[libvirt] [PATCH 3/5] qemu: Implement NVDIMM
Michal Privoznik
mprivozn at redhat.com
Mon Aug 1 15:10:07 UTC 2016
So, majority of the code is just ready as-is. Well, with one
slight change: differentiate between dimm and nvdimm in places
like device alias generation, generating the command line and so
on.
Speaking of the command line, we also need to append 'nvdimm=on'
to the '-machine' argument so that the nvdimm feature is
advertised in the ACPI tables properly.
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/qemu/qemu_alias.c | 12 ++-
src/qemu/qemu_command.c | 90 ++++++++++++++--------
src/qemu/qemu_command.h | 1 +
src/qemu/qemu_domain.c | 28 +++++--
src/qemu/qemu_hotplug.c | 2 +-
.../qemuxml2argv-hugepages-numa.args | 5 +-
.../qemuxml2argv-hugepages-pages.args | 24 +++---
.../qemuxml2argv-hugepages-pages2.args | 8 +-
.../qemuxml2argv-hugepages-pages3.args | 4 +-
.../qemuxml2argv-hugepages-shared.args | 22 +++---
.../qemuxml2argv-memory-hotplug-dimm-addr.args | 5 +-
.../qemuxml2argv-memory-hotplug-dimm.args | 5 +-
.../qemuxml2argv-memory-hotplug-nvdimm.args | 25 ++++++
tests/qemuxml2argvtest.c | 4 +-
14 files changed, 155 insertions(+), 80 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm.args
diff --git a/src/qemu/qemu_alias.c b/src/qemu/qemu_alias.c
index 51a654a..57e4cea 100644
--- a/src/qemu/qemu_alias.c
+++ b/src/qemu/qemu_alias.c
@@ -337,13 +337,19 @@ qemuAssignDeviceMemoryAlias(virDomainDefPtr def,
size_t i;
int maxidx = 0;
int idx;
+ const char *prefix;
+
+ if (mem->model == VIR_DOMAIN_MEMORY_MODEL_DIMM)
+ prefix = "dimm";
+ else
+ prefix = "nvdimm";
for (i = 0; i < def->nmems; i++) {
- if ((idx = qemuDomainDeviceAliasIndex(&def->mems[i]->info, "dimm")) >= maxidx)
+ if ((idx = qemuDomainDeviceAliasIndex(&def->mems[i]->info, prefix)) >= maxidx)
maxidx = idx + 1;
}
- if (virAsprintf(&mem->info.alias, "dimm%d", maxidx) < 0)
+ if (virAsprintf(&mem->info.alias, "%s%d", prefix, maxidx) < 0)
return -1;
return 0;
@@ -443,7 +449,7 @@ qemuAssignDeviceAliases(virDomainDefPtr def, virQEMUCapsPtr qemuCaps)
return -1;
}
for (i = 0; i < def->nmems; i++) {
- if (virAsprintf(&def->mems[i]->info.alias, "dimm%zu", i) < 0)
+ if (qemuAssignDeviceMemoryAlias(def, def->mems[i]) < 0)
return -1;
}
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index f5a68cc..18ba7b6 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3063,6 +3063,7 @@ qemuBuildControllerDevCommandLine(virCommandPtr cmd,
* to, or -1 if NUMA is not used in the guest
* @hostNodes: map of host nodes to alloc the memory in, NULL for default
* @autoNodeset: fallback nodeset in case of automatic numa placement
+ * @memPath: request memory-backend-file with specific mem-path
* @def: domain definition object
* @qemuCaps: qemu capabilities object
* @cfg: qemu driver config object
@@ -3084,6 +3085,7 @@ qemuBuildMemoryBackendStr(unsigned long long size,
int guestNode,
virBitmapPtr userNodeset,
virBitmapPtr autoNodeset,
+ const char *memPath,
virDomainDefPtr def,
virQEMUCapsPtr qemuCaps,
virQEMUDriverConfigPtr cfg,
@@ -3175,35 +3177,42 @@ qemuBuildMemoryBackendStr(unsigned long long size,
if (!(props = virJSONValueNewObject()))
return -1;
- if (pagesize || hugepage) {
- if (pagesize) {
- /* Now lets see, if the huge page we want to use is even mounted
- * and ready to use */
- for (i = 0; i < cfg->nhugetlbfs; i++) {
- if (cfg->hugetlbfs[i].size == pagesize)
- break;
- }
+ if (memPath || pagesize || hugepage) {
+ if (pagesize || hugepage) {
+ if (pagesize) {
+ /* Now lets see, if the huge page we want to use is even mounted
+ * and ready to use */
+ for (i = 0; i < cfg->nhugetlbfs; i++) {
+ if (cfg->hugetlbfs[i].size == pagesize)
