Re: [PATCH/RFC] stop_machine: make stop_machine_run more virtualizationfriendly

[Jeremy Fitzhardinge]

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
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