On 06/09/16 at 01:28P, Borislav Petkov wrote: > On Thu, Jun 09, 2016 at 01:21:18PM +0200, Paolo Bonzini wrote: > > This is basically implementing a seqcount. It needs two barriers and, > > Why does it need the two barriers? More details please.
Hi, Borislav. It's a seqcount-like. We should confirm that reading flags occurs between two reading version. To make complier do not reorder, two barriers are necessary. Thanks Minfei
