On Mon, Aug 11, 2014 at 10:02 PM, Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx> wrote: > @@ -722,9 +719,10 @@ static struct kvm_memslots *install_new_memslots(struct kvm *kvm, > { > struct kvm_memslots *old_memslots = kvm->memslots; > I think you want slots->generation = old_memslots->generation; here. On the KVM_MR_DELETE path, install_new_memslots is called twice so this patch introduces a short window of time where the generation number actually decreases. > - update_memslots(slots, new, kvm->memslots->generation); > + update_memslots(slots, new); > rcu_assign_pointer(kvm->memslots, slots); > synchronize_srcu_expedited(&kvm->srcu); > + slots->generation++; > > kvm_arch_memslots_updated(kvm); > > -- > 1.8.3.1 > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html