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[Qemu-devel] [PATCH for 2.1 1/2] memory: introduce memory_region_init_ra
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From: |
Hu Tao |
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Subject: |
[Qemu-devel] [PATCH for 2.1 1/2] memory: introduce memory_region_init_ram_nofail() and memory_region_init_ram_ptr_nofail() |
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Date: |
Thu, 3 Jul 2014 14:10:55 +0800 |
Introduce memory_region_init_ram_nofail() and
memory_region_init_ram_ptr_nofail(), which are the same as
memory_region_init_ram() and memory_region_init_ram_ptr()
respectively. They will exit qemu if there is an error, this is the
behaviour of old memory_region_init_ram() and
memory_region_init_ram_ptr().
All existing calls to memory_region_init_ram() and
memory_region_init_ram_ptr() are replaced with
memory_region_init_ram_nofail() and memory_region_init_ram_ptr_nofail().
memory_region_init_ram() and memory_region_init_ram_ptr() are added an
extra parameter errp to let callers handle the error.
This patch solves a problem that qemu just exits when using monitor
command object_add to add a memory backend whose size is way too large.
In the case we'd better give an error message and keep guest running.
How to reproduce:
1. run qemu
2. (monitor)object_add memory-backend-ram,size=100000G,id=ram0
Signed-off-by: Hu Tao <address@hidden>
---
backends/hostmem-ram.c | 2 +-
exec.c | 30 +++++++++++++++++--------
hw/block/pflash_cfi01.c | 5 ++++-
hw/block/pflash_cfi02.c | 5 ++++-
hw/core/loader.c | 2 +-
hw/display/vga.c | 2 +-
hw/display/vmware_vga.c | 3 ++-
hw/i386/kvm/pci-assign.c | 9 ++++----
hw/i386/pc.c | 2 +-
hw/i386/pc_sysfw.c | 4 ++--
hw/misc/ivshmem.c | 9 ++++----
hw/misc/vfio.c | 3 ++-
hw/pci/pci.c | 2 +-
include/exec/memory.h | 32 ++++++++++++++++++++++++---
include/exec/ram_addr.h | 4 ++--
memory.c | 57 +++++++++++++++++++++++++++++++++++++++++++-----
numa.c | 4 ++--
17 files changed, 134 insertions(+), 41 deletions(-)
diff --git a/backends/hostmem-ram.c b/backends/hostmem-ram.c
index d9a8290..a67a134 100644
--- a/backends/hostmem-ram.c
+++ b/backends/hostmem-ram.c
@@ -27,7 +27,7 @@ ram_backend_memory_alloc(HostMemoryBackend *backend, Error
**errp)
path = object_get_canonical_path_component(OBJECT(backend));
memory_region_init_ram(&backend->mr, OBJECT(backend), path,
- backend->size);
+ backend->size, errp);
g_free(path);
}
diff --git a/exec.c b/exec.c
index 5a2a25e..8c2a91d 100644
--- a/exec.c
+++ b/exec.c
@@ -1224,7 +1224,7 @@ static int memory_try_enable_merging(void *addr, size_t
len)
return qemu_madvise(addr, len, QEMU_MADV_MERGEABLE);
}
-static ram_addr_t ram_block_add(RAMBlock *new_block)
+static ram_addr_t ram_block_add(RAMBlock *new_block, Error **errp)
