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

[Jan Kiszka]

Alexander Graf wrote:
> 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.

--enable-io-thread?

If you had it disabled, it would also answer my question if -smp works
without problems without that feature.

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux