From: David Hildenbrand <david@redhat.com>
To: qemu-devel@nongnu.org
Cc: "Marcel Apfelbaum" <mapfelba@redhat.com>,
"Murilo Opsfelder Araujo" <muriloo@linux.ibm.com>,
"Igor Kotrasinski" <i.kotrasinsk@partner.samsung.com>,
"Eduardo Habkost" <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"David Hildenbrand" <david@redhat.com>,
"Richard Henderson" <richard.henderson@linaro.org>,
"Dr. David Alan Gilbert" <dgilbert@redhat.com>,
"Peter Xu" <peterx@redhat.com>, "Greg Kurz" <groug@kaod.org>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Igor Mammedov" <imammedo@redhat.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Philippe Mathieu-Daudé" <philmd@redhat.com>,
"Markus Armbruster" <armbru@redhat.com>
Subject: [PATCH v4 08/14] softmmu/memory: Pass ram_flags to memory_region_init_ram_shared_nomigrate()
Date: Fri, 19 Mar 2021 11:12:24 +0100 [thread overview]
Message-ID: <20210319101230.21531-9-david@redhat.com> (raw)
In-Reply-To: <20210319101230.21531-1-david@redhat.com>
Let's forward ram_flags instead, renaming
memory_region_init_ram_shared_nomigrate() into
memory_region_init_ram_flags_nomigrate(). Forward flags to
qemu_ram_alloc() and qemu_ram_alloc_internal().
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
backends/hostmem-ram.c | 6 +++--
hw/m68k/next-cube.c | 4 ++--
include/exec/memory.h | 24 +++++++++----------
include/exec/ram_addr.h | 2 +-
.../memory-region-housekeeping.cocci | 8 +++----
softmmu/memory.c | 20 ++++++++--------
softmmu/physmem.c | 24 ++++++++-----------
7 files changed, 43 insertions(+), 45 deletions(-)
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index 5cc53e76c9..741e701062 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -19,6 +19,7 @@
static void
ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
{
+ uint32_t ram_flags;
char *name;
if (!backend->size) {
@@ -27,8 +28,9 @@ ram_backend_memory_alloc(HostMemoryBackend *backend, Error **errp)
}
name = host_memory_backend_get_name(backend);
- memory_region_init_ram_shared_nomigrate(&backend->mr, OBJECT(backend), name,
- backend->size, backend->share, errp);
+ ram_flags = backend->share ? RAM_SHARED : 0;
+ memory_region_init_ram_flags_nomigrate(&backend->mr, OBJECT(backend), name,
+ backend->size, ram_flags, errp);
g_free(name);
}
diff --git a/hw/m68k/next-cube.c b/hw/m68k/next-cube.c
index 92b45d760f..59ccae0d5e 100644
--- a/hw/m68k/next-cube.c
+++ b/hw/m68k/next-cube.c
@@ -986,8 +986,8 @@ static void next_cube_init(MachineState *machine)
sysbus_mmio_map(SYS_BUS_DEVICE(pcdev), 1, 0x02100000);
/* BMAP memory */
- memory_region_init_ram_shared_nomigrate(bmapm1, NULL, "next.bmapmem", 64,
- true, &error_fatal);
+ memory_region_init_ram_flags_nomigrate(bmapm1, NULL, "next.bmapmem", 64,
+ RAM_SHARED, &error_fatal);
memory_region_add_subregion(sysmem, 0x020c0000, bmapm1);
/* The Rev_2.5_v66.bin firmware accesses it at 0x820c0020, too */
memory_region_init_alias(bmapm2, NULL, "next.bmapmem2", bmapm1, 0x0, 64);
diff --git a/include/exec/memory.h b/include/exec/memory.h
index 9ffd8c662c..8879821371 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -904,27 +904,27 @@ void memory_region_init_ram_nomigrate(MemoryRegion *mr,
Error **errp);
/**
- * memory_region_init_ram_shared_nomigrate: Initialize RAM memory region.
- * Accesses into the region will
- * modify memory directly.
+ * memory_region_init_ram_flags_nomigrate: Initialize RAM memory region.
+ * Accesses into the region will
+ * modify memory directly.
*
* @mr: the #MemoryRegion to be initialized.
* @owner: the object that tracks the region's reference count
* @name: Region name, becomes part of RAMBlock name used in migration stream
* must be unique within any device
* @size: size of the region.
- * @share: allow remapping RAM to different addresses
+ * @ram_flags: RamBlock flags. Supported flags: RAM_SHARED.
* @errp: pointer to Error*, to store an error if it happens.
*
- * Note that this function is similar to memory_region_init_ram_nomigrate.
- * The only difference is part of the RAM region can be remapped.
