tree 51bed27fe9050cae3e7de2d24f55874455316ab2
parent 17a941d854a3f7b0bb916fdeee4c9ffdcc19d8d3
author Andi Kleen <ak@suse.de> 1137015885 +0100
committer Linus Torvalds <torvalds@g5.osdl.org> 1137035095 -0800

[PATCH] x86_64: Clean up copy_*_user

- 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>