Re: Bugs aren't features: X86_FEATURE_FXSAVE_LEAK

From: Bill Davidsen
Date: Tue May 09 2006 - 10:39:58 EST


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.

The initial argument is dead on, bugs should be either presented as a
"fixed" feature, or there could (should?) be a bugs vector which could
be or'd. It's at least possible that AMD might fix this some time.

--
-bill davidsen (davidsen@xxxxxxx)
"The secret to procrastination is to put things off until the
last possible moment - but no longer" -me


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