On Sun, Jul 8, 2012 at 1:36 AM, Doug Goldstein <cardoe@xxxxxxxxxx> wrote: > On Sat, Jul 7, 2012 at 11:10 AM, Zeeshan Ali (Khattak) > <zeeshanak@xxxxxxxxx> wrote: >> Hi, >> I'm trying to set exact CPU topology to qemu-kvm domains to match >> host's topology. In my case, host topology is: 1 socket, 2 cores and 2 >> threads. If I set the XML like this: > > <snip> > >> The qemu commandline launched for this domain looks like this: >> >> /usr/bin/qemu-kvm -name fedora17-2 -S -M pc-0.15 -cpu >> core2duo,+lahf_lm,+rdtscp,+aes,+popcnt,+sse4.2,+sse4.1,+pdcm,+xtpr,+cx16,+tm2,+est,+smx,+vmx,+ds_cpl,+dtes64,+pclmuldq,+pbe,+tm,+ht,+ss,+acpi,+ds >> -enable-kvm -m 1152 -smp 4,sockets=1,cores=2,threads=2 -uuid > > <snip> > >> >> Despite the '-smp 4,sockets=1,cores=2,threads=2', I see only 1 CPU >> reported by '/proc/cpuinfo' in the guest F17 live. >> >> However, when I manually launch a very similar commandline,': >> >> /usr/bin/qemu-kvm -name fedora17-2 -M pc-0.15 -cpu >> core2duo,+lahf_lm,+rdtscp,+aes,+popcnt,+sse4.2,+sse4.1,+pdcm,+xtpr,+cx16,+tm2,+est,+smx,+vmx,+ds_cpl,+dtes64,+pclmuldq,+pbe,+tm,+ht,+ss,+acpi,+ds >> -m 1G -smp 4,cores=2,threads=2,sockets=1 -uuid >> c573342b-2876-05b8-098e-6d5314cab062 -nodefconfig -enable-kvm -cdrom >> /home/zeenix/ISOs/Fedora-17-i686-Live-Desktop.iso >> >> I see 4 CPUs reported by '/proc/cpuinfo in the guest. Any clues? > > What version of qemu-kvm are you using? Sounds like a bug in > qemu-kvm's command line arg parsing code. I was able to reproduce this with both qemu from git master and qemu-kvm from stock F17 packages (1.0). -- Regards, Zeeshan Ali (Khattak) FSF member#5124 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list