+ break;
+ }
- if (i == cfg->nhugetlbfs) {
- virReportError(VIR_ERR_INTERNAL_ERROR,
- _("Unable to find any usable hugetlbfs mount for %llu KiB"),
- pagesize);
- goto cleanup;
- }
+ if (i == cfg->nhugetlbfs) {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unable to find any usable hugetlbfs mount for %llu KiB"),
+ pagesize);
+ goto cleanup;
+ }
- if (!(mem_path = qemuGetHugepagePath(&cfg->hugetlbfs[i])))
- goto cleanup;
- } else {
- if (!(mem_path = qemuGetDefaultHugepath(cfg->hugetlbfs,
- cfg->nhugetlbfs)))
- goto cleanup;
+ if (!(mem_path = qemuGetHugepagePath(&cfg->hugetlbfs[i])))
+ goto cleanup;
+ } else {
+ if (!(mem_path = qemuGetDefaultHugepath(cfg->hugetlbfs,
+ cfg->nhugetlbfs)))
+ goto cleanup;
+ }
}
*backendType = "memory-backend-file";
if (virJSONValueObjectAdd(props,
+ "s:mem-path", memPath ? memPath : mem_path,
+ NULL) < 0)
+ goto cleanup;
+
+ if (!memPath && (pagesize || hugepage) &&
+ virJSONValueObjectAdd(props,
"b:prealloc", true,
- "s:mem-path", mem_path,
NULL) < 0)
goto cleanup;
@@ -3255,7 +3264,7 @@ qemuBuildMemoryBackendStr(unsigned long long size,
}
/* If none of the following is requested... */
- if (!pagesize && !userNodeset && !memAccess && !nodeSpecified && !force) {
+ if (!pagesize && !userNodeset && !memAccess && !nodeSpecified && !force && !memPath) {
/* report back that using the new backend is not necessary
* to achieve the desired configuration */
ret = 1;
@@ -3311,7 +3320,7 @@ qemuBuildMemoryCellBackendStr(virDomainDefPtr def,
goto cleanup;
if ((rc = qemuBuildMemoryBackendStr(memsize, 0, cell, NULL, auto_nodeset,
- def, qemuCaps, cfg, &backendType,
+ NULL, def, qemuCaps, cfg, &backendType,
&props, false)) < 0)
goto cleanup;
@@ -3353,7 +3362,7 @@ qemuBuildMemoryDimmBackendStr(virDomainMemoryDefPtr mem,
if (qemuBuildMemoryBackendStr(mem->size, mem->pagesize,
mem->targetNode, mem->sourceNodes, auto_nodeset,
- def, qemuCaps, cfg,
+ mem->path, def, qemuCaps, cfg,
&backendType, &props, true) < 0)
goto cleanup;
@@ -3371,6 +3380,7 @@ char *
qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem)
{
virBuffer buf = VIR_BUFFER_INITIALIZER;
+ const char *device;
if (!mem->info.alias) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -3379,8 +3389,15 @@ qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem)
}
switch ((virDomainMemoryModel) mem->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
case VIR_DOMAIN_MEMORY_MODEL_DIMM:
- virBufferAddLit(&buf, "pc-dimm,");
+
+ if (mem->model == VIR_DOMAIN_MEMORY_MODEL_DIMM)
+ device = "pc-dimm";
+ else
+ device = "nvdimm";
+
+ virBufferAsprintf(&buf, "%s,", device);
if (mem->targetNode >= 0)
virBufferAsprintf(&buf, "node=%d,", mem->targetNode);
@@ -3395,12 +3412,6 @@ qemuBuildMemoryDeviceStr(virDomainMemoryDefPtr mem)
break;
- case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
- virReportError(VIR_ERR_NO_SUPPORT, "%s",
- _("nvdimm not supported yet"));
- return NULL;
- break;
-
case VIR_DOMAIN_MEMORY_MODEL_NONE:
case VIR_DOMAIN_MEMORY_MODEL_LAST:
break;
@@ -6935,6 +6946,7 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
virQEMUCapsPtr qemuCaps)
{
bool obsoleteAccel = false;
+ size_t i;
/* This should *never* be NULL, since we always provide
* a machine in the capabilities data for QEMU. So this
@@ -6970,6 +6982,15 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
"with this QEMU binary"));
return -1;
}
+
+ for (i = 0; i < def->nmems; i++) {
+ if (def->mems[i]->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("nvdimm not is not available "
+ "with this QEMU binary"));
+ return -1;
+ }
+ }
} else {
virBuffer buf = VIR_BUFFER_INITIALIZER;
virTristateSwitch vmport = def->features[VIR_DOMAIN_FEATURE_VMPORT];
