k/an5206.c
> +++ b/hw/m68k/an5206.c
> @@ -33,7 +33,6 @@ static void an5206_init(MachineState *machine)
>       uint64_t elf_entry;
>       hwaddr entry;
>       MemoryRegion *address_space_mem = get_system_memory();
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *sram = g_new(MemoryRegion, 1);
>   
>       cpu = M68K_CPU(cpu_create(machine->cpu_type));
> @@ -46,8 +45,7 @@ static void an5206_init(MachineState *machine)
>       env->rambar0 = AN5206_RAMBAR_ADDR | 1;
>   
>       /* DRAM at address zero */
> -    memory_region_allocate_system_memory(ram, NULL, "an5206.ram", ram_size);
> -    memory_region_add_subregion(address_space_mem, 0, ram);
> +    memory_region_add_subregion(address_space_mem, 0, machine->ram);
>   
>       /* Internal SRAM.  */
>       memory_region_init_ram(sram, NULL, "an5206.sram", 512, &error_fatal);
> @@ -89,6 +87,7 @@ static void an5206_machine_init(MachineClass *mc)
>       mc->desc = "Arnewsh 5206";
>       mc->init = an5206_init;
>       mc->default_cpu_type = M68K_CPU_TYPE_NAME("m5206");
> +    mc->default_ram_id = "an5206.ram";
>   }
>   
>   DEFINE_MACHINE("an5206", an5206_machine_init)
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 60/79] ppc/mac_newworld: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
>   hw/ppc/mac_newworld.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/ppc/mac_newworld.c b/hw/ppc/mac_newworld.c
> index 464d012103..b8189bf7a4 100644
> --- a/hw/ppc/mac_newworld.c
> +++ b/hw/ppc/mac_newworld.c
> @@ -118,7 +118,7 @@ static void ppc_core99_init(MachineState *machine)
>       char *filename;
>       IrqLines *openpic_irqs;
>       int linux_boot, i, j, k;
> -    MemoryRegion *ram = g_new(MemoryRegion, 1), *bios = g_new(MemoryRegion, 1);
> +    MemoryRegion *bios = g_new(MemoryRegion, 1);
>       hwaddr kernel_base, initrd_base, cmdline_base = 0;
>       long kernel_size, initrd_size;
>       UNINHostState *uninorth_pci;
> @@ -152,8 +152,7 @@ static void ppc_core99_init(MachineState *machine)
>       }
>   
>       /* allocate RAM */
> -    memory_region_allocate_system_memory(ram, NULL, "ppc_core99.ram", ram_size);
> -    memory_region_add_subregion(get_system_memory(), 0, ram);
> +    memory_region_add_subregion(get_system_memory(), 0, machine->ram);
>   
>       /* allocate and load BIOS */
>       memory_region_init_ram(bios, NULL, "ppc_core99.bios", BIOS_SIZE,
> @@ -586,6 +585,7 @@ static void core99_machine_class_init(ObjectClass *oc, void *data)
>   #else
>       mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("7400_v2.9");
>   #endif
> +    mc->default_ram_id = "ppc_core99.ram";
>       mc->ignore_boot_device_suffixes = true;
>       fwc->get_dev_path = core99_fw_dev_path;
>   }
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 61/79] ppc/mac_oldworld: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> memory_region_allocate_system_memory() API is going away, so
> replace it with memdev allocated MemoryRegion. The later is
> initialized by generic code, so board only needs to opt in
> to memdev scheme by providing
>    MachineClass::default_ram_id
> and using MachineState::ram instead of manually initializing
> RAM memory region.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: David Gibson <david@gibson.dropbear.id.au>
> Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
>   hw/ppc/mac_oldworld.c | 6 ++----
>   1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/ppc/mac_oldworld.c b/hw/ppc/mac_oldworld.c
> index 7318d7e9b4..66e434bba3 100644
> --- a/hw/ppc/mac_oldworld.c
> +++ b/hw/ppc/mac_oldworld.c
> @@ -91,7 +91,6 @@ static void ppc_heathrow_init(MachineState *machine)
>       CPUPPCState *env = NULL;
>       char *filename;
>       int linux_boot, i;
> -    MemoryRegion *ram = g_new(MemoryRegion, 1);
>       MemoryRegion *bios = g_new(MemoryRegion, 1);
>       uint32_t kernel_base, initrd_base, cmdline_base = 0;
>       int32_t kernel_size, initrd_size;
> @@ -127,9 +126,7 @@ static void ppc_heathrow_init(MachineState *machine)
>           exit(1);
>       }
>   
> -    memory_region_allocate_system_memory(ram, NULL, "ppc_heathrow.ram",
> -                                         ram_size);
> -    memory_region_add_subregion(sysmem, 0, ram);
> +    memory_region_add_subregion(sysmem, 0, machine->ram);
>   
>       /* allocate and load BIOS */
>       memory_region_init_ram(bios, NULL, "ppc_heathrow.bios", BIOS_SIZE,
> @@ -446,6 +443,7 @@ static void heathrow_class_init(ObjectClass *oc, void *data)
>       mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("750_v3.1");
>       mc->default_display = "std";
>       mc->ignore_boot_device_suffixes = true;
> +    mc->default_ram_id = "ppc_heathrow.ram";
>       fwc->get_dev_path = heathrow_fw_dev_path;
>   }
>   
> 

