On Wed, Jul 06, 2016 at 12:44:58PM +0200, Paolo Bonzini wrote: > > Paolo, could you help out with an (x86) KVM interface for this? > > If it's just for spin loops, you can check if the version field in the > steal time structure has changed.
That would require remembering the old value, no? That would work with a previous interface proposal, see: http://lkml.kernel.org/r/[email protected] the vcpu_get_yield_count() thing would match that I think. However the current proposal: http://lkml.kernel.org/r/[email protected] dropped that in favour of only vcpu_is_preempted(), which requires being able to tell if a (remote) vcpu is currently running or not, which iirc, isn't possible with the steal time sequence count. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
