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

[Alexandre DERUMIER <aderumier@odiso.com>]

>>it might be a limitation of specific Windows edition,
>>I've tested it with W2012R2 Datacenter edition where it's supported for sure.

>From the ovirt documentation:

http://www.ovirt.org/Hot_plug_cpu

It should work with any win2012 version. 
(Indeed for win2008, datacenter edition was needed)


----- Mail original -----
De: "Igor Mammedov" <imammedo@redhat.com>
À: "aderumier" <aderumier@odiso.com>
Cc: "qemu-devel" <qemu-devel@nongnu.org>
Envoyé: Lundi 19 Janvier 2015 17:06:37
Objet: Re: [Qemu-devel] cpu hotplug and windows guest (win2012r2)

On Fri, 9 Jan 2015 11:26:08 +0100 (CET) 
Alexandre DERUMIER <aderumier@odiso.com> 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. 

> 
> 
> 
> 
> 
> 
>