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v5 79/79] tests:numa-test: use explicit memdev to specify node RAM

[Philippe Mathieu-Daudé]

On 2/17/20 6:34 PM, Igor Mammedov wrote:
> Follow up patches will remove automatic RAM distribution
> between nodes and will make default machine types require
> "memdev" option instead of legacy "mem" option.

Can we keep this patch for the follow up?

> 
> Make tests to follow new rules and add an additional test
> for legacy "mem" option on old machine type, to make sure
> it won't regress in the future.
> 
> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> Acked-by: Thomas Huth <thuth@redhat.com>
> ---

Re: [PATCH v5 79/79] tests:numa-test: use explicit memdev to specify node RAM

[Igor Mammedov]

On Tue, 18 Feb 2020 18:51:34 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/17/20 6:34 PM, Igor Mammedov wrote:
> > Follow up patches will remove automatic RAM distribution
> > between nodes and will make default machine types require
> > "memdev" option instead of legacy "mem" option.  
> 
> Can we keep this patch for the follow up?
memdev for numa was there for along time, just untested.
With this all numa tests switch to it instead of using
legacy option (+ a test for legacy option).
I don't think the patch should delayed along with numa
cleanups.

It of-cause could be posted as standalone patch as well,
I'll leave it upto Paolo whether to merge it or not.
 
> > 
> > Make tests to follow new rules and add an additional test
> > for legacy "mem" option on old machine type, to make sure
> > it won't regress in the future.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Acked-by: Thomas Huth <thuth@redhat.com>
> > ---  
> 

Re: [PATCH v5 11/79] arm/collie: use memdev for RAM

[Igor Mammedov]

On Tue, 18 Feb 2020 18:16:14 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> Hi Igor,
> 
> On 2/17/20 6:33 PM, Igor Mammedov wrote:
> > memory_region_allocate_system_memory() API is going away, so
> > replace it with memdev allocated MemoryRegion. The later is
> > initialized by generic code, so board only needs to opt in
> > to memdev scheme by providing
> >    MachineClass::default_ram_id
> > and using MachineState::ram instead of manually initializing
> > RAM memory region.
> > 
> > PS:
> >   - while at it add check for user supplied RAM size and error
> >     out if it mismatches board expected value.
> >   - introduce RAM_ADDR_UFMT to avoid build errors on 32-bit hosts
> >     when specifying format string for ram_addr_t type  
> 
> Since v3 the 2nd comment is not valid anymore (also in other patches 
> from this series).