{
RAMBlock *block;
ram_addr_t old_ram_size, new_ram_size;
@@ -1241,9 +1241,11 @@ static ram_addr_t ram_block_add(RAMBlock *new_block)
} else {
new_block->host = phys_mem_alloc(new_block->length);
if (!new_block->host) {
- fprintf(stderr, "Cannot set up guest memory '%s': %s\n",
- new_block->mr->name, strerror(errno));
- exit(1);
+ error_setg_errno(errp, errno,
+ "cannot set up guest memory '%s'",
+ new_block->mr->name);
+ qemu_mutex_unlock_ramlist();
+ return -1;
}
memory_try_enable_merging(new_block->host, new_block->length);
}
@@ -1294,6 +1296,7 @@ ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size,
MemoryRegion *mr,
Error **errp)
{
RAMBlock *new_block;
+ ram_addr_t addr;
if (xen_enabled()) {
error_setg(errp, "-mem-path not supported with Xen");
@@ -1323,14 +1326,19 @@ ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size,
MemoryRegion *mr,
return -1;
}
- return ram_block_add(new_block);
+ addr = ram_block_add(new_block, errp);
+ if (errp && *errp) {
+ g_free(new_block);
+ }
+ return addr;
}
#endif
ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
- MemoryRegion *mr)
+ MemoryRegion *mr, Error **errp)
{
RAMBlock *new_block;
+ ram_addr_t addr;
size = TARGET_PAGE_ALIGN(size);
new_block = g_malloc0(sizeof(*new_block));
@@ -1341,12 +1349,16 @@ ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size,
void *host,
if (host) {
new_block->flags |= RAM_PREALLOC;
}
- return ram_block_add(new_block);
+ addr = ram_block_add(new_block, errp);
+ if (errp && *errp) {
+ g_free(new_block);
+ }
+ return addr;
}
-ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr)
+ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr, Error **errp)
{
- return qemu_ram_alloc_from_ptr(size, NULL, mr);
+ return qemu_ram_alloc_from_ptr(size, NULL, mr, errp);
}
void qemu_ram_free_from_ptr(ram_addr_t addr)
diff --git a/hw/block/pflash_cfi01.c b/hw/block/pflash_cfi01.c
index f9507b4..92b8b87 100644
--- a/hw/block/pflash_cfi01.c
+++ b/hw/block/pflash_cfi01.c
@@ -770,7 +770,10 @@ static void pflash_cfi01_realize(DeviceState *dev, Error
**errp)
memory_region_init_rom_device(
&pfl->mem, OBJECT(dev),
pfl->be ? &pflash_cfi01_ops_be : &pflash_cfi01_ops_le, pfl,
- pfl->name, total_len);
+ pfl->name, total_len, errp);
+ if (errp && *errp) {
+ return;
+ }
vmstate_register_ram(&pfl->mem, DEVICE(pfl));
pfl->storage = memory_region_get_ram_ptr(&pfl->mem);
sysbus_init_mmio(SYS_BUS_DEVICE(dev), &pfl->mem);
diff --git a/hw/block/pflash_cfi02.c b/hw/block/pflash_cfi02.c
index 8d4b828..b773f19 100644
--- a/hw/block/pflash_cfi02.c
+++ b/hw/block/pflash_cfi02.c
@@ -608,7 +608,10 @@ static void pflash_cfi02_realize(DeviceState *dev, Error
**errp)
memory_region_init_rom_device(&pfl->orig_mem, OBJECT(pfl), pfl->be ?
