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From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Cc: Igor Mammedov <imammedo@redhat.com>
Subject: [PULL 003/136] machine: alias -mem-path and -mem-prealloc into memory-foo backend
Date: Tue, 25 Feb 2020 12:48:53 +0100
Message-ID: <1582631466-13880-3-git-send-email-pbonzini@redhat.com> (raw)
In-Reply-To: <1582631466-13880-1-git-send-email-pbonzini@redhat.com>

From: Igor Mammedov <imammedo@redhat.com>

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>
Message-Id: <20200219160953.13771-4-imammedo@redhat.com>
---
 backends/hostmem-file.c  |  7 -------
 backends/hostmem-ram.c   |  2 --
 include/hw/boards.h      |  8 ++++++++
 include/sysemu/hostmem.h | 16 ++++++++++++++++
 vl.c                     | 25 +++++++++++++++++++++++++
 5 files changed, 49 insertions(+), 9 deletions(-)

diff --git a/backends/hostmem-file.c b/backends/hostmem-file.c
index be64020..cb319a9 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 6aab8d3..5cc53e7 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/include/hw/boards.h b/include/hw/boards.h
index 7b4b6b7..8e536ca 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 4dbdadd..5db0d66 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/vl.c b/vl.c
index 794f2e5..4dc4803 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();
 