I looks like the last remnant of RAM_ADDR_UFMT
I'll remove it in v6

> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Andrew Jones <drjones@redhat.com>
> > ---
> > v2:
> >    * fix format string causing build failure on 32-bit host
> >      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> > v3:
> >    * instead of RAM_ADDR_UFMT adding use size_to_str()
> >       Philippe Mathieu-Daudé <philmd@redhat.com>
> > ---
> >   hw/arm/collie.c | 17 ++++++++++++-----
> >   1 file changed, 12 insertions(+), 5 deletions(-)
> > 
> > diff --git a/hw/arm/collie.c b/hw/arm/collie.c
> > index 970a4405cc..024893fc9e 100644
> > --- a/hw/arm/collie.c
> > +++ b/hw/arm/collie.c
> > @@ -10,6 +10,7 @@
> >    */
> >   #include "qemu/osdep.h"
> >   #include "qemu/units.h"
> > +#include "qemu/cutils.h"
> >   #include "hw/sysbus.h"
> >   #include "hw/boards.h"
> >   #include "strongarm.h"
> > @@ -20,20 +21,24 @@
> >   
> >   static struct arm_boot_info collie_binfo = {
> >       .loader_start = SA_SDCS0,
> > -    .ram_size = 0x20000000,  
> 
> This doesn't seem correct, this field is used do_cpu_reset() -> 
> set_kernel_args() (see hw/arm/boot.c).

Thanks,
fixed in v6.

I'll respin series as already several amended patches accumulated by this time.

> 
> >   };
> >   
> >   static void collie_init(MachineState *machine)
> >   {
> >       StrongARMState *s;
> >       DriveInfo *dinfo;
> > -    MemoryRegion *sdram = g_new(MemoryRegion, 1);
> > +    MachineClass *mc = MACHINE_GET_CLASS(machine);
> > +
> > +    if (machine->ram_size != mc->default_ram_size) {
> > +        char *sz = size_to_str(mc->default_ram_size);
> > +        error_report("Invalid RAM size, should be %s", sz);
> > +        g_free(sz);
> > +        exit(EXIT_FAILURE);
> > +    }
> >   
> >       s = sa1110_init(machine->cpu_type);
> >   
> > -    memory_region_allocate_system_memory(sdram, NULL, "strongarm.sdram",
> > -                                         collie_binfo.ram_size);
> > -    memory_region_add_subregion(get_system_memory(), SA_SDCS0, sdram);
> > +    memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram);
> >   
> >       dinfo = drive_get(IF_PFLASH, 0, 0);
> >       pflash_cfi01_register(SA_CS0, "collie.fl1", 0x02000000,
> > @@ -57,6 +62,8 @@ static void collie_machine_init(MachineClass *mc)
> >       mc->init = collie_init;
> >       mc->ignore_memory_transaction_failures = true;
> >       mc->default_cpu_type = ARM_CPU_TYPE_NAME("sa1110");
> > +    mc->default_ram_size = 0x20000000;
> > +    mc->default_ram_id = "strongarm.sdram";
> >   }
> >   
> >   DEFINE_MACHINE("collie", collie_machine_init)
> >   
> 
> 

Re: [PATCH v5 27/79] arm/palm: use memdev for RAM

[Igor Mammedov]

On Tue, 18 Feb 2020 18:22:06 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/17/20 6:34 PM, Igor Mammedov wrote:
> > memory_region_allocate_system_memory() API is going away, so
> > replace it with memdev allocated MemoryRegion. The later is
> > initialized by generic code, so board only needs to opt in
> > to memdev scheme by providing
> >    MachineClass::default_ram_id
> > and using MachineState::ram instead of manually initializing
> > RAM memory region.
> > 
> > PS:
> >   while at it add check for user supplied RAM size and error
> >   out if it mismatches board expected value.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Andrew Jones <drjones@redhat.com>
> > ---
> > v2:
> >    * fix format string causing build failure on 32-bit host
> >      (Philippe Mathieu-Daudé <philmd@redhat.com>)
> > 
> > CC: balrogg@gmail.com
> > ---
> >   hw/arm/palm.c | 20 ++++++++++++++------
> >   1 file changed, 14 insertions(+), 6 deletions(-)
> > 
> > diff --git a/hw/arm/palm.c b/hw/arm/palm.c
> > index 72eca8cc55..388b2629a5 100644
> > --- a/hw/arm/palm.c
> > +++ b/hw/arm/palm.c
> > @@ -31,6 +31,7 @@
> >   #include "hw/loader.h"
> >   #include "exec/address-spaces.h"
> >   #include "cpu.h"
> > +#include "qemu/cutils.h"
> >   
> >   static uint64_t static_read(void *opaque, hwaddr offset, unsigned size)
> >   {
> > @@ -181,7 +182,6 @@ static void palmte_gpio_setup(struct omap_mpu_state_s *cpu)
> >   
> >   static struct arm_boot_info palmte_binfo = {
> >       .loader_start = OMAP_EMIFF_BASE,
> > -    .ram_size = 0x02000000,  
> 
> Again, this is incorrect. Used by hw/arm/boot::do_cpu_reset().
Thanks,
fixed in v6

