Re: [Qemu-devel] memory hotplug with 2.1.2

[zhanghailiang <zhang.zhanghailiang@huawei.com>]

Hi,

Have you tried the latest qemu (you can git clone from http://git.qemu.org/qemu.git).

Actually, i have posted a patch fc50ff0666315be5120c70ad00cd0b0097484b84
     pc-dimm: Don't check dimm->node when there is non-NUMA config

     It should not break memory hotplug feature if there is non-NUMA option.

     This patch would also allow to use pc-dimm as replacement for initial memory
     for non-NUMA configs.

     Note: After this patch, the memory hotplug can work normally for Linux guest OS
     when there is non-NUMA option and NUMA option. But not support Windows guest OS
     to hotplug memory with no-NUMA config, actully, it's Windows limitation.

     Reviewed-By: Igor Mammedov <imammedo@redhat.com>
     Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com>
     Acked-by: Michael S. Tsirkin <mst@redhat.com>
     Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

I think this will fix your problem, it will support hotplug a pc-dimm without configure numa node.

Hope this can help you, Thanks

Best Regards,
zhanghailiang

On 2014/10/18 1:11, Mikhail Sennikovskii wrote:
> Hi Andrey, thank you for your answer.
>
> I know I can work around this by specifying a numa node.
> My question is though is the current behaviour considered to be a bug, or
> not. And if yes, when it is expected to get fixed.
>
> Thanks,
> Mikhail
>
> On Fri, Oct 17, 2014 at 5:54 PM, Andrey Korolyov <andrey@xdel.ru> wrote:
>
>> Please try to populate basic (single-node) NUMA topology to workaround
>> this (or specify numa node for dimm).
>>
>