qemuBuildMemoryBackendProps: Move @prealloc setting to backend agnostic part

All three memory backends (-file, -ram and -memfd) have .prealloc
attribute. Since we are setting it only for -file, the
corresponding code lives only under if() that handles that
specific backend. But in near future we will want to set the
attribute for other backends too. Therefore, move the
corresponding code outside of the if().

This causes some .argv files to be changed, but the only change
happening there is move of the attribute (best viewed with:
'git show --color-words=.').

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>

src/qemu/qemu_command.c

@@ -3109,13 +3109,11 @@ qemuBuildMemoryBackendProps(virJSONValuePtr *backendProps,
 
         if (mem->nvdimmPath) {
             memPath = g_strdup(mem->nvdimmPath);
-            if (!priv->memPrealloc)
+            prealloc = true;
-                prealloc = true;
         } else if (useHugepage) {
             if (qemuGetDomainHupageMemPath(priv->driver, def, pagesize, &memPath) < 0)
                 return -1;
-            if (!priv->memPrealloc)
+            prealloc = true;
-                prealloc = true;
         } else {
             /* We can have both pagesize and mem source. If that's the case,
              * prefer hugepages as those are more specific. */
@@ -3124,7 +3122,6 @@ qemuBuildMemoryBackendProps(virJSONValuePtr *backendProps,
         }
 
         if (virJSONValueObjectAdd(props,
-                                  "B:prealloc", prealloc,
                                   "s:mem-path", memPath,
                                   NULL) < 0)
             return -1;
@@ -3149,6 +3146,10 @@ qemuBuildMemoryBackendProps(virJSONValuePtr *backendProps,
         backendType = "memory-backend-ram";
     }
 
+    if (!priv->memPrealloc &&
+        virJSONValueObjectAdd(props, "B:prealloc", prealloc, NULL) < 0)
+        return -1;
+
     if (virJSONValueObjectAdd(props, "U:size", mem->size * 1024, NULL) < 0)
         return -1;
 

tests/qemuxml2argvdata/hugepages-memaccess.args

@@ -14,25 +14,25 @@ QEMU_AUDIO_DRV=none \
 -m size=4194304k,slots=16,maxmem=8388608k \
 -realtime mlock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=1073741824,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node2,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node3,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,prealloc=yes,\
-host-nodes=3,policy=bind \
+size=1073741824,host-nodes=3,policy=bind \
 -numa node,nodeid=3,cpus=3,memdev=ram-node3 \
--object memory-backend-file,id=memdimm0,prealloc=yes,\
+-object memory-backend-file,id=memdimm0,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=536870912,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+size=536870912,host-nodes=0-3,policy=bind \
 -device pc-dimm,node=1,memdev=memdimm0,id=dimm0,slot=0,addr=4294967296 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/hugepages-memaccess2.args

@@ -18,9 +18,9 @@ QEMU_AUDIO_DRV=none \
 mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node0,share=no,\
 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,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=1073741824,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+size=1073741824,host-nodes=0-3,policy=bind \
 -numa node,nodeid=1,cpus=1,memdev=ram-node1 \
 -object memory-backend-file,id=ram-node2,\
 mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node2,share=no,\
@@ -30,9 +30,9 @@ size=1073741824,host-nodes=0-3,policy=bind \
 mem-path=/var/lib/libvirt/qemu/ram/-1-QEMUGuest1/ram-node3,share=no,\
 size=1073741824,host-nodes=3,policy=bind \
 -numa node,nodeid=3,cpus=3,memdev=ram-node3 \
--object memory-backend-file,id=memdimm0,prealloc=yes,\
+-object memory-backend-file,id=memdimm0,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=536870912,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+size=536870912,host-nodes=0-3,policy=bind \
 -device pc-dimm,node=1,memdev=memdimm0,id=dimm0,slot=0,addr=4294967296 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/hugepages-numa-nodeset-part.args