> 
> >       .board_id = 0x331,
> >   };
> >   
> > @@ -195,15 +195,21 @@ static void palmte_init(MachineState *machine)
> >       static uint32_t cs2val = 0x0000e1a0;
> >       static uint32_t cs3val = 0xe1a0e1a0;
> >       int rom_size, rom_loaded = 0;
> > -    MemoryRegion *dram = g_new(MemoryRegion, 1);
> > +    MachineClass *mc = MACHINE_GET_CLASS(machine);
> >       MemoryRegion *flash = g_new(MemoryRegion, 1);
> >       MemoryRegion *cs = g_new(MemoryRegion, 4);
> >   
> > -    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
> > -                                         palmte_binfo.ram_size);
> > -    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE, dram);
> > +    if (machine->ram_size != mc->default_ram_size) {
> > +        char *sz = size_to_str(mc->default_ram_size);
> > +        error_report("Invalid RAM size, should be %s", sz);
> > +        g_free(sz);
> > +        exit(EXIT_FAILURE);
> > +    }
> > +
> > +    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE,
> > +                                machine->ram);
> >   
> > -    mpu = omap310_mpu_init(dram, machine->cpu_type);
> > +    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
> >   
> >       /* External Flash (EMIFS) */
> >       memory_region_init_ram(flash, NULL, "palmte.flash", flash_size,
> > @@ -265,6 +271,8 @@ static void palmte_machine_init(MachineClass *mc)
> >       mc->init = palmte_init;
> >       mc->ignore_memory_transaction_failures = true;
> >       mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
> > +    mc->default_ram_size = 0x02000000;
> > +    mc->default_ram_id = "omap1.dram";
> >   }
> >   
> >   DEFINE_MACHINE("cheetah", palmte_machine_init)
> >   
> 

Re: [PATCH v5 34/79] arm/xilinx_zynq: drop RAM size fixup

[Igor Mammedov]

On Tue, 18 Feb 2020 18:23:47 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/17/20 6:34 PM, Igor Mammedov wrote:
> > If user provided non-sense RAM size, board will complain and
> > continue running with max RAM size supported.
> > Also RAM is going to be allocated by generic code, so it won't be
> > possible for board to fix things up for user.
> > 
> > Make it error message and exit to force user fix CLI,
> > instead of accepting non-sense CLI values.
> > 
> > Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> > Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
> > ---
> >   hw/arm/xilinx_zynq.c | 16 ++++++++--------
> >   1 file changed, 8 insertions(+), 8 deletions(-)
> > 
> > diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
> > index 3a0fa5b23f..df950fc400 100644
> > --- a/hw/arm/xilinx_zynq.c
> > +++ b/hw/arm/xilinx_zynq.c
> > @@ -158,7 +158,6 @@ static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
> >   
> >   static void zynq_init(MachineState *machine)
> >   {
> > -    ram_addr_t ram_size = machine->ram_size;
> >       ARMCPU *cpu;
> >       MemoryRegion *address_space_mem = get_system_memory();
> >       MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
> > @@ -168,6 +167,12 @@ static void zynq_init(MachineState *machine)
> >       qemu_irq pic[64];
> >       int n;
> >   
> > +    /* max 2GB ram */
> > +    if (machine->ram_size > 0x80000000) {
> > +        error_report("RAM size more than %d is not supported", 0x80000000);  
> 
> Eh? Maybe:
> 
>         if (machine->ram_size > 2 * GiB) {
>             error_report("RAM size more than 2 GiB is not supported");