&pflash_cfi02_ops_be : &pflash_cfi02_ops_le,
- pfl, pfl->name, chip_len);
+ pfl, pfl->name, chip_len, errp);
+ if (errp && *errp) {
+ return;
+ }
vmstate_register_ram(&pfl->orig_mem, DEVICE(pfl));
pfl->storage = memory_region_get_ram_ptr(&pfl->orig_mem);
pfl->chip_len = chip_len;
diff --git a/hw/core/loader.c b/hw/core/loader.c
index 2bf6b8f..fdebf86 100644
--- a/hw/core/loader.c
+++ b/hw/core/loader.c
@@ -632,7 +632,7 @@ static void *rom_set_mr(Rom *rom, Object *owner, const char
*name)
void *data;
rom->mr = g_malloc(sizeof(*rom->mr));
- memory_region_init_ram(rom->mr, owner, name, rom->datasize);
+ memory_region_init_ram_nofail(rom->mr, owner, name, rom->datasize);
memory_region_set_readonly(rom->mr, true);
vmstate_register_ram_global(rom->mr);
diff --git a/hw/display/vga.c b/hw/display/vga.c
index 4b089a3..f17a4b4 100644
--- a/hw/display/vga.c
+++ b/hw/display/vga.c
@@ -2291,7 +2291,7 @@ void vga_common_init(VGACommonState *s, Object *obj, bool
global_vmstate)
s->vram_size_mb = s->vram_size >> 20;
s->is_vbe_vmstate = 1;
- memory_region_init_ram(&s->vram, obj, "vga.vram", s->vram_size);
+ memory_region_init_ram_nofail(&s->vram, obj, "vga.vram", s->vram_size);
vmstate_register_ram(&s->vram, global_vmstate ? NULL : DEVICE(obj));
xen_register_framebuffer(&s->vram);
s->vram_ptr = memory_region_get_ram_ptr(&s->vram);
diff --git a/hw/display/vmware_vga.c b/hw/display/vmware_vga.c
index 591b645..a3738be 100644
--- a/hw/display/vmware_vga.c
+++ b/hw/display/vmware_vga.c
@@ -1201,7 +1201,8 @@ static void vmsvga_init(DeviceState *dev, struct
vmsvga_state_s *s,
s->vga.con = graphic_console_init(dev, 0, &vmsvga_ops, s);
s->fifo_size = SVGA_FIFO_SIZE;
- memory_region_init_ram(&s->fifo_ram, NULL, "vmsvga.fifo", s->fifo_size);
+ memory_region_init_ram_nofail(&s->fifo_ram, NULL, "vmsvga.fifo",
+ s->fifo_size);
vmstate_register_ram_global(&s->fifo_ram);
s->fifo_ptr = memory_region_get_ram_ptr(&s->fifo_ram);
diff --git a/hw/i386/kvm/pci-assign.c b/hw/i386/kvm/pci-assign.c
index de33657..52d0db0 100644
--- a/hw/i386/kvm/pci-assign.c
+++ b/hw/i386/kvm/pci-assign.c
@@ -454,9 +454,10 @@ static void assigned_dev_register_regions(PCIRegion
*io_regions,
char name[32];
snprintf(name, sizeof(name), "%s.bar%d",
object_get_typename(OBJECT(pci_dev)), i);
- memory_region_init_ram_ptr(&pci_dev->v_addrs[i].real_iomem,
- OBJECT(pci_dev), name,
- cur_region->size, virtbase);
+ memory_region_init_ram_ptr_nofail(
+ &pci_dev->v_addrs[i].real_iomem,
+ OBJECT(pci_dev), name,
+ cur_region->size, virtbase);
vmstate_register_ram(&pci_dev->v_addrs[i].real_iomem,
&pci_dev->dev.qdev);
}
@@ -1943,7 +1944,7 @@ static void assigned_dev_load_option_rom(AssignedDevice
*dev)
snprintf(name, sizeof(name), "%s.rom",
object_get_typename(OBJECT(dev)));
- memory_region_init_ram(&dev->dev.rom, OBJECT(dev), name, st.st_size);
+ memory_region_init_ram_nofail(&dev->dev.rom, OBJECT(dev), name,
st.st_size);
vmstate_register_ram(&dev->dev.rom, &dev->dev.qdev);
ptr = memory_region_get_ram_ptr(&dev->dev.rom);
memset(ptr, 0xff, st.st_size);
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 2cf22b1..f503b0e 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1272,7 +1272,7 @@ FWCfgState *pc_memory_init(MachineState *machine,
pc_system_firmware_init(rom_memory, guest_info->isapc_ram_fw);
option_rom_mr = g_malloc(sizeof(*option_rom_mr));
- memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE);
+ memory_region_init_ram_nofail(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE);
