Re: Bugs aren't features: X86_FEATURE_FXSAVE_LEAK

[H. Peter Anvin]

Andi Kleen wrote:
> "H. Peter Anvin" <hpa@xxxxxxxxx> writes:
>
> > The recent fix for the AMD FXSAVE information leak had a problematic
> > side effect.  It introduced an entry in the x86 features vector which
> > is a bug, not a feature.
>
> It's a non issue because it affects all AMD CPUs (except K5/K6).
> You'll never find a system where only some CPUs have this problem.

It's still wrong architecturally, and we should have a sane way to deal with this as well 
as other bugs.  This isn't the only bug -- we're getting a decent-size collection of them 
already -- and not all of them is going to have that particular property.

	-hpa

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/