@@ -7062,6 +7083,13 @@ qemuBuildMachineCommandLine(virCommandPtr cmd,
}
}
+ for (i = 0; i < def->nmems; i++) {
+ if (def->mems[i]->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM) {
+ virBufferAddLit(&buf, ",nvdimm=on");
+ break;
+ }
+ }
+
virCommandAddArgBuffer(cmd, &buf);
}
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index c4d0567..040c0f5 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -119,6 +119,7 @@ int qemuBuildMemoryBackendStr(unsigned long long size,
int guestNode,
virBitmapPtr userNodeset,
virBitmapPtr autoNodeset,
+ const char *memPath,
virDomainDefPtr def,
virQEMUCapsPtr qemuCaps,
virQEMUDriverConfigPtr cfg,
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 8948ac1..51f67df 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -5244,12 +5244,6 @@ qemuDomainDefValidateMemoryHotplug(const virDomainDef *def,
return 0;
}
- if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PC_DIMM)) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
- _("memory hotplug isn't supported by this QEMU binary"));
- return -1;
- }
-
if (!ARCH_IS_PPC64(def->os.arch)) {
/* due to guest support, qemu would silently enable NUMA with one node
* once the memory hotplug backend is enabled. To avoid possible
@@ -5273,6 +5267,28 @@ qemuDomainDefValidateMemoryHotplug(const virDomainDef *def,
for (i = 0; i < def->nmems; i++) {
hotplugMemory += def->mems[i]->size;
+ switch ((virDomainMemoryModel) def->mems[i]->model) {
+ case VIR_DOMAIN_MEMORY_MODEL_DIMM:
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PC_DIMM)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("memory hotplug isn't supported by this QEMU binary"));
+ return -1;
+ }
+ break;
+
+ case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
+ if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_NVDIMM)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("nvdimm isn't supported by this QEMU binary"));
+ return -1;
+ }
+ break;
+
+ case VIR_DOMAIN_MEMORY_MODEL_NONE:
+ case VIR_DOMAIN_MEMORY_MODEL_LAST:
+ break;
+ }
+
/* already existing devices don't need to be checked on hotplug */
if (!mem &&
qemuDomainDefValidateMemoryHotplugDevice(def->mems[i], def) < 0)
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index b970448..e4716c2 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -1856,7 +1856,7 @@ qemuDomainAttachMemory(virQEMUDriverPtr driver,
if (qemuBuildMemoryBackendStr(mem->size, mem->pagesize,
mem->targetNode, mem->sourceNodes, NULL,
- vm->def, priv->qemuCaps, cfg,
+ mem->path, vm->def, priv->qemuCaps, cfg,
&backendType, &props, true) < 0)
goto cleanup;
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-numa.args b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-numa.args
index 2eb006e..dd12751 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-numa.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-numa.args
@@ -13,9 +13,8 @@ QEMU_AUDIO_DRV=spice \
-mem-prealloc \
-mem-path /dev/hugepages2M/libvirt/qemu \
-numa node,nodeid=0,cpus=0-1,mem=1024 \
--object memory-backend-file,id=memdimm0,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=1-3,\
-policy=bind \
+-object memory-backend-file,id=memdimm0,mem-path=/dev/hugepages1G/libvirt/qemu,\
+prealloc=yes,size=1073741824,host-nodes=1-3,policy=bind \
-device pc-dimm,node=0,memdev=memdimm0,id=dimm0 \
-uuid 63840878-0deb-4095-97e6-fc444d9bc9fa \
-nodefaults \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages.args b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages.args
index 9f0e696..2a196ab 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages.args
@@ -10,21 +10,21 @@ QEMU_AUDIO_DRV=none \
-M pc \
