I know, that this might be more QEMU-specific than a libvirt-topic ... but I hope that someone in here can point me to a solution as well as there are many qemu-users in here as well I assume. - I run an ancient linux-VM with a 2.2.x kernel (I have to keep it up as the software in there is compiled against that ...) We get a lot of dmesg-lines like: spurious APIC interrupt on CPU#0, should never happen I think that this slows the VM down? I tried to disable APIC in the VMs config and in the VM (kernel-option) etc but without success so far. I also tried various clock-settings ... might setting another <type> in the vm.xml help? I have: <os> <type arch='x86_64' machine='pc-1.1'>hvm</type> the original installation was on a Pentium 2 or 3, if I remember correctly. fyi: the host is a Gentoo Linux machine, libvirt 1.2.15, qemu 2.2.1-r2 (=current). Any pointers? google didn't help much here. Thanks, Stefan