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SubjectRe: 2.1.63 - testing Pentium bug workaround..


On Thu, 13 Nov 1997, David S. Miller wrote:
>
> I would expect possible bugs in the mul/div insns with lock prefixes,
> they can be locked can't they? If so do they have illegal addressing
> modes you can form invalid opcodes with?

No, mul/div can't be locked. There aren't all that many instructions that
can, and I personally think that the cmpxchg8b thing is the only one that
shows _this_ particular problem. There might be other bugs out there,
obviously, but I think this one is solved.

Linus


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