On 07/03/2009 05:41 PM, Andre Przywara wrote:
Hi, currently SMP guests happen to see<n> vCPUs as<n> different sockets. Some guests (Windows comes to mind) have license restrictions and refuse to run on multi-socket machines. So lets introduce a "cores=" parameter to the -cpu option to let the user specify the number of _cores_ the guest should see. This patch has not been tested with all corner cases, so I just want to hear your comments whether a) we need such an option and b) you like this particular approach. Applying this qemu.git patch to qemu-kvm.git fixes Windows SMP boot on some versions, I successfully tried up to -smp 16 -cpu host,cores=8 with WindowsXP Pro.
I thought of using -smp [processors=]2,cores=4,threads=2 (for a total of 16 threads), but I think it makes more sense with -cpu.
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