Messages in this thread |  | | Subject | Re: [patch] string-486.h modified | Date | Fri, 1 Sep 2000 21:38:41 +0100 (BST) | From | Alan Cox <> |
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> However, in 2.5.0 we should apply it, and force it on *all* cpus just > to test it well. Then in 2.5.10 we should turn it off for > pentium/MMX+.
Even original pentium has hardware optimised rep movs fast paths. Its just a few cpus they disable it via undocumented magic (ditto it seems a couple of PII chip steppings judging by msr usage traces of bioses coming up in bochs)
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