Hi, i got a new Xeon E5520 (4 cores, 8 threads), and I'm testing some Windows guests. My configuration is as follows: - Arch Linux - Kernel 2.6.32.7 - Qemu-Kvm 0.12.2 1st test: identify the correct line for smp in my case, I tried with: -smp 8,cores=4,threads=8 in this way only Windows 2003 Server works fine (showing 8 cpus), blue screen for Windows Server 2008 and Windows 7 (both 32bit and 64 bit versions) 2nd test: i lowered smp to 4 and installed both windows 7 and windows server 2008. Installation goes fine, but at first boot I get: kvm: unhandled exit 80000021 kvm_run returned -22 This only with 64bit guests, 32bit guests boot fine I've tried to delete the smp call from the commandline, but with 1 cpu I got the same problem on 64bit guests I have another E5520 coming for my dual motherboard... what smp line do you suggest for a system with 2 cpu, 8 physical cores and 16 threads? Thanks for your attention. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html