+ * Note that this function does not do anything to cause the data in the
+ * RAM memory region to be migrated; that is the responsibility of the caller.
*/
-void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- bool share,
- Error **errp);
+void memory_region_init_ram_flags_nomigrate(MemoryRegion *mr,
+ Object *owner,
+ const char *name,
+ uint64_t size,
+ uint32_t ram_flags,
+ Error **errp);
/**
* memory_region_init_resizeable_ram: Initialize memory region with resizeable
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index a7e3378340..6d4513f8e2 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -122,7 +122,7 @@ RAMBlock *qemu_ram_alloc_from_fd(ram_addr_t size, MemoryRegion *mr,
RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
MemoryRegion *mr, Error **errp);
-RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share, MemoryRegion *mr,
+RAMBlock *qemu_ram_alloc(ram_addr_t size, uint32_t ram_flags, MemoryRegion *mr,
Error **errp);
RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t max_size,
void (*resized)(const char*,
diff --git a/scripts/coccinelle/memory-region-housekeeping.cocci b/scripts/coccinelle/memory-region-housekeeping.cocci
index c768d8140a..29651ebde9 100644
--- a/scripts/coccinelle/memory-region-housekeeping.cocci
+++ b/scripts/coccinelle/memory-region-housekeeping.cocci
@@ -127,8 +127,8 @@ static void device_fn(DeviceState *dev, ...)
- memory_region_init_rom(E1, NULL, E2, E3, E4);
+ memory_region_init_rom(E1, obj, E2, E3, E4);
|
-- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
-+ memory_region_init_ram_shared_nomigrate(E1, obj, E2, E3, E4, E5);
+- memory_region_init_ram_flags_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_flags_nomigrate(E1, obj, E2, E3, E4, E5);
)
...+>
}
@@ -152,8 +152,8 @@ static void device_fn(DeviceState *dev, ...)
- memory_region_init_rom(E1, NULL, E2, E3, E4);
+ memory_region_init_rom(E1, OBJECT(dev), E2, E3, E4);
|
-- memory_region_init_ram_shared_nomigrate(E1, NULL, E2, E3, E4, E5);
-+ memory_region_init_ram_shared_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
+- memory_region_init_ram_flags_nomigrate(E1, NULL, E2, E3, E4, E5);
++ memory_region_init_ram_flags_nomigrate(E1, OBJECT(dev), E2, E3, E4, E5);
)
...+>
}
diff --git a/softmmu/memory.c b/softmmu/memory.c
index 9af1abd79b..9466401262 100644
--- a/softmmu/memory.c
+++ b/softmmu/memory.c
@@ -1531,22 +1531,22 @@ void memory_region_init_ram_nomigrate(MemoryRegion *mr,
uint64_t size,
Error **errp)
{
- memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
+ memory_region_init_ram_flags_nomigrate(mr, owner, name, size, 0, errp);
}
-void memory_region_init_ram_shared_nomigrate(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size,
- bool share,
- Error **errp)
+void memory_region_init_ram_flags_nomigrate(MemoryRegion *mr,
+ Object *owner,
+ const char *name,
+ uint64_t size,
+ uint32_t ram_flags,
+ Error **errp)
{
Error *err = NULL;
memory_region_init(mr, owner, name, size);
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc(size, share, mr, &err);
+ mr->ram_block = qemu_ram_alloc(size, ram_flags, mr, &err);
if (err) {
mr->size = int128_zero();
object_unparent(OBJECT(mr));
@@ -1682,7 +1682,7 @@ void memory_region_init_rom_nomigrate(MemoryRegion *mr,
uint64_t size,
Error **errp)
{
- memory_region_init_ram_shared_nomigrate(mr, owner, name, size, false, errp);
+ memory_region_init_ram_flags_nomigrate(mr, owner, name, size, 0, errp);
mr->readonly = true;
}
@@ -1702,7 +1702,7 @@ void memory_region_init_rom_device_nomigrate(MemoryRegion *mr,
mr->terminates = true;
mr->rom_device = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_block = qemu_ram_alloc(size, false, mr, &err);
+ mr->ram_block = qemu_ram_alloc(size, 0, mr, &err);
if (err) {
mr->size = int128_zero();
object_unparent(OBJECT(mr));
diff --git a/softmmu/physmem.c b/softmmu/physmem.c
index cc59f05593..fdcd38ba61 100644
--- a/softmmu/physmem.c
+++ b/softmmu/physmem.c
@@ -2108,12 +2108,14 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
void (*resized)(const char*,
uint64_t length,
void *host),
- void *host, bool resizeable, bool share,
+ void *host, uint32_t ram_flags,
