[PATCH] x86_64: Clean up copy_*_user

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- Remove optimization for old B stepping Opteron
- Make the fast path for copies with a multiple of eight length faster.
- Minor instruction rearrangement to hopefully avoid a pipeline
stall or two.
- Add comment about errata to consider.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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Andi Kleen 2006-01-11 22:44:45 +01:00 • committed by Linus Torvalds

parent 17a941d854

commit 2cbc9ee35c

1 changed files with 23 additions and 221 deletions

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arch/x86_64/lib/copy_user.S

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