amended in v6

> > +        exit(EXIT_FAILURE);
> > +    }
> > +
> >       cpu = ARM_CPU(object_new(machine->cpu_type));
> >   
> >       /* By default A9 CPUs have EL3 enabled.  This board does not
> > @@ -184,14 +189,9 @@ static void zynq_init(MachineState *machine)
> >                               &error_fatal);
> >       object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
> >   
> > -    /* max 2GB ram */
> > -    if (ram_size > 0x80000000) {
> > -        ram_size = 0x80000000;
> > -    }
> > -
> >       /* DDR remapped to address zero.  */
> >       memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
> > -                                         ram_size);
> > +                                         machine->ram_size);
> >       memory_region_add_subregion(address_space_mem, 0, ext_ram);
> >   
> >       /* 256K of on-chip memory */
> > @@ -300,7 +300,7 @@ static void zynq_init(MachineState *machine)
> >       sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
> >       sysbus_mmio_map(busdev, 0, 0xF8007000);
> >   
> > -    zynq_binfo.ram_size = ram_size;
> > +    zynq_binfo.ram_size = machine->ram_size;
> >       zynq_binfo.nb_cpus = 1;
> >       zynq_binfo.board_id = 0xd32;
> >       zynq_binfo.loader_start = 0;
> >   
> 

Re: [PATCH v5 11/79] arm/collie: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/19/20 2:44 PM, Igor Mammedov wrote:
> On Tue, 18 Feb 2020 18:16:14 +0100
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> Hi Igor,
>>
>> On 2/17/20 6:33 PM, Igor Mammedov wrote:
>>> memory_region_allocate_system_memory() API is going away, so
>>> replace it with memdev allocated MemoryRegion. The later is
>>> initialized by generic code, so board only needs to opt in
>>> to memdev scheme by providing
>>>     MachineClass::default_ram_id
>>> and using MachineState::ram instead of manually initializing
>>> RAM memory region.
>>>
>>> PS:
>>>    - while at it add check for user supplied RAM size and error
>>>      out if it mismatches board expected value.
>>>    - introduce RAM_ADDR_UFMT to avoid build errors on 32-bit hosts
>>>      when specifying format string for ram_addr_t type
>>
>> Since v3 the 2nd comment is not valid anymore (also in other patches
>> from this series).
> 
> I looks like the last remnant of RAM_ADDR_UFMT
> I'll remove it in v6

Thanks.

> 
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> Reviewed-by: Andrew Jones <drjones@redhat.com>
>>> ---
>>> v2:
>>>     * fix format string causing build failure on 32-bit host
>>>       (Philippe Mathieu-Daudé <philmd@redhat.com>)
>>> v3:
>>>     * instead of RAM_ADDR_UFMT adding use size_to_str()
>>>        Philippe Mathieu-Daudé <philmd@redhat.com>
>>> ---
>>>    hw/arm/collie.c | 17 ++++++++++++-----
>>>    1 file changed, 12 insertions(+), 5 deletions(-)
>>>
>>> diff --git a/hw/arm/collie.c b/hw/arm/collie.c
>>> index 970a4405cc..024893fc9e 100644
>>> --- a/hw/arm/collie.c
>>> +++ b/hw/arm/collie.c
>>> @@ -10,6 +10,7 @@
>>>     */
>>>    #include "qemu/osdep.h"
>>>    #include "qemu/units.h"
>>> +#include "qemu/cutils.h"
>>>    #include "hw/sysbus.h"
>>>    #include "hw/boards.h"
>>>    #include "strongarm.h"
>>> @@ -20,20 +21,24 @@
>>>    
>>>    static struct arm_boot_info collie_binfo = {
>>>        .loader_start = SA_SDCS0,
>>> -    .ram_size = 0x20000000,
>>
>> This doesn't seem correct, this field is used do_cpu_reset() ->
>> set_kernel_args() (see hw/arm/boot.c).
> 
> Thanks,
> fixed in v6.
> 
> I'll respin series as already several amended patches accumulated by this time.