-m 4096 \
-smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=0-3,\
-policy=bind \
+-object memory-backend-file,id=ram-node0,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=0-3,policy=bind \
-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,size=1073741824,host-nodes=0-3,\
-policy=bind \
+-object memory-backend-file,id=ram-node1,\
+mem-path=/dev/hugepages2M/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=0-3,policy=bind \
-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
--object memory-backend-file,id=ram-node2,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=0-3,\
-policy=bind \
+-object memory-backend-file,id=ram-node2,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=0-3,policy=bind \
-numa node,nodeid=2,cpus=2,memdev=ram-node2 \
--object memory-backend-file,id=ram-node3,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=3,\
-policy=bind \
+-object memory-backend-file,id=ram-node3,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=3,policy=bind \
-numa node,nodeid=3,cpus=3,memdev=ram-node3 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages2.args b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages2.args
index 447bb52..30f87a8 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages2.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages2.args
@@ -10,11 +10,11 @@ QEMU_AUDIO_DRV=none \
-M pc \
-m 1024 \
-smp 2,sockets=2,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,size=268435456 \
+-object memory-backend-file,id=ram-node0,\
+mem-path=/dev/hugepages2M/libvirt/qemu,prealloc=yes,size=268435456 \
-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,size=805306368 \
+-object memory-backend-file,id=ram-node1,\
+mem-path=/dev/hugepages2M/libvirt/qemu,prealloc=yes,size=805306368 \
-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
-uuid ef1bdff4-27f3-4e85-a807-5fb4d58463cc \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages3.args b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages3.args
index 57dd3fa..92045a0 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages3.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages3.args
@@ -12,8 +12,8 @@ QEMU_AUDIO_DRV=none \
-smp 2,sockets=2,cores=1,threads=1 \
-object memory-backend-ram,id=ram-node0,size=268435456 \
-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=805306368 \
+-object memory-backend-file,id=ram-node1,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=805306368 \
-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
-uuid ef1bdff4-27f3-4e85-a807-5fb4d58463cc \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-shared.args b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-shared.args
index f9fc218..aaa9e99 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-hugepages-shared.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hugepages-shared.args
@@ -10,21 +10,21 @@ QEMU_AUDIO_DRV=none \
-M pc \
-m 4096 \
-smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=0-3,\
-policy=bind \
+-object memory-backend-file,id=ram-node0,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=0-3,policy=bind \
-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,share=yes,size=1073741824,\
+-object memory-backend-file,id=ram-node1,\
+mem-path=/dev/hugepages2M/libvirt/qemu,prealloc=yes,share=yes,size=1073741824,\
host-nodes=0-3,policy=bind \
-numa node,nodeid=1,cpus=1,memdev=ram-node1 \
--object memory-backend-file,id=ram-node2,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,share=no,size=1073741824,host-nodes=0-3,\
-policy=bind \
+-object memory-backend-file,id=ram-node2,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,share=no,size=1073741824,\
