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[PATCH v2 11/16] hostmem: Factor out common checks into host_memory_back
From: |
David Hildenbrand |
Subject: |
[PATCH v2 11/16] hostmem: Factor out common checks into host_memory_backend_validate() |
Date: |
Wed, 12 Feb 2020 14:35:56 +0100 |
All users want to perform similar checks. Lat's factor it out to prepare
for more checks.
Signed-off-by: David Hildenbrand <address@hidden>
---
backends/hostmem.c | 14 ++++++++++++++
hw/mem/pc-dimm.c | 12 +++++-------
hw/misc/ivshmem.c | 11 ++++-------
hw/virtio/virtio-mem.c | 15 +++++----------
hw/virtio/virtio-pmem.c | 13 ++++---------
include/sysemu/hostmem.h | 2 ++
6 files changed, 34 insertions(+), 33 deletions(-)
diff --git a/backends/hostmem.c b/backends/hostmem.c
index 2c8e4567e1..de37f1bf5d 100644
--- a/backends/hostmem.c
+++ b/backends/hostmem.c
@@ -291,6 +291,20 @@ bool host_memory_backend_is_mapped(HostMemoryBackend
*backend)
return backend->is_mapped;
}
+void host_memory_backend_validate(HostMemoryBackend *backend,
+ const char *property, Error **errp)
+{
+ char *path = object_get_canonical_path_component(OBJECT(backend));
+
+ if (!backend) {
+ error_setg(errp, "'%s' property is not set", property);
+ } else if (host_memory_backend_is_mapped(backend)) {
+ error_setg(errp, "'%s' property specifies a busy memdev: %s",
+ property, path);
+ }
+ g_free(path);
+}
+
#ifdef __linux__
size_t host_memory_backend_pagesize(HostMemoryBackend *memdev)
{
diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c
index 8f50b8afea..9ee634ee89 100644
--- a/hw/mem/pc-dimm.c
+++ b/hw/mem/pc-dimm.c
@@ -174,16 +174,14 @@ static void pc_dimm_realize(DeviceState *dev, Error
**errp)
PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
MachineState *ms = MACHINE(qdev_get_machine());
int nb_numa_nodes = ms->numa_state->num_nodes;
+ Error *err = NULL;
- if (!dimm->hostmem) {
- error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set");
- return;
- } else if (host_memory_backend_is_mapped(dimm->hostmem)) {
- char *path =
object_get_canonical_path_component(OBJECT(dimm->hostmem));
- error_setg(errp, "can't use already busy memdev: %s", path);
- g_free(path);
+ host_memory_backend_validate(dimm->hostmem, PC_DIMM_MEMDEV_PROP, &err);
+ if (err) {
+ error_propagate(errp, err);
return;
}
+
if (((nb_numa_nodes > 0) && (dimm->node >= nb_numa_nodes)) ||
(!nb_numa_nodes && dimm->node)) {
error_setg(errp, "'DIMM property " PC_DIMM_NODE_PROP " has value %"
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 1a0fad74e1..39bffceadf 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -1035,14 +1035,11 @@ static Property ivshmem_plain_properties[] = {
static void ivshmem_plain_realize(PCIDevice *dev, Error **errp)
{
IVShmemState *s = IVSHMEM_COMMON(dev);
+ Error *err = NULL;
- if (!s->hostmem) {
- error_setg(errp, "You must specify a 'memdev'");
- return;
- } else if (host_memory_backend_is_mapped(s->hostmem)) {
- char *path = object_get_canonical_path_component(OBJECT(s->hostmem));
- error_setg(errp, "can't use already busy memdev: %s", path);
- g_free(path);
+ host_memory_backend_validate(s->hostmem, "memdev", &err);
+ if (err) {
+ error_propagate(errp, err);
return;
}
diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
index 2f759578fe..4b7b4cf950 100644
--- a/hw/virtio/virtio-mem.c
+++ b/hw/virtio/virtio-mem.c
@@ -414,16 +414,11 @@ static void virtio_mem_device_realize(DeviceState *dev,
Error **errp)
uint64_t page_size;
/* verify the memdev */
