On Wed, 27 May 2020, Maciej W. Rozycki wrote:
> On Tue, 26 May 2020, Mikulas Patocka wrote:
>
> > This patch makes barriers confiorm to the specification.
> >
> > 1. We add mb() before readX_relaxed and writeX_relaxed -
> > memory-barriers.txt claims that these functions must be ordered w.r.t.
> > each other. Alpha doesn't order them, so we need an explicit barrier.
> > 2. We add mb() before reads from the I/O space - so that if there's a
> > write followed by a read, there should be a barrier between them.
> >
> > Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
> > Fixes: cd0e00c10672 ("alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering")
> > Fixes: 92d7223a7423 ("alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering #2")
> > Cc: stable@xxxxxxxxxxxxxxx # v4.17+
> > Acked-by: Ivan Kokshaysky <ink@xxxxxxxxxxxxxxxxxxxx>
>
> LGTM, thanks for persistence!
>
> Reviewed-by: Maciej W. Rozycki <macro@xxxxxxxxxxxxxx>
>
> Maciej
Hi
Will you submit the patch to Linus' tree in this merge window?
Mikulas
