Re: [libvirt] [RFC PATCH 00/12] qemu: add support to hot-plug/unplug cpu device
On Wed, Jan 21, 2015 at 04:00:52PM +0800, Zhu Guihua wrote:
If you apply the folowing patchset
[PATCH v3 0/7] cpu: add device_add foo-x86_64-cpu support
https://lists.nongnu.org/archive/html/qemu-devel/2015-01/msg01552.html,
and [PATCH v2 00/11] cpu: add i386 cpu hot remove support
https://lists.nongnu.org/archive/html/qemu-devel/2015-01/msg01557.html,
qemu can support hotplug and hot-unplug cpu device.
So this patch series will make libvirt support hotplug and hot-unplug cpu
device for qemu driver, and now only supports one cpu driver which is
'qemu64-x86_64-cpu'.
Also I'm wondering how this interacts with CPU topology. eg lets say
you configure a 16 vCPU guest, and set topology to 2 sockets, 4 cores,
2 threads. Does this hotplug allow you to plug/unplug individual
threads - ie each invididual vCPU, or does it only allow plug/unplug
of sockets - ie 8 vCPUs at a time in this topology.
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|