Re: [Qemu-devel] [PATCH 2/2] Add monitor command mem-nodes

[Paolo Bonzini]

Il 13/06/2013 21:16, Wanlong Gao ha scritto:
> On 06/14/2013 09:05 AM, Anthony Liguori wrote:
>> Paolo Bonzini <address@hidden> writes:
>>
>>> Il 13/06/2013 08:50, Eduardo Habkost ha scritto:
>>>> I believe an interface based on guest physical memory addresses is more
>>>> flexible (and even simpler!) than one that only allows binding of whole
>>>> virtual NUMA nodes.
>>>
>>> And "-numa node" is already one, what about just adding "mem-path=/foo"
>>> or "host_node=NN" suboptions?  Then "-mem-path /foo" would be a shortcut
>>> for "-numa node,mem-path=/foo".
>>>
>>> I even had patches to convert -numa to QemuOpts, I can dig them out if
>>> your interested.
>>
>> Ack.  This is a very reasonable thing to add.
> 
> How about making "-numa node,membind=0" like options, and also provide a
> QMP interface "numa_set guest_node_id mempolicy". So that we can set
> the mempolicy not only for file backed memory but also for anon mapped
> guest numa node. This is full numa support in QEMU as you said. I'm making
> the patches now.

Yup, that's exactly what I called "host_node".  membind also makes
sense, but make it mem-bind or mem-host-node for consistency with mem-path.

Paolo