With the arm_boot_info ram_size unmodified, please add
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> 
>>
>>>    };
>>>    
>>>    static void collie_init(MachineState *machine)
>>>    {
>>>        StrongARMState *s;
>>>        DriveInfo *dinfo;
>>> -    MemoryRegion *sdram = g_new(MemoryRegion, 1);
>>> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>>> +
>>> +    if (machine->ram_size != mc->default_ram_size) {
>>> +        char *sz = size_to_str(mc->default_ram_size);
>>> +        error_report("Invalid RAM size, should be %s", sz);
>>> +        g_free(sz);
>>> +        exit(EXIT_FAILURE);
>>> +    }
>>>    
>>>        s = sa1110_init(machine->cpu_type);
>>>    
>>> -    memory_region_allocate_system_memory(sdram, NULL, "strongarm.sdram",
>>> -                                         collie_binfo.ram_size);
>>> -    memory_region_add_subregion(get_system_memory(), SA_SDCS0, sdram);
>>> +    memory_region_add_subregion(get_system_memory(), SA_SDCS0, machine->ram);
>>>    
>>>        dinfo = drive_get(IF_PFLASH, 0, 0);
>>>        pflash_cfi01_register(SA_CS0, "collie.fl1", 0x02000000,
>>> @@ -57,6 +62,8 @@ static void collie_machine_init(MachineClass *mc)
>>>        mc->init = collie_init;
>>>        mc->ignore_memory_transaction_failures = true;
>>>        mc->default_cpu_type = ARM_CPU_TYPE_NAME("sa1110");
>>> +    mc->default_ram_size = 0x20000000;
>>> +    mc->default_ram_id = "strongarm.sdram";
>>>    }
>>>    
>>>    DEFINE_MACHINE("collie", collie_machine_init)
>>>    
>>
>>
> 

Re: [PATCH v5 27/79] arm/palm: use memdev for RAM

[Philippe Mathieu-Daudé]

On 2/19/20 2:44 PM, Igor Mammedov wrote:
> On Tue, 18 Feb 2020 18:22:06 +0100
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> On 2/17/20 6:34 PM, Igor Mammedov wrote:
>>> memory_region_allocate_system_memory() API is going away, so
>>> replace it with memdev allocated MemoryRegion. The later is
>>> initialized by generic code, so board only needs to opt in
>>> to memdev scheme by providing
>>>     MachineClass::default_ram_id
>>> and using MachineState::ram instead of manually initializing
>>> RAM memory region.
>>>
>>> PS:
>>>    while at it add check for user supplied RAM size and error
>>>    out if it mismatches board expected value.
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> Reviewed-by: Andrew Jones <drjones@redhat.com>
>>> ---
>>> v2:
>>>     * fix format string causing build failure on 32-bit host
>>>       (Philippe Mathieu-Daudé <philmd@redhat.com>)
>>>
>>> CC: balrogg@gmail.com
>>> ---
>>>    hw/arm/palm.c | 20 ++++++++++++++------
>>>    1 file changed, 14 insertions(+), 6 deletions(-)
>>>
>>> diff --git a/hw/arm/palm.c b/hw/arm/palm.c
>>> index 72eca8cc55..388b2629a5 100644
>>> --- a/hw/arm/palm.c
>>> +++ b/hw/arm/palm.c
>>> @@ -31,6 +31,7 @@
>>>    #include "hw/loader.h"
>>>    #include "exec/address-spaces.h"
>>>    #include "cpu.h"
>>> +#include "qemu/cutils.h"
>>>    
>>>    static uint64_t static_read(void *opaque, hwaddr offset, unsigned size)
>>>    {
>>> @@ -181,7 +182,6 @@ static void palmte_gpio_setup(struct omap_mpu_state_s *cpu)
>>>    
>>>    static struct arm_boot_info palmte_binfo = {
>>>        .loader_start = OMAP_EMIFF_BASE,
>>> -    .ram_size = 0x02000000,
>>
>> Again, this is incorrect. Used by hw/arm/boot::do_cpu_reset().
> Thanks,
> fixed in v6