@@ -16,8 +16,9 @@ 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,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-SomeDummyHugepagesGu,size=805306368 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-SomeDummyHugepagesGu,prealloc=yes,\
+size=805306368 \
 -numa node,nodeid=1,cpus=1,memdev=ram-node1 \
 -uuid ef1bdff4-27f3-4e85-a807-5fb4d58463cc \
 -display none \

tests/qemuxml2argvdata/hugepages-numa-nodeset.args

@@ -14,17 +14,21 @@ QEMU_AUDIO_DRV=none \
 -m 4096 \
 -realtime mlock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
+size=1073741824 \
 -numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,size=1073741824 \
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
+size=1073741824 \
 -numa node,nodeid=1,cpus=1,memdev=ram-node1 \
--object memory-backend-file,id=ram-node2,prealloc=yes,\
+-object memory-backend-file,id=ram-node2,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
+size=1073741824 \
 -numa node,nodeid=2,cpus=2,memdev=ram-node2 \
--object memory-backend-file,id=ram-node3,prealloc=yes,\
+-object memory-backend-file,id=ram-node3,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
+size=1073741824 \
 -numa node,nodeid=3,cpus=3,memdev=ram-node3 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/hugepages-nvdimm.x86_64-latest.args

@@ -17,11 +17,12 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -m size=1048576k,slots=16,maxmem=1099511627776k \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=1073741824 \
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
+size=1073741824 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=yes,\
-share=yes,size=536870912 \
+prealloc=yes,size=536870912 \
 -device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/hugepages-shared.args

@@ -14,21 +14,21 @@ QEMU_AUDIO_DRV=none \
 -m 4096 \
 -realtime mlock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,size=1073741824,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,share=yes,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node2,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,share=no,prealloc=yes,\
-host-nodes=0-3,policy=bind \
+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,\
+-object memory-backend-file,id=ram-node3,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
-host-nodes=3,policy=bind \
+size=1073741824,host-nodes=3,policy=bind \
 -numa node,nodeid=3,cpus=3,memdev=ram-node3 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-dimm-addr.args

@@ -15,9 +15,9 @@ QEMU_AUDIO_DRV=none \
 -realtime mlock=off \
 -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,\
+-object memory-backend-file,id=memdimm0,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,size=536870912,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
-host-nodes=1-3,policy=bind \
+size=536870912,host-nodes=1-3,policy=bind \
 -device pc-dimm,node=0,memdev=memdimm0,id=dimm0,slot=0,addr=4294967296 \
 -object memory-backend-ram,id=memdimm2,size=536870912 \
 -device pc-dimm,node=0,memdev=memdimm2,id=dimm2,slot=2 \

tests/qemuxml2argvdata/memory-hotplug-dimm.args

@@ -17,9 +17,9 @@ 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,slot=0 \
--object memory-backend-file,id=memdimm1,prealloc=yes,\
+-object memory-backend-file,id=memdimm1,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,size=536870912,\
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-QEMUGuest1,prealloc=yes,\
-host-nodes=1-3,policy=bind \
+size=536870912,host-nodes=1-3,policy=bind \
 -device pc-dimm,node=0,memdev=memdimm1,id=dimm1,slot=1 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-access.x86_64-latest.args

@@ -19,8 +19,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=no,\
-share=no,size=536870912 \
+prealloc=yes,size=536870912 \
 -device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-align.x86_64-latest.args

@@ -19,8 +19,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=no,\
-share=no,size=536870912,align=2097152 \
+prealloc=yes,size=536870912,align=2097152 \
 -device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-label.x86_64-latest.args

@@ -19,8 +19,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=no,\
-share=no,size=536870912 \
+prealloc=yes,size=536870912 \
 -device nvdimm,node=0,label-size=131072,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-pmem.x86_64-latest.args

@@ -19,8 +19,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=no,\
-share=no,size=536870912,pmem=yes \
+prealloc=yes,size=536870912,pmem=yes \
 -device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-ppc64.ppc64-latest.args