vmstate_register_ram_global(option_rom_mr);
memory_region_add_subregion_overlap(rom_memory,
PC_ROM_MIN_VGA,
diff --git a/hw/i386/pc_sysfw.c b/hw/i386/pc_sysfw.c
index 75a7ebb..a15963b 100644
--- a/hw/i386/pc_sysfw.c
+++ b/hw/i386/pc_sysfw.c
@@ -55,7 +55,7 @@ static void pc_isa_bios_init(MemoryRegion *rom_memory,
/* map the last 128KB of the BIOS in ISA space */
isa_bios_size = MIN(flash_size, 128 * 1024);
isa_bios = g_malloc(sizeof(*isa_bios));
- memory_region_init_ram(isa_bios, NULL, "isa-bios", isa_bios_size);
+ memory_region_init_ram_nofail(isa_bios, NULL, "isa-bios", isa_bios_size);
vmstate_register_ram_global(isa_bios);
memory_region_add_subregion_overlap(rom_memory,
0x100000 - isa_bios_size,
@@ -192,7 +192,7 @@ static void old_pc_system_rom_init(MemoryRegion
*rom_memory, bool isapc_ram_fw)
goto bios_error;
}
bios = g_malloc(sizeof(*bios));
- memory_region_init_ram(bios, NULL, "pc.bios", bios_size);
+ memory_region_init_ram_nofail(bios, NULL, "pc.bios", bios_size);
vmstate_register_ram_global(bios);
if (!isapc_ram_fw) {
memory_region_set_readonly(bios, true);
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 768e528..e3b6e06 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -347,8 +347,8 @@ static void create_shared_memory_BAR(IVShmemState *s, int
fd) {
ptr = mmap(0, s->ivshmem_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
- memory_region_init_ram_ptr(&s->ivshmem, OBJECT(s), "ivshmem.bar2",
- s->ivshmem_size, ptr);
+ memory_region_init_ram_ptr_nofail(&s->ivshmem, OBJECT(s), "ivshmem.bar2",
+ s->ivshmem_size, ptr);
vmstate_register_ram(&s->ivshmem, DEVICE(s));
memory_region_add_subregion(&s->bar, 0, &s->ivshmem);
@@ -475,8 +475,9 @@ static void ivshmem_read(void *opaque, const uint8_t * buf,
int flags)
/* mmap the region and map into the BAR2 */
map_ptr = mmap(0, s->ivshmem_size, PROT_READ|PROT_WRITE, MAP_SHARED,
incoming_fd, 0);
- memory_region_init_ram_ptr(&s->ivshmem, OBJECT(s),
- "ivshmem.bar2", s->ivshmem_size, map_ptr);
+ memory_region_init_ram_ptr_nofail(&s->ivshmem, OBJECT(s),
+ "ivshmem.bar2", s->ivshmem_size,
+ map_ptr);
vmstate_register_ram(&s->ivshmem, DEVICE(s));
IVSHMEM_DPRINTF("guest h/w addr = %" PRIu64 ", size = %" PRIu64 "\n",
diff --git a/hw/misc/vfio.c b/hw/misc/vfio.c
index aef4c9c..5bdee3e 100644
--- a/hw/misc/vfio.c
+++ b/hw/misc/vfio.c
@@ -2894,7 +2894,8 @@ static int vfio_mmap_bar(VFIODevice *vdev, VFIOBAR *bar,
goto empty_region;
}
- memory_region_init_ram_ptr(submem, OBJECT(vdev), name, size, *map);
+ memory_region_init_ram_ptr_nofail(submem, OBJECT(vdev), name, size,
+ *map);
} else {
empty_region:
/* Create a zero sized sub-region to make cleanup easy. */
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 17ed510..ba39f08 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1974,7 +1974,7 @@ static int pci_add_option_rom(PCIDevice *pdev, bool
is_default_rom)
snprintf(name, sizeof(name), "%s.rom",
object_get_typename(OBJECT(pdev)));
}
pdev->has_rom = true;
- memory_region_init_ram(&pdev->rom, OBJECT(pdev), name, size);
+ memory_region_init_ram_nofail(&pdev->rom, OBJECT(pdev), name, size);
vmstate_register_ram(&pdev->rom, &pdev->qdev);
ptr = memory_region_get_ram_ptr(&pdev->rom);
load_image(path, ptr);
diff --git a/include/exec/memory.h b/include/exec/memory.h
index e2c8e3e..2e74518 100644
--- a/include/exec/memory.h
+++ b/include/exec/memory.h
@@ -311,11 +311,27 @@ void memory_region_init_io(MemoryRegion *mr,
* @owner: the object that tracks the region's reference count
* @name: the name of the region.