With the arm_boot_info ram_size unmodified, please add
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> 
>>
>>>        .board_id = 0x331,
>>>    };
>>>    
>>> @@ -195,15 +195,21 @@ static void palmte_init(MachineState *machine)
>>>        static uint32_t cs2val = 0x0000e1a0;
>>>        static uint32_t cs3val = 0xe1a0e1a0;
>>>        int rom_size, rom_loaded = 0;
>>> -    MemoryRegion *dram = g_new(MemoryRegion, 1);
>>> +    MachineClass *mc = MACHINE_GET_CLASS(machine);
>>>        MemoryRegion *flash = g_new(MemoryRegion, 1);
>>>        MemoryRegion *cs = g_new(MemoryRegion, 4);
>>>    
>>> -    memory_region_allocate_system_memory(dram, NULL, "omap1.dram",
>>> -                                         palmte_binfo.ram_size);
>>> -    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE, dram);
>>> +    if (machine->ram_size != mc->default_ram_size) {
>>> +        char *sz = size_to_str(mc->default_ram_size);
>>> +        error_report("Invalid RAM size, should be %s", sz);
>>> +        g_free(sz);
>>> +        exit(EXIT_FAILURE);
>>> +    }
>>> +
>>> +    memory_region_add_subregion(address_space_mem, OMAP_EMIFF_BASE,
>>> +                                machine->ram);
>>>    
>>> -    mpu = omap310_mpu_init(dram, machine->cpu_type);
>>> +    mpu = omap310_mpu_init(machine->ram, machine->cpu_type);
>>>    
>>>        /* External Flash (EMIFS) */
>>>        memory_region_init_ram(flash, NULL, "palmte.flash", flash_size,
>>> @@ -265,6 +271,8 @@ static void palmte_machine_init(MachineClass *mc)
>>>        mc->init = palmte_init;
>>>        mc->ignore_memory_transaction_failures = true;
>>>        mc->default_cpu_type = ARM_CPU_TYPE_NAME("ti925t");
>>> +    mc->default_ram_size = 0x02000000;
>>> +    mc->default_ram_id = "omap1.dram";
>>>    }
>>>    
>>>    DEFINE_MACHINE("cheetah", palmte_machine_init)
>>>    
>>
> 

Re: [PATCH v5 79/79] tests:numa-test: use explicit memdev to specify node RAM

[Philippe Mathieu-Daudé]

On 2/19/20 2:00 PM, Igor Mammedov wrote:
> On Tue, 18 Feb 2020 18:51:34 +0100
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> On 2/17/20 6:34 PM, Igor Mammedov wrote:
>>> Follow up patches will remove automatic RAM distribution
>>> between nodes and will make default machine types require
>>> "memdev" option instead of legacy "mem" option.
>>
>> Can we keep this patch for the follow up?
> memdev for numa was there for along time, just untested.
> With this all numa tests switch to it instead of using
> legacy option (+ a test for legacy option).
> I don't think the patch should delayed along with numa
> cleanups.

I guess what confuses me is "Follow up patches *will* remove..."

> 
> It of-cause could be posted as standalone patch as well,
> I'll leave it upto Paolo whether to merge it or not.
>   
>>>
>>> Make tests to follow new rules and add an additional test
>>> for legacy "mem" option on old machine type, to make sure
>>> it won't regress in the future.
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> Acked-by: Thomas Huth <thuth@redhat.com>
>>> ---
>>
> 

Re: [PATCH v5 34/79] arm/xilinx_zynq: drop RAM size fixup

[Philippe Mathieu-Daudé]

On 2/19/20 2:44 PM, Igor Mammedov wrote:
> On Tue, 18 Feb 2020 18:23:47 +0100
> Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> 
>> On 2/17/20 6:34 PM, Igor Mammedov wrote:
>>> If user provided non-sense RAM size, board will complain and
>>> continue running with max RAM size supported.
>>> Also RAM is going to be allocated by generic code, so it won't be
>>> possible for board to fix things up for user.
>>>
>>> Make it error message and exit to force user fix CLI,
>>> instead of accepting non-sense CLI values.
>>>
>>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
>>> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
>>> ---
>>>    hw/arm/xilinx_zynq.c | 16 ++++++++--------
>>>    1 file changed, 8 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/hw/arm/xilinx_zynq.c b/hw/arm/xilinx_zynq.c
>>> index 3a0fa5b23f..df950fc400 100644
>>> --- a/hw/arm/xilinx_zynq.c
>>> +++ b/hw/arm/xilinx_zynq.c
>>> @@ -158,7 +158,6 @@ static inline void zynq_init_spi_flashes(uint32_t base_addr, qemu_irq irq,
>>>    
>>>    static void zynq_init(MachineState *machine)
>>>    {
>>> -    ram_addr_t ram_size = machine->ram_size;
>>>        ARMCPU *cpu;
>>>        MemoryRegion *address_space_mem = get_system_memory();
>>>        MemoryRegion *ext_ram = g_new(MemoryRegion, 1);
>>> @@ -168,6 +167,12 @@ static void zynq_init(MachineState *machine)
>>>        qemu_irq pic[64];
>>>        int n;
>>>    
>>> +    /* max 2GB ram */
>>> +    if (machine->ram_size > 0x80000000) {
>>> +        error_report("RAM size more than %d is not supported", 0x80000000);
>>
>> Eh? Maybe:
>>
>>          if (machine->ram_size > 2 * GiB) {
>>              error_report("RAM size more than 2 GiB is not supported");
> 
> amended in v6