-- 
1.8.3.1




  parent reply index

Thread overview: 149+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-25 11:48 [PULL 000/136] Misc patches for 2020-02-25 (refactoring and Coccinelle edition) Paolo Bonzini
2020-02-25 11:48 ` [PULL 002/136] machine: introduce memory-backend property Paolo Bonzini
2020-02-25 11:48 ` Paolo Bonzini [this message]
2020-02-25 11:48 ` [PULL 004/136] machine: introduce convenience MachineState::ram Paolo Bonzini
2020-02-25 11:48 ` [PULL 005/136] initialize MachineState::ram in NUMA case Paolo Bonzini
2020-02-25 11:48 ` [PULL 006/136] vl.c: move -m parsing after memory backends has been processed Paolo Bonzini
2020-03-26  9:20   ` Auger Eric
2020-03-26 10:43     ` Igor Mammedov
2020-02-25 11:48 ` [PULL 007/136] vl.c: ensure that ram_size matches size of machine.memory-backend Paolo Bonzini
2020-02-25 11:48 ` [PULL 008/136] alpha/dp264: use memdev for RAM Paolo Bonzini
2020-02-25 11:48 ` [PULL 009/136] arm/aspeed: actually check RAM size Paolo Bonzini
2020-02-25 11:49 ` [PULL 010/136] arm/aspeed: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 011/136] arm/collie: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 012/136] arm/cubieboard: " Paolo Bonzini
2020-03-02 15:41   ` Peter Maydell
2020-03-02 16:55     ` Igor Mammedov
2020-03-02 17:11       ` Peter Maydell
2020-02-25 11:49 ` [PULL 013/136] arm/digic_boards: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 014/136] arm/highbank: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 015/136] arm/imx25_pdk: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 016/136] arm/imx25_pdk: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 017/136] arm/integratorcp: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 018/136] arm/kzm: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 019/136] arm/kzm: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 020/136] arm/mcimx6ul-evk: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 021/136] arm/mcimx7d-sabre: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 022/136] arm/mps2-tz: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 023/136] arm/mps2: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 024/136] arm/musicpal: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 025/136] arm/nseries: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 026/136] arm/omap_sx1: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 027/136] arm/palm: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 028/136] arm/sabrelite: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 029/136] arm/raspi: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 030/136] arm/sbsa-ref: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 031/136] arm/versatilepb: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 032/136] arm/vexpress: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 033/136] arm/virt: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 034/136] arm/xilinx_zynq: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 035/136] arm/xilinx_zynq: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 036/136] arm/xlnx-versal-virt: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 037/136] arm/xlnx-zcu102: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 038/136] s390x/s390-virtio-ccw: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 039/136] null-machine: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 040/136] cris/axis_dev88: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 041/136] hppa: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 042/136] x86/microvm: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 043/136] x86/pc: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 044/136] lm32/lm32_boards: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 045/136] lm32/milkymist: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 046/136] m68k/an5206: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 047/136] m68k/q800: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 048/136] m68k/mcf5208: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 049/136] m68k/next-cube: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 050/136] mips/boston: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 051/136] mips/mips_fulong2e: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 052/136] mips/mips_fulong2e: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 053/136] mips/mips_jazz: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 054/136] mips/mips_jazz: add max ram size check Paolo Bonzini
2020-02-25 11:49 ` [PULL 055/136] mips/mips_malta: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 056/136] mips/mips_mipssim: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 057/136] mips/mips_r4k: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 058/136] ppc/e500: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 059/136] ppc/e500: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 060/136] ppc/mac_newworld: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 061/136] ppc/mac_oldworld: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 062/136] ppc/pnv: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 063/136] ppc/ppc405_boards: add RAM size checks Paolo Bonzini
2020-02-25 11:49 ` [PULL 064/136] ppc/ppc405_boards: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 065/136] ppc/{ppc440_bamboo, sam460ex}: drop RAM size fixup Paolo Bonzini
2020-02-25 11:49 ` [PULL 066/136] ppc/{ppc440_bamboo, sam460ex}: use memdev for RAM Paolo Bonzini
2020-02-25 11:49 ` [PULL 067/136] ppc/spapr: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 068/136] ppc/virtex_ml507: " Paolo Bonzini
2020-02-25 11:49 ` [PULL 069/136] sparc/leon3: " Paolo Bonzini
2020-02-25 11:50 ` [PULL 070/136] sparc/sun4m: " Paolo Bonzini
2020-02-25 11:50 ` [PULL 071/136] sparc/niagara: " Paolo Bonzini
2020-02-25 11:50 ` [PULL 072/136] remove no longer used memory_region_allocate_system_memory() Paolo Bonzini
2020-02-25 11:50 ` [PULL 073/136] exec: cleanup qemu_minrampagesize()/qemu_maxrampagesize() Paolo Bonzini
2020-02-25 11:50 ` [PULL 074/136] exec: drop bogus mem_path from qemu_ram_alloc_from_fd() Paolo Bonzini
2020-02-25 11:50 ` [PULL 075/136] make mem_path local variable Paolo Bonzini
