Re: [Qemu-devel] [PATCH v9] Allow setting NUMA distance for different NUMA nodes

[Eric Blake <eblake@redhat.com>]

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On 04/26/2017 09:35 PM, He Chen wrote:
> This patch is going to add SLIT table support in QEMU, and provides
> additional option `dist` for command `-numa` to allow user set vNUMA
> distance by QEMU command.
> 
> With this patch, when a user wants to create a guest that contains
> several vNUMA nodes and also wants to set distance among those nodes,
> the QEMU command would like:
> 
> ```
> -numa node,nodeid=0,cpus=0 \
> -numa node,nodeid=1,cpus=1 \
> -numa node,nodeid=2,cpus=2 \
> -numa node,nodeid=3,cpus=3 \
> -numa dist,src=0,dst=1,val=21 \
> -numa dist,src=0,dst=2,val=31 \
> -numa dist,src=0,dst=3,val=41 \
> -numa dist,src=1,dst=2,val=21 \
> -numa dist,src=1,dst=3,val=31 \
> -numa dist,src=2,dst=3,val=21 \
> ```
> 
> Signed-off-by: He Chen <he.chen@linux.intel.com>
> 
> ---
> Changes since v8:
> * numa_{node, distance}_parse --> parse_numa_{node, distance}
> * Comments refinement.


> ---
>  hw/acpi/aml-build.c         |  26 +++++++++
>  hw/i386/acpi-build.c        |   4 ++
>  include/hw/acpi/aml-build.h |   1 +
>  include/sysemu/numa.h       |   2 +
>  include/sysemu/sysemu.h     |   4 ++
>  numa.c                      | 137 +++++++++++++++++++++++++++++++++++++++++++-
>  qapi-schema.json            |  30 +++++++++-
>  qemu-options.hx             |  16 +++++-
>  8 files changed, 215 insertions(+), 5 deletions(-)

Markus has asked that all new QMP commands have some testsuite exposure;
he may have some advice on what test would be best to modify to give us
some coverage of this feature.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org


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