* Dan Williams <dan.j.willi...@intel.com> wrote:

> > The flip side is that if the MFENCE stalls the STAC that is ahead of it 
> > could be
> > processed for 'free' - while it's always post barrier with my suggestion.
> 
> This 'for free' aspect is what I aiming for.

Ok.

> >
> > But in any case it would be nice to see a discussion of this aspect in the
> > changelog, even if the patch does not change.
> 
> I'll add a note to the changelog that having the fence after the
> 'stac' hopefully allows some overlap of the cost of 'stac' and the
> flushing of the instruction pipeline.

Perfect!

Thanks,

        Ingo

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