RE: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata

Martin Schlemmer
2003-09-12T14:24:14Z

On Thu, 2003-09-11 at 06:55, richard.brunner@amd.com wrote:
> Jun,
>
> I have to agree with what Andi says. It is in a slow path,
> and we want to guard against user programs that could hit it.
> Making it conditional doesn't buy a lot and would cause lots of
> re-validation of the patch that we would like
> to avoid so we can get this in to the 2.6 kernel ASAP.
> Don't worry! I am pretty certain the patch won't impact the
> performance of the 2.6 kernel on processors from other vendors ;-)
>

Would be nice if somebody with more knowledge about all the
benchmarks and a few non AMD processor machines could test
to see if its really that non critical (*hint* *hint*). Yes,
I am not a kernel dev, but I do know that one or two slowdowns
in an already slow path is not that critical - problem now is
just that 5 or 6 might be an issue =)

Thanks,

--
Martin Schlemmer