- if (!vm->memdev) {
- error_setg(&local_err, "'%s' property must be set",
- VIRTIO_MEM_MEMDEV_PROP);
- goto out;
- } else if (host_memory_backend_is_mapped(vm->memdev)) {
- char *path = object_get_canonical_path_component(OBJECT(vm->memdev));
-
- error_setg(&local_err, "can't use already busy memdev: %s", path);
- g_free(path);
- goto out;
+ host_memory_backend_validate(vm->memdev, VIRTIO_MEM_MEMDEV_PROP,
+ &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
}
/* verify the node */
diff --git a/hw/virtio/virtio-pmem.c b/hw/virtio/virtio-pmem.c
index 97287e923b..85cb337ed5 100644
--- a/hw/virtio/virtio-pmem.c
+++ b/hw/virtio/virtio-pmem.c
@@ -105,16 +105,11 @@ static void virtio_pmem_realize(DeviceState *dev, Error
**errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VirtIOPMEM *pmem = VIRTIO_PMEM(dev);
+ Error *err = NULL;
- if (!pmem->memdev) {
- error_setg(errp, "virtio-pmem memdev not set");
- return;
- }
-
- if (host_memory_backend_is_mapped(pmem->memdev)) {
- char *path = object_get_canonical_path_component(OBJECT(pmem->memdev));
- error_setg(errp, "can't use already busy memdev: %s", path);
- g_free(path);
+ host_memory_backend_validate(pmem->memdev, "memdev", &err);
+ if (err) {
+ error_propagate(errp, err);
return;
}
diff --git a/include/sysemu/hostmem.h b/include/sysemu/hostmem.h
index 4dbdadd39e..d4dbf108ca 100644
--- a/include/sysemu/hostmem.h
+++ b/include/sysemu/hostmem.h
@@ -65,6 +65,8 @@ MemoryRegion
*host_memory_backend_get_memory(HostMemoryBackend *backend);
void host_memory_backend_set_mapped(HostMemoryBackend *backend, bool mapped);
bool host_memory_backend_is_mapped(HostMemoryBackend *backend);
+void host_memory_backend_validate(HostMemoryBackend *backend,
+ const char *property, Error **errp);
size_t host_memory_backend_pagesize(HostMemoryBackend *memdev);
char *host_memory_backend_get_name(HostMemoryBackend *backend);
--
2.24.1
- Re: [PATCH v2 01/16] virtio-mem: Prototype, (continued)
- [PATCH v2 03/16] hmp: Handle virtio-mem when printing memory device infos, David Hildenbrand, 2020/02/12
- [PATCH v2 04/16] numa: Handle virtio-mem in NUMA stats, David Hildenbrand, 2020/02/12
- [PATCH v2 05/16] pc: Support for virtio-mem-pci, David Hildenbrand, 2020/02/12
- [PATCH v2 06/16] exec: Provide owner when resizing memory region, David Hildenbrand, 2020/02/12
- [PATCH v2 07/16] memory: Add memory_region_max_size() and memory_region_is_resizable(), David Hildenbrand, 2020/02/12
- [PATCH v2 08/16] memory: Disallow resizing to 0, David Hildenbrand, 2020/02/12
- [PATCH v2 09/16] memory-device: properly deal with resizable memory regions, David Hildenbrand, 2020/02/12
- [PATCH v2 10/16] hostmem: Factor out applying settings, David Hildenbrand, 2020/02/12
- [PATCH v2 11/16] hostmem: Factor out common checks into host_memory_backend_validate(),
David Hildenbrand <=
- [PATCH v2 12/16] hostmem: Introduce "managed-size" for memory-backend-ram, David Hildenbrand, 2020/02/12
- [PATCH v2 13/16] qmp/hmp: Expose "managed-size" for memory backends, David Hildenbrand, 2020/02/12
- [PATCH v2 14/16] virtio-mem: Support for resizable memory regions, David Hildenbrand, 2020/02/12
- [PATCH v2 15/16] memory: Add region_resize() callback to memory notifier, David Hildenbrand, 2020/02/12
- [PATCH v2 16/16] kvm: Implement region_resize() for atomic memory section resizes, David Hildenbrand, 2020/02/12
- Re: [PATCH v2 00/16] Ram blocks with resizable anonymous allocations under POSIX, David Hildenbrand, 2020/02/12