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    SubjectRe: [PATCH/RFC] stop_machine: make stop_machine_run more virtualization friendly
    Date
    Am Donnerstag, 8. Mai 2008 schrieb Jeremy Fitzhardinge:
    > > 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.


    Yes, cpu_relax on s390 calls diagnose 44. Diagnose 44 translates to yield on
    z/VM and LPAR. Guessing from the number of the diagnose, I think it was used
    on z/VM for timeslice yielding long before Linux came to s390.


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