* @size: size of the region.
+ * @errp: pointer to Error*, to store an error if it happens.
*/
void memory_region_init_ram(MemoryRegion *mr,
struct Object *owner,
const char *name,
- uint64_t size);
+ uint64_t size,
+ Error **errp);
+
+/**
+ * memory_region_init_ram_nofail: like memory_region_init_ram but won't
+ * fail
+ *
+ * @mr: the #MemoryRegion to be initialized.
+ * @owner: the object that tracks the region's reference count
+ * @name: the name of the region.
+ * @size: size of the region.
+ */
+void memory_region_init_ram_nofail(MemoryRegion *mr,
+ struct Object *owner,
+ const char *name,
+ uint64_t size);
#ifdef __linux__
/**
@@ -349,12 +365,20 @@ void memory_region_init_ram_from_file(MemoryRegion *mr,
* @name: the name of the region.
* @size: size of the region.
* @ptr: memory to be mapped; must contain at least @size bytes.
+ * @errp: pointer to Error*, to store an error if it happens.
*/
void memory_region_init_ram_ptr(MemoryRegion *mr,
struct Object *owner,
const char *name,
uint64_t size,
- void *ptr);
+ void *ptr,
+ Error **errp);
+
+void memory_region_init_ram_ptr_nofail(MemoryRegion *mr,
+ struct Object *owner,
+ const char *name,
+ uint64_t size,
+ void *ptr);
/**
* memory_region_init_alias: Initialize a memory region that aliases all or a
@@ -384,13 +408,15 @@ void memory_region_init_alias(MemoryRegion *mr,
* @ops: callbacks for write access handling.
* @name: the name of the region.
* @size: size of the region.
+ * @errp: pointer to Error*, to store an error if it happens.
*/
void memory_region_init_rom_device(MemoryRegion *mr,
struct Object *owner,
const MemoryRegionOps *ops,
void *opaque,
const char *name,
- uint64_t size);
+ uint64_t size,
+ Error **errp);
/**
* memory_region_init_reservation: Initialize a memory region that reserves
diff --git a/include/exec/ram_addr.h b/include/exec/ram_addr.h
index e9eb831..998ac4f 100644
--- a/include/exec/ram_addr.h
+++ b/include/exec/ram_addr.h
@@ -26,8 +26,8 @@ ram_addr_t qemu_ram_alloc_from_file(ram_addr_t size,
MemoryRegion *mr,
bool share, const char *mem_path,
Error **errp);
ram_addr_t qemu_ram_alloc_from_ptr(ram_addr_t size, void *host,
- MemoryRegion *mr);
-ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr);
+ MemoryRegion *mr, Error **errp);
+ram_addr_t qemu_ram_alloc(ram_addr_t size, MemoryRegion *mr, Error **errp);
int qemu_get_ram_fd(ram_addr_t addr);
void *qemu_get_ram_block_host_ptr(ram_addr_t addr);
void *qemu_get_ram_ptr(ram_addr_t addr);
diff --git a/memory.c b/memory.c
index 64d7176..dc24c53 100644
--- a/memory.c
+++ b/memory.c
@@ -25,6 +25,7 @@
#include "exec/memory-internal.h"
#include "exec/ram_addr.h"
#include "sysemu/sysemu.h"
+#include "qemu/error-report.h"
//#define DEBUG_UNASSIGNED
@@ -1163,13 +1164,34 @@ void memory_region_init_io(MemoryRegion *mr,
void memory_region_init_ram(MemoryRegion *mr,
Object *owner,
const char *name,
- uint64_t size)
+ uint64_t size,
+ Error **errp)
{
memory_region_init(mr, owner, name, size);
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
- mr->ram_addr = qemu_ram_alloc(size, mr);
+ mr->ram_addr = qemu_ram_alloc(size, mr, errp);
+}
+
+void memory_region_init_ram_nofail(MemoryRegion *mr,
+ Object *owner,
+ const char *name,
+ uint64_t size)
+{
+ Error *local_err = NULL;
+
