[Qemu-devel] Re: [RfC PATCH 08/11] spice: add qxl device

[Richard Henderson]

On 04/16/2010 05:18 AM, Paolo Bonzini wrote:
> > > I'd just use __sync_fetch_and_or here.
> >
> > Good idea.  I think we can zap the memory barrier and fix a small race
> > while being at it, see the incremental fix below.
>
> Not sure about the memory barrier semantics of __sync_* (rth?), but
> besides that the patch seems like a good idea.

The semantics of __sync_*, with only 2 exceptions, is full barrier.


r~