MemoryRegion *mr, Error **errp)
{
RAMBlock *new_block;
Error *local_err = NULL;
+ assert((ram_flags & ~(RAM_SHARED | RAM_RESIZEABLE)) == 0);
+
size = HOST_PAGE_ALIGN(size);
max_size = HOST_PAGE_ALIGN(max_size);
new_block = g_malloc0(sizeof(*new_block));
@@ -2125,15 +2127,10 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
new_block->fd = -1;
new_block->page_size = qemu_real_host_page_size;
new_block->host = host;
+ new_block->flags = ram_flags;
if (host) {
new_block->flags |= RAM_PREALLOC;
}
- if (share) {
- new_block->flags |= RAM_SHARED;
- }
- if (resizeable) {
- new_block->flags |= RAM_RESIZEABLE;
- }
ram_block_add(new_block, &local_err);
if (local_err) {
g_free(new_block);
@@ -2146,15 +2143,14 @@ RAMBlock *qemu_ram_alloc_internal(ram_addr_t size, ram_addr_t max_size,
RAMBlock *qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
MemoryRegion *mr, Error **errp)
{
- return qemu_ram_alloc_internal(size, size, NULL, host, false,
- false, mr, errp);
+ return qemu_ram_alloc_internal(size, size, NULL, host, 0, mr, errp);
}
-RAMBlock *qemu_ram_alloc(ram_addr_t size, bool share,
+RAMBlock *qemu_ram_alloc(ram_addr_t size, uint32_t ram_flags,
MemoryRegion *mr, Error **errp)
{
- return qemu_ram_alloc_internal(size, size, NULL, NULL, false,
- share, mr, errp);
+ assert((ram_flags & ~RAM_SHARED) == 0);
+ return qemu_ram_alloc_internal(size, size, NULL, NULL, ram_flags, mr, errp);
}
RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t maxsz,
@@ -2163,8 +2159,8 @@ RAMBlock *qemu_ram_alloc_resizeable(ram_addr_t size, ram_addr_t maxsz,
void *host),
MemoryRegion *mr, Error **errp)
{
- return qemu_ram_alloc_internal(size, maxsz, resized, NULL, true,
- false, mr, errp);
+ return qemu_ram_alloc_internal(size, maxsz, resized, NULL,
+ RAM_RESIZEABLE, mr, errp);
}
static void reclaim_ramblock(RAMBlock *block)
--
2.29.2
next prev parent reply other threads:[~2021-03-19 10:23 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-19 10:12 [PATCH v4 00/14] RAM_NORESERVE, MAP_NORESERVE and hostmem "reserve" property David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 01/14] softmmu/physmem: Mark shared anonymous memory RAM_SHARED David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 02/14] softmmu/physmem: Fix ram_block_discard_range() to handle shared anonymous memory David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 03/14] softmmu/physmem: Fix qemu_ram_remap() " David Hildenbrand
2021-03-23 20:40 ` Peter Xu
2021-03-19 10:12 ` [PATCH v4 04/14] util/mmap-alloc: Factor out calculation of the pagesize for the guard page David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 05/14] util/mmap-alloc: Factor out reserving of a memory region to mmap_reserve() David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 06/14] util/mmap-alloc: Factor out activating of memory to mmap_activate() David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 07/14] softmmu/memory: Pass ram_flags to qemu_ram_alloc_from_fd() David Hildenbrand
2021-03-19 10:12 ` David Hildenbrand [this message]
2021-03-19 10:12 ` [PATCH v4 09/14] util/mmap-alloc: Pass flags instead of separate bools to qemu_ram_mmap() David Hildenbrand
2021-03-23 20:49 ` Peter Xu
2021-03-25 9:40 ` David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 10/14] memory: Introduce RAM_NORESERVE and wire it up in qemu_ram_mmap() David Hildenbrand
2021-03-23 20:51 ` Peter Xu
2021-03-19 10:12 ` [PATCH v4 11/14] util/mmap-alloc: Support RAM_NORESERVE via MAP_NORESERVE under Linux David Hildenbrand
2021-03-23 20:56 ` Peter Xu
2021-03-19 10:12 ` [PATCH v4 12/14] hostmem: Wire up RAM_NORESERVE via "reserve" property David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 13/14] qmp: Include "reserve" property of memory backends David Hildenbrand
2021-03-19 15:40 ` Markus Armbruster
2021-03-19 15:49 ` David Hildenbrand
2021-03-19 16:32 ` Markus Armbruster
2021-03-19 16:40 ` David Hildenbrand
2021-03-19 10:12 ` [PATCH v4 14/14] hmp: Print "reserve" property of memory backends with "info memdev" David Hildenbrand
2021-03-25 19:00 ` Dr. David Alan Gilbert
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