>> I *need* to specify non-zero amount of memory for each numa node >>to be seen, if each CPU belongs to different node for example but >>everything else is just fine.
Ok, thanks I'll try to enable numa to see if it's helping (I known that numa is mandatory for memory hotplug, maybe for cpu too) ----- Mail original ----- De: "Andrey Korolyov" <and...@xdel.ru> À: "aderumier" <aderum...@odiso.com> Cc: "qemu-devel" <qemu-devel@nongnu.org> Envoyé: Mercredi 14 Janvier 2015 17:07:41 Objet: Re: [Qemu-devel] cpu hotplug and windows guest (win2012r2) On Fri, Jan 9, 2015 at 4:35 PM, Andrey Korolyov <and...@xdel.ru> wrote: > On Fri, Jan 9, 2015 at 1:26 PM, Alexandre DERUMIER <aderum...@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 ? >> > > Did you populated appropriate topology in arguments? As far as I can > remember from pre-1.1 era CPU hotplug not worked with windows, so it > should be neither lack of configured NUMA or a simply OS-specific > issue. Just to let anyone know that it works well: http://xdel.ru/downloads/windows-hotplugged-cpu.png Topology is a bit rotten (I have two sockets with single CPU in each) and I *need* to specify non-zero amount of memory for each numa node to be seen, if each CPU belongs to different node for example but everything else is just fine.