+ memory_region_init(mr, owner, name, size);
+ mr->ram = true;
+ mr->terminates = true;
+ mr->destructor = memory_region_destructor_ram;
+ mr->ram_addr = qemu_ram_alloc(size, mr, &local_err);
+
+ if (local_err) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
+ exit(EXIT_FAILURE);
+ }
}
#ifdef __linux__
@@ -1193,13 +1215,35 @@ void memory_region_init_ram_ptr(MemoryRegion *mr,
Object *owner,
const char *name,
uint64_t size,
- void *ptr)
+ void *ptr,
+ Error **errp)
{
memory_region_init(mr, owner, name, size);
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram_from_ptr;
- mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr);
+ mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, errp);
+}
+
+void memory_region_init_ram_ptr_nofail(MemoryRegion *mr,
+ Object *owner,
+ const char *name,
+ uint64_t size,
+ void *ptr)
+{
+ Error *local_err = NULL;
+
+ memory_region_init(mr, owner, name, size);
+ mr->ram = true;
+ mr->terminates = true;
+ mr->destructor = memory_region_destructor_ram_from_ptr;
+ mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, &local_err);
+
+ if (local_err) {
+ error_report("%s", error_get_pretty(local_err));
+ error_free(local_err);
+ exit(EXIT_FAILURE);
+ }
}
void memory_region_init_alias(MemoryRegion *mr,
@@ -1221,7 +1265,8 @@ void memory_region_init_rom_device(MemoryRegion *mr,
const MemoryRegionOps *ops,
void *opaque,
const char *name,
- uint64_t size)
+ uint64_t size,
+ Error **errp)
{
memory_region_init(mr, owner, name, size);
mr->ops = ops;
@@ -1229,7 +1274,7 @@ void memory_region_init_rom_device(MemoryRegion *mr,
mr->terminates = true;
mr->rom_device = true;
mr->destructor = memory_region_destructor_rom_device;
- mr->ram_addr = qemu_ram_alloc(size, mr);
+ mr->ram_addr = qemu_ram_alloc(size, mr, errp);
}
void memory_region_init_iommu(MemoryRegion *mr,
diff --git a/numa.c b/numa.c
index 2fde740..dabba4f 100644
--- a/numa.c
+++ b/numa.c
@@ -263,14 +263,14 @@ static void allocate_system_memory_nonnuma(MemoryRegion
*mr, Object *owner,
if (err) {
qerror_report_err(err);
error_free(err);
- memory_region_init_ram(mr, owner, name, ram_size);
+ memory_region_init_ram_nofail(mr, owner, name, ram_size);
}
#else
fprintf(stderr, "-mem-path not supported on this host\n");
exit(1);
#endif
} else {
- memory_region_init_ram(mr, owner, name, ram_size);
+ memory_region_init_ram_nofail(mr, owner, name, ram_size);
}
vmstate_register_ram_global(mr);
}
--
1.9.3
- [Qemu-devel] [PATCH for 2.1 0/2] bug fixs for memory backend, Hu Tao, 2014/07/03
- [Qemu-devel] [PATCH for 2.1 1/2] memory: introduce memory_region_init_ram_nofail() and memory_region_init_ram_ptr_nofail(),
Hu Tao <=
- [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Hu Tao, 2014/07/03
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Eric Blake, 2014/07/03
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Hu Tao, 2014/07/03
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Eric Blake, 2014/07/04
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Hu Tao, 2014/07/04
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Paolo Bonzini, 2014/07/04
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Michael S. Tsirkin, 2014/07/06
- Re: [Qemu-devel] [PATCH for 2.1 2/2] memory-backend-file: improve error handling, Hu Tao, 2014/07/06