Messages in this thread | | | Date | Sat, 02 Nov 2002 06:04:20 -0500 | From | Akira Tsukamoto <> | Subject | Re: [PATCH] 1/2 2.5.45 cleanup & add original copy_ro/from_user |
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On 02 Nov 2002 10:58:35 +0100 Andi Kleen <ak@suse.de> mentioned: > Akira Tsukamoto <at541@columbia.edu> writes: > > > This patch will: > > 1) If it is not X86_MPENTIUMIII or 4, use the original copy routines, > > which does not exist in 2.5.45. > > First you're ignoring Athlon, which also prefers unrolled copies. > > The old user copy functions should then only used when not optimizing for > modern cpus, but not when the minimum level is 386. And perhaps when > CONFIG_SMALL is defined.
Yes, it is ignoring Athlon because my patch is basically just clean up and not changing anything. If you read the 2.5.45, you will see *2.5.45* is also ignoring Athlon and not using unrolled copies.
I am working on optimized version for AMD, go over on this patch. But thank you for your comment, I will consider using CONFIG_SMALL for putting all the old stuff in it.
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