diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-05-14 17:43:17 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-06-19 18:44:19 +0300 |
| commit | 7febe36f9adbb34756a6a6765a36ea49b6e502ac (patch) | |
| tree | 34a47adbcfd145e26558aff8f38168c6cb057e67 /qemu-options.hx | |
| parent | 1f21772db0b14049b1b4bfef1f039b40827c676f (diff) | |
numa: add -numa node,memdev= option
This option provides the infrastructure for binding guest NUMA nodes
to host NUMA nodes. For example:
-object memory-ram,size=1024M,policy=bind,host-nodes=0,id=ram-node0 \
-numa node,nodeid=0,cpus=0,memdev=ram-node0 \
-object memory-ram,size=1024M,policy=interleave,host-nodes=1-3,id=ram-node1 \
-numa node,nodeid=1,cpus=1,memdev=ram-node1
The option replaces "-numa node,mem=".
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
MST: conflict resolution
Diffstat (limited to 'qemu-options.hx')
| -rw-r--r-- | qemu-options.hx | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/qemu-options.hx b/qemu-options.hx index 06111a67cd..ca75760b27 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -95,16 +95,22 @@ specifies the maximum number of hotpluggable CPUs. ETEXI DEF("numa", HAS_ARG, QEMU_OPTION_numa, - "-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node]\n", QEMU_ARCH_ALL) + "-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node]\n" + "-numa node[,memdev=id][,cpus=cpu[-cpu]][,nodeid=node]\n", QEMU_ARCH_ALL) STEXI @item -numa node[,mem=@var{size}][,cpus=@var{cpu[-cpu]}][,nodeid=@var{node}] +@item -numa node[,memdev=@var{id}][,cpus=@var{cpu[-cpu]}][,nodeid=@var{node}] @findex -numa -Simulate a multi node NUMA system. If @samp{mem} +Simulate a multi node NUMA system. If @samp{mem}, @samp{memdev} and @samp{cpus} are omitted, resources are split equally. Also, note that the -@option{numa} option doesn't allocate any of the specified resources. That is, it just assigns existing resources to NUMA nodes. This means that one still has to use the @option{-m}, @option{-smp} options -to allocate RAM and VCPUs respectively. +to allocate RAM and VCPUs respectively, and possibly @option{-object} +to specify the memory backend for the @samp{memdev} suboption. + +@samp{mem} and @samp{memdev} are mutually exclusive. Furthermore, if one +node uses @samp{memdev}, all of them have to use it. ETEXI DEF("add-fd", HAS_ARG, QEMU_OPTION_add_fd, |