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 :| -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list