2020-02-25 11:50 ` [PULL 076/136] hostmem: introduce "prealloc-threads" property Paolo Bonzini
2020-02-25 11:50 ` [PULL 077/136] hostmem: fix strict bind policy Paolo Bonzini
2020-02-25 11:50 ` [PULL 078/136] tests/numa-test: make top level args dynamic and g_autofree(cli) cleanups Paolo Bonzini
2020-02-25 11:50 ` [PULL 079/136] tests:numa-test: use explicit memdev to specify node RAM Paolo Bonzini
2020-02-25 11:50 ` [PULL 080/136] scripts/git.orderfile: Display Cocci scripts before code modifications Paolo Bonzini
2020-02-25 11:50 ` [PULL 081/136] hw: Remove unnecessary cast when calling dma_memory_read() Paolo Bonzini
2020-02-25 11:50 ` [PULL 082/136] exec: Rename ram_ptr variable Paolo Bonzini
2020-02-25 11:50 ` [PULL 083/136] exec: Let flatview API take void pointer arguments Paolo Bonzini
2020-02-25 11:50 ` [PULL 084/136] exec: Let the address_space API use " Paolo Bonzini
2020-02-25 11:50 ` [PULL 085/136] hw/net: Avoid casting non-const pointer, use address_space_write() Paolo Bonzini
2020-02-25 11:50 ` [PULL 086/136] Remove unnecessary cast when using the address_space API Paolo Bonzini
2020-02-25 11:50 ` [PULL 087/136] exec: Let the cpu_[physical]_memory API use void pointer arguments Paolo Bonzini
2020-02-25 11:50 ` [PULL 088/136] Remove unnecessary cast when using the cpu_[physical]_memory API Paolo Bonzini
2020-02-25 11:50 ` [PULL 089/136] hw/ide/internal: Remove unused DMARestartFunc typedef Paolo Bonzini
2020-02-25 11:50 ` [PULL 090/136] hw/ide: Let the DMAIntFunc prototype use a boolean 'is_write' argument Paolo Bonzini
2020-02-25 11:50 ` [PULL 091/136] hw/virtio: Let virtqueue_map_iovec() " Paolo Bonzini
2020-02-25 11:50 ` [PULL 092/136] hw/virtio: Let vhost_memory_map() " Paolo Bonzini
2020-02-25 11:50 ` [PULL 093/136] exec: Let address_space_unmap() " Paolo Bonzini
2020-02-25 11:50 ` [PULL 094/136] Let address_space_rw() calls pass " Paolo Bonzini
2020-02-25 11:50 ` [PULL 095/136] Avoid address_space_rw() with a constant is_write argument Paolo Bonzini
2020-02-25 11:50 ` [PULL 096/136] exec: Let cpu_[physical]_memory API use a boolean 'is_write' argument Paolo Bonzini
2020-02-25 11:50 ` [PULL 097/136] Let cpu_[physical]_memory() calls pass " Paolo Bonzini
2020-02-25 11:50 ` [PULL 098/136] Avoid cpu_physical_memory_rw() with a constant is_write argument Paolo Bonzini
2020-02-25 11:50 ` [PULL 099/136] memory: Correctly return alias region type Paolo Bonzini
2020-02-25 11:50 ` [PULL 100/136] memory: Simplify memory_region_init_rom_nomigrate() to ease review Paolo Bonzini
2020-02-25 11:50 ` [PULL 101/136] scripts/cocci: Rename memory-region-{init-ram -> housekeeping} Paolo Bonzini
2020-02-25 11:50 ` [PULL 102/136] scripts/cocci: Patch to replace memory_region_init_{ram, readonly -> rom} Paolo Bonzini
2020-02-25 11:50 ` [PULL 103/136] hw/arm: Use memory_region_init_rom() with read-only regions Paolo Bonzini
2020-02-25 12:07 ` Paolo Bonzini
2020-02-25 12:07 ` [PULL 104/136] hw/display: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 105/136] hw/mips: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 106/136] hw/m68k: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 107/136] hw/net: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 108/136] hw/pci-host: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 109/136] hw/ppc: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 110/136] hw/riscv: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 111/136] hw/sh4: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 112/136] hw/sparc: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 113/136] scripts/cocci: Patch to detect potential use of memory_region_init_rom Paolo Bonzini
2020-02-25 12:07 ` [PULL 114/136] hw/arm/stm32: Use memory_region_init_rom() with read-only regions Paolo Bonzini
2020-02-25 12:07 ` [PULL 115/136] hw/ppc/ppc405: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 116/136] hw/i386/pc_sysfw: Simplify using memory_region_init_alias() Paolo Bonzini
2020-02-25 12:07 ` [PULL 117/136] hw/i386/pc_sysfw: Remove unused 'ram_size' argument Paolo Bonzini
2020-02-25 12:07 ` [PULL 118/136] scripts/cocci: Patch to remove unnecessary memory_region_set_readonly() Paolo Bonzini
2020-02-25 12:07 ` [PULL 119/136] hw/arm: Remove unnecessary memory_region_set_readonly() on ROM alias Paolo Bonzini
2020-02-25 12:07 ` [PULL 120/136] scripts/cocci: Patch to let devices own their MemoryRegions Paolo Bonzini
2020-02-25 12:07 ` [PULL 121/136] hw/arm: Let devices own the MemoryRegion they create Paolo Bonzini
2020-02-25 12:07 ` [PULL 122/136] hw/char: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 123/136] hw/core: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 124/136] hw/display: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 125/136] hw/dma: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 126/136] hw/riscv: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 127/136] hw/input/milkymist-softusb: Remove unused 'pmem_ptr' field Paolo Bonzini
2020-02-25 12:07 ` [PULL 128/136] hw/input/milkymist-softusb: Let devices own the MemoryRegion they create Paolo Bonzini
2020-02-25 12:07 ` [PULL 129/136] hw/net/milkymist-minimac2: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 130/136] hw/block/onenand: " Paolo Bonzini
2020-02-25 12:07 ` [PULL 131/136] memory: batch allocate ioeventfds[] in address_space_update_ioeventfds() Paolo Bonzini
2020-02-25 12:07 ` [PULL 132/136] mem-prealloc: optimize large guest startup Paolo Bonzini
2020-03-16  8:42   ` Laurent Vivier
2020-03-16  8:45     ` Paolo Bonzini
2020-02-25 12:07 ` [PULL 133/136] qdev-monitor: Forbid repeated device_del Paolo Bonzini
2020-02-25 12:07 ` [PULL 134/136] target/i386: check for empty register in FXAM Paolo Bonzini
2020-02-25 12:07 ` [PULL 135/136] accel/kvm: Check ioctl(KVM_SET_USER_MEMORY_REGION) return value Paolo Bonzini
2020-02-25 12:07 ` [PULL 136/136] WHPX: Assigning maintainer for Windows Hypervisor Platform Paolo Bonzini
2020-02-26 21:07 ` [PULL 000/136] Misc patches for 2020-02-25 (refactoring and Coccinelle edition) Aleksandar Markovic
2020-02-28 10:40   ` Paolo Bonzini
2020-03-06  8:02 ` Christian Borntraeger
2020-03-06  8:34   ` Christian Borntraeger
2020-03-06  8:42     ` Christian Borntraeger

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