2015-04-07 13:11+0200, Paolo Bonzini: > On 02/04/2015 20:44, Radim Krčmář wrote: > > If we were migrated right after __getcpu, but before reading the > > migration_count, we wouldn't notice that we read TSC of a different > > VCPU, nor that KVM's bug made pvti invalid, as only migration_count > > on source VCPU is increased. > > > > Change vdso instead of updating migration_count on destination. > > > > Fixes: 0a4e6be9ca17 ("x86: kvm: Revert "remove sched notifier for cross-cpu migrations"") > > Cc: stable@xxxxxxxxxxxxxxx > > Signed-off-by: Radim Krčmář <rkrcmar@xxxxxxxxxx> > > Applying this, but removing the "Fixes" tag because a guest patch cannot > fix a host patch (it can work around it or complement it). I think it was correct. Both are guest only, the revert just missed some races. (0a4e6be9ca17 has misleading commit message ...) -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html