Kenni Lund wrote: > 2010/5/28 Marcelino Mata <mmata at multimatic.com>: > >> Has anyone had any success getting WinXP 32bit to use 4 CPU's under >> Centos 5.5 KVM? >> >> I have tried everything and the best I can get is 2 CPU's. I tried >> everything listed here >> http://www.linux-kvm.com/content/running-windows-smp-guests I am using >> the VIRTIO drivers. >> > > As it is discussed in the comments on the page you have linked above, > XP only supports 2 CPUs but more cores. > > AFAIK KVM will always emulate CPUs not cores. > In fact, newer qemu/kvm supports "cores" parameter when used with smp: https://patchwork.kernel.org/patch/33961/ RHEL6 beta has new kvm and qemu - it is possible to use multi-core CPU within virtualized winXP there. Regards, Nenad