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

[Alexander Graf]

On 14.05.2010, at 17:54, Jan Kiszka wrote:

> 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.

Ah, yes, that's different.

And with --enable-io-thread I finally also get the virtio-console hang again! 
Yay!


Alex