Re: [Qemu-devel] [PATCH 1/2] pc-dimm: No numa option shouldn't break hotplug memory feature

[Hu Tao]

On Tue, Sep 16, 2014 at 06:39:15PM +0800, zhanghailiang wrote:
> If we do not configure numa option, memory hotplug should work as well.
> It should not depend on numa option.
> 
> Steps to reproduce:
> (1) Start VM: qemu-kvm -m 1024,slots=4,maxmem=8G
> (2) Hotplug memory
> It will fail and reports:
> "'DIMM property node has value 0' which exceeds the number of numa nodes: 0"
> 

I rememberd Tang Chen had a patch for this bug, this is what Andrey suggested:

  I thnk that there should be no
  cases when dimm is plugged (and check from patch is fired up) without
  actually populated NUMA, because not every OS will workaround this by
  faking the node.

https://lists.nongnu.org/archive/html/qemu-devel/2014-08/msg04587.html

Have you tested this patch with Windows guest?

Regards,
Hu