[Qemu-devel] Re: [PATCH 10/12] kvm: enable smp > 1

[Alexander Graf]

On 14.05.2010, at 17:48, Avi Kivity wrote:

> On 05/14/2010 05:06 PM, Alexander Graf wrote:
>> On 12.05.2010, at 23:25, Marcelo Tosatti wrote:
>> 
>>   
>>> Process INIT/SIPI requests and enable -smp>  1.
>>>     
>> Does this enable real SMP or does it still only allow one vcpu to run at a 
>> time?
>> 
>>   
> 
> The realest ever.  Still doesn't use in-kernel irqchip (qemu-kvm does "real" 
> smp with -no-kvm-irqchip as well).

That's odd. On S390 I only get at most 100% cpu usage no matter how much -smp I 
pass.

Alex