Re: [git pull] x86 fixes

From: H. Peter Anvin
Date: Tue Sep 09 2008 - 13:06:19 EST

Andi Kleen wrote:
Krzysztof Halasa <khc@xxxxxxxxx> writes:

Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:

- "modern 32-bit": PPro and better. Can take CMOV, MMX and TSC for granted.
VIA C3 (Samuel 2/Ezra, 600 - 1000 MHz?, common on VIA EPIA-*: home
theatres etc) can't CMOV.

AFAIK they fixed that in newer BIOS with a microcode update. It's slow, but it works.

Yes, but if it's slower than jmp+mov than you actively want to avoid it.

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