@@ -18,7 +18,7 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -numa node,nodeid=0,cpus=0-1,mem=1024 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,prealloc=yes,\
 size=537001984 \
 -device nvdimm,node=0,label-size=131072,\
 uuid=49545eb3-75e1-2d0a-acdd-f0294406c99e,memdev=memnvdimm0,id=nvdimm0,slot=0 \

tests/qemuxml2argvdata/memory-hotplug-nvdimm-readonly.x86_64-latest.args

@@ -19,8 +19,8 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=224395264 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,share=no,\
-share=no,size=536870912 \
+prealloc=yes,size=536870912 \
 -device nvdimm,node=0,unarmed=on,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
 -display none \

tests/qemuxml2argvdata/memory-hotplug-nvdimm.x86_64-latest.args

@@ -19,7 +19,7 @@ file=/tmp/lib/domain--1-QEMUGuest1/master-key.aes \
 -smp 2,sockets=2,dies=1,cores=1,threads=1 \
 -object memory-backend-ram,id=ram-node0,size=1073741824 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
--object memory-backend-file,id=memnvdimm0,prealloc=yes,mem-path=/tmp/nvdimm,\
+-object memory-backend-file,id=memnvdimm0,mem-path=/tmp/nvdimm,prealloc=yes,\
 size=536870912 \
 -device nvdimm,node=0,memdev=memnvdimm0,id=nvdimm0,slot=0 \
 -uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \

tests/qemuxml2argvdata/pages-dimm-discard.args

@@ -15,8 +15,8 @@ QEMU_AUDIO_DRV=none \
 -realtime mlock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
 -numa node,nodeid=0,cpus=0-1,mem=1024 \
--object memory-backend-file,id=memdimm0,prealloc=yes,\
+-object memory-backend-file,id=memdimm0,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-fedora,size=1073741824,\
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-fedora,prealloc=yes,size=1073741824,\
 host-nodes=1-3,policy=bind \
 -device pc-dimm,node=0,memdev=memdimm0,id=dimm0,slot=0 \
 -object memory-backend-file,id=memdimm1,\

tests/qemuxml2argvdata/user-aliases.args

@@ -16,17 +16,17 @@ file=/tmp/lib/domain--1-gentoo/master-key.aes \
 -m 4096 \
 -realtime mlock=off \
 -smp 4,sockets=4,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,prealloc=yes,size=1073741824 \
 -numa node,nodeid=0,cpus=0,memdev=ram-node0 \
--object memory-backend-file,id=ram-node1,prealloc=yes,\
+-object memory-backend-file,id=ram-node1,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,prealloc=yes,size=1073741824 \
 -numa node,nodeid=1,cpus=1,memdev=ram-node1 \
--object memory-backend-file,id=ram-node2,prealloc=yes,\
+-object memory-backend-file,id=ram-node2,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,prealloc=yes,size=1073741824 \
 -numa node,nodeid=2,cpus=2,memdev=ram-node2 \
--object memory-backend-file,id=ram-node3,prealloc=yes,\
+-object memory-backend-file,id=ram-node3,\
-mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,size=1073741824 \
+mem-path=/dev/hugepages1G/libvirt/qemu/-1-gentoo,prealloc=yes,size=1073741824 \
 -numa node,nodeid=3,cpus=3,memdev=ram-node3 \
 -uuid a75aca4b-a02f-2bcb-4a91-c93cd848c34b \
 -no-user-config \

tests/qemuxml2argvdata/vhost-user-fs-hugepages.x86_64-latest.args

@@ -17,8 +17,9 @@ file=/tmp/lib/domain--1-guest/master-key.aes \
 -m 2048 \
 -overcommit mem-lock=off \
 -smp 2,sockets=2,cores=1,threads=1 \
--object memory-backend-file,id=ram-node0,prealloc=yes,\
+-object memory-backend-file,id=ram-node0,\
-mem-path=/dev/hugepages2M/libvirt/qemu/-1-guest,share=yes,size=2147483648 \
+mem-path=/dev/hugepages2M/libvirt/qemu/-1-guest,share=yes,prealloc=yes,\
+size=2147483648 \
 -numa node,nodeid=0,cpus=0-1,memdev=ram-node0 \
 -uuid 1ccfd97d-5eb4-478a-bbe6-88d254c16db7 \
 -display none \