Then please add to v6:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Thanks :)

> 
>>> +        exit(EXIT_FAILURE);
>>> +    }
>>> +
>>>        cpu = ARM_CPU(object_new(machine->cpu_type));
>>>    
>>>        /* By default A9 CPUs have EL3 enabled.  This board does not
>>> @@ -184,14 +189,9 @@ static void zynq_init(MachineState *machine)
>>>                                &error_fatal);
>>>        object_property_set_bool(OBJECT(cpu), true, "realized", &error_fatal);
>>>    
>>> -    /* max 2GB ram */
>>> -    if (ram_size > 0x80000000) {
>>> -        ram_size = 0x80000000;
>>> -    }
>>> -
>>>        /* DDR remapped to address zero.  */
>>>        memory_region_allocate_system_memory(ext_ram, NULL, "zynq.ext_ram",
>>> -                                         ram_size);
>>> +                                         machine->ram_size);
>>>        memory_region_add_subregion(address_space_mem, 0, ext_ram);
>>>    
>>>        /* 256K of on-chip memory */
>>> @@ -300,7 +300,7 @@ static void zynq_init(MachineState *machine)
>>>        sysbus_connect_irq(busdev, 0, pic[40 - IRQ_OFFSET]);
>>>        sysbus_mmio_map(busdev, 0, 0xF8007000);
>>>    
>>> -    zynq_binfo.ram_size = ram_size;
>>> +    zynq_binfo.ram_size = machine->ram_size;
>>>        zynq_binfo.nb_cpus = 1;
>>>        zynq_binfo.board_id = 0xd32;
>>>        zynq_binfo.loader_start = 0;
>>>    
>>
> 

Re: [PATCH v5 79/79] tests:numa-test: use explicit memdev to specify node RAM

[Igor Mammedov]

On Wed, 19 Feb 2020 15:06:24 +0100
Philippe Mathieu-Daudé <philmd@redhat.com> wrote:

> On 2/19/20 2:00 PM, Igor Mammedov wrote:
> > On Tue, 18 Feb 2020 18:51:34 +0100
> > Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> >   
> >> On 2/17/20 6:34 PM, Igor Mammedov wrote:  
> >>> Follow up patches will remove automatic RAM distribution
> >>> between nodes and will make default machine types require
> >>> "memdev" option instead of legacy "mem" option.  
> >>
> >> Can we keep this patch for the follow up?  
> > memdev for numa was there for along time, just untested.
> > With this all numa tests switch to it instead of using
> > legacy option (+ a test for legacy option).
> > I don't think the patch should delayed along with numa
> > cleanups.  
> 
> I guess what confuses me is "Follow up patches *will* remove..."
I'll drop this frase since there aren't immediate "Follow up patches"
to avoid confusion

> > 
> > It of-cause could be posted as standalone patch as well,
> > I'll leave it upto Paolo whether to merge it or not.
> >     
> >>>
> >>> Make tests to follow new rules and add an additional test
> >>> for legacy "mem" option on old machine type, to make sure
> >>> it won't regress in the future.
> >>>
> >>> Signed-off-by: Igor Mammedov <imammedo@redhat.com>
> >>> Acked-by: Thomas Huth <thuth@redhat.com>
> >>> ---  
> >>  
> >   
>