Re: [kvm-devel] Problem with SMP boot

[Matthew H. <ma...@ca...>]

Tim Chen wrote:
> Now when I switch to qemu-system-x86_64 without kvm, the guest boots
> with all 4 cpus being specified.  
> 
>>From the boot log, it looks like it is APIC related.
> Is this a known problem?

Boot the /host/ kernel with 'noapic nolapic' and see if that makes a 
difference for you. There is a performance impact under load, but it 
made a world of difference for me when I had issues which were similarly 
kvm specific.

Matt