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

[Alexandre DERUMIER <aderumier@odiso.com>]

Ok,
I think it's a windows bug,
I have the same topology than you, I don't work.
(I see the new vcpu in device manager, but not in taskmgr or perform)

Rebooting the os make the new vcpu display, so it's seem to be ok on qemu side.


(Just to known, which version of win2012r2 do you use ? standard or datacenter ?)


Thanks for your help!

Regards,

Alexandre
----- Mail original -----
De: "Andrey Korolyov" <andrey@xdel.ru>
À: "aderumier" <aderumier@odiso.com>
Cc: "qemu-devel" <qemu-devel@nongnu.org>
Envoyé: Mercredi 21 Janvier 2015 00:16:45
Objet: Re: [Qemu-devel] cpu hotplug and windows guest (win2012r2)

On Tue, Jan 20, 2015 at 10:06 PM, Alexandre DERUMIER 
<aderumier@odiso.com> wrote: 
> Hi, 
> 
> I have tried with numa enabled, and it's still don't work. 
> Can you send me your vm qemu command line ? 
> 
> 
> Also, with numa I have notice something strange with "info numa" command. 
> 
> starting with -smp socket=2,cores=1 
> 
> # info numa 
> 2 nodes 
> node 0 cpus: 0 
> node 0 size: 2048 MB 
> node 1 cpus: 1 
> node 1 size: 2048 MB 
> 
> ok 
> 
> 
> now: 
> 
> starting with -smp 1,socket=2,cores=1,maxcpus=2 
> 
> # info numa 
> 2 nodes 
> node 0 cpus: 0 
> node 0 size: 2048 MB 
> node 1 cpus: 
> node 1 size: 2048 MB 
> 
> ok 
> 
> 
> now hotplug cpu 
> 
> # cpu-add 1 
> # info numa 
> 2 nodes 
> node 0 cpus: 0 1 
> node 0 size: 2048 MB 
> node 1 cpus: 
> node 1 size: 2048 MB 
> 
> 
> cpu1 has been hotplugged on numa node0 ?????? 
> 
> 

http://lists.gnu.org/archive/html/qemu-devel/2015-01/msg02240.html 
here are working examples. Yes, everything goes to the node0 unless 
specified (you can see an example for bounded sockets in this url 
too).