Messages in this thread | | | Date | Fri, 05 May 2006 11:18:09 -0700 | From | "H. Peter Anvin" <> | Subject | Re: Bugs aren't features: X86_FEATURE_FXSAVE_LEAK |
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Andi Kleen wrote: > "H. Peter Anvin" <hpa@zytor.com> 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
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