Re: [Qemu-devel] cpu hotplug and windows guest (win2012r2)

[Igor Mammedov]

On Fri, 9 Jan 2015 11:26:08 +0100 (CET)
Alexandre DERUMIER <address@hidden> wrote:

> Hi,
> 
> I'm currently testing cpu hotplug with a windows 2012R2 standard guest,
> 
> and I can't get it too work. (works fine with linux guest).
> 
> host kernel : rhel7 3.10 kernel
> qemu 2.2
> 
> 
> qemu command line : -smp cpus=1,sockets=2,cores=1,maxcpus=2
> 
> Started with 1cpu, topogoly is 2sockets with 1cores.
> 
> 
> Then
> 
> qmp# cpu-add 1
> 
> 
> I can see a new cpu is windows device manager, and event log in the device 
> said that it's online.
> 
> So it should be ok, but.
> 
> I can't see new processor in taskmanager or perfmon. (I had tried to relaunch 
> them to be sure.).
> 
> 
> So, it is a windows bug ? Does I need to do something else ?
it might be a limitation of specific Windows edition,
I've tested it with W2012R2 Datacenter edition where it's supported for sure.

> 
> 
> 
> 
> 
> 
>