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From: Alexandre DERUMIER <aderumier@odiso.com>
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Subject: Re: [Qemu-devel] cpu hotplug and windows guest (win2012r2)
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To: Andrey Korolyov <andrey@xdel.ru>
Cc: qemu-devel <qemu-devel@nongnu.org>

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 s=
ide.


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


Thanks for your help!

Regards,

Alexandre
----- Mail original -----
De: "Andrey Korolyov" <andrey@xdel.ru>
=C3=80: "aderumier" <aderumier@odiso.com>
Cc: "qemu-devel" <qemu-devel@nongnu.org>
Envoy=C3=A9: 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=20
<aderumier@odiso.com> wrote:=20
> Hi,=20
>=20
> I have tried with numa enabled, and it's still don't work.=20
> Can you send me your vm qemu command line ?=20
>=20
>=20
> Also, with numa I have notice something strange with "info numa" command.=
=20
>=20
> starting with -smp socket=3D2,cores=3D1=20
>=20
> # info numa=20
> 2 nodes=20
> node 0 cpus: 0=20
> node 0 size: 2048 MB=20
> node 1 cpus: 1=20
> node 1 size: 2048 MB=20
>=20
> ok=20
>=20
>=20
> now:=20
>=20
> starting with -smp 1,socket=3D2,cores=3D1,maxcpus=3D2=20
>=20
> # info numa=20
> 2 nodes=20
> node 0 cpus: 0=20
> node 0 size: 2048 MB=20
> node 1 cpus:=20
> node 1 size: 2048 MB=20
>=20
> ok=20
>=20
>=20
> now hotplug cpu=20
>=20
> # cpu-add 1=20
> # info numa=20
> 2 nodes=20
> node 0 cpus: 0 1=20
> node 0 size: 2048 MB=20
> node 1 cpus:=20
> node 1 size: 2048 MB=20
>=20
>=20
> cpu1 has been hotplugged on numa node0 ??????=20
>=20
>=20

http://lists.gnu.org/archive/html/qemu-devel/2015-01/msg02240.html=20
here are working examples. Yes, everything goes to the node0 unless=20
specified (you can see an example for bounded sockets in this url=20
too).=20