Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch

Andi Kleen
2003-10-01T07:15:41Z

Jamie Lokier <jamie@shareable.org> writes:

>
> Btw, does anyone know if the "prefetchw" instruction is affected by
> the erratum? I see that in current 2.6, only the "prefetchnta"
> instruction is disabled so presumably "prefetchw" is ok?

All prefetch instructions on Athlon/Opteron including prefetchw have the
problem. prefetchw requires a store instead of a load to hit it though.

-Andi