Re: [kvm-devel] [PATCH/RFC] stop_machine: make stop_machine_run more virtualization friendly

[Jeremy F. <je...@go...>]

Christian Borntraeger wrote:
> I really like 64 guest cpus as a good testcase for all kind of things. 
>   

Sure, I do the same kind of thing.

>> I think x86 (at least) is now using ticket locks, which is fair.  Which 
>> kernel are you seeing this problem on?
>>     
>
> Sorry, forgot to mention. Its kvm.git from 2 days ago on s390.
>   

And on s390 cpu_relax yields the vcpu?  That's not common behaviour 
across architectures.

    J