+host-nodes=0-3,policy=bind \
-numa node,nodeid=2,cpus=2,memdev=ram-node2 \
--object memory-backend-file,id=ram-node3,prealloc=yes,\
-mem-path=/dev/hugepages1G/libvirt/qemu,size=1073741824,host-nodes=3,\
-policy=bind \
+-object memory-backend-file,id=ram-node3,\
+mem-path=/dev/hugepages1G/libvirt/qemu,prealloc=yes,size=1073741824,\
+host-nodes=3,policy=bind \
-numa node,nodeid=3,cpus=3,memdev=ram-node3 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm-addr.args b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm-addr.args
index 1c881c6..ea46c82 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm-addr.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm-addr.args
@@ -11,9 +11,8 @@ QEMU_AUDIO_DRV=none \
-m size=219136k,slots=16,maxmem=1099511627776k \
-smp 2,sockets=2,cores=1,threads=1 \
-numa node,nodeid=0,cpus=0-1,mem=214 \
--object memory-backend-file,id=memdimm0,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,size=536870912,host-nodes=1-3,\
-policy=bind \
+-object memory-backend-file,id=memdimm0,mem-path=/dev/hugepages2M/libvirt/qemu,\
+prealloc=yes,size=536870912,host-nodes=1-3,policy=bind \
-device pc-dimm,node=0,memdev=memdimm0,id=dimm0,slot=0,addr=4294967296 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.args b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.args
index fa64fcf..dc58614 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-dimm.args
@@ -13,9 +13,8 @@ QEMU_AUDIO_DRV=none \
-numa node,nodeid=0,cpus=0-1,mem=214 \
-object memory-backend-ram,id=memdimm0,size=536870912 \
-device pc-dimm,node=0,memdev=memdimm0,id=dimm0 \
--object memory-backend-file,id=memdimm1,prealloc=yes,\
-mem-path=/dev/hugepages2M/libvirt/qemu,size=536870912,host-nodes=1-3,\
-policy=bind \
+-object memory-backend-file,id=memdimm1,mem-path=/dev/hugepages2M/libvirt/qemu,\
+prealloc=yes,size=536870912,host-nodes=1-3,policy=bind \
-device pc-dimm,node=0,memdev=memdimm1,id=dimm1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-nographic \
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm.args b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm.args
new file mode 100644
index 0000000..8cda774
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-memory-hotplug-nvdimm.args
@@ -0,0 +1,25 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-machine pc,accel=tcg,nvdimm=on \
+-m size=219136k,slots=16,maxmem=1099511627776k \
+-smp 2,sockets=2,cores=1,threads=1 \
+-numa node,nodeid=0,cpus=0-1,mem=214 \
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,size=536870912 \
+-device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index a5d51a8..a53e49f 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1946,7 +1946,7 @@ mymain(void)
DO_TEST_FAILURE("memory-align-fail", NONE);
DO_TEST_FAILURE("memory-hotplug-nonuma", QEMU_CAPS_DEVICE_PC_DIMM);
- DO_TEST_FAILURE("memory-hotplug", NONE);
+ DO_TEST("memory-hotplug", NONE);
DO_TEST("memory-hotplug", QEMU_CAPS_DEVICE_PC_DIMM, QEMU_CAPS_NUMA);
DO_TEST("memory-hotplug-dimm", QEMU_CAPS_DEVICE_PC_DIMM, QEMU_CAPS_NUMA,
QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
@@ -1954,6 +1954,8 @@ mymain(void)
QEMU_CAPS_OBJECT_MEMORY_FILE);
DO_TEST("memory-hotplug-ppc64-nonuma", QEMU_CAPS_KVM, QEMU_CAPS_DEVICE_PC_DIMM, QEMU_CAPS_NUMA,
QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
+ DO_TEST("memory-hotplug-nvdimm", QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_DEVICE_NVDIMM,
+ QEMU_CAPS_NUMA, QEMU_CAPS_OBJECT_MEMORY_RAM, QEMU_CAPS_OBJECT_MEMORY_FILE);
DO_TEST("machine-aeskeywrap-on-caps",
QEMU_CAPS_MACHINE_OPT, QEMU_CAPS_AES_KEY_WRAP,
--
2.8.4
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