x86-64, asm: Directly access per-cpu IST
authorBrian Gerst <brgerst@gmail.com>
Sat, 31 Jul 2010 16:48:22 +0000 (12:48 -0400)
committerH. Peter Anvin <hpa@zytor.com>
Sun, 1 Aug 2010 23:05:17 +0000 (16:05 -0700)
commitc15a5958a0b6dbf06b3c05972694f04a0c50a4cf
treebc52fafdd57f7560aa25b5faff181381a0c55c2d
parenta378d9338e8dde78314b3a6ae003de351936c729
x86-64, asm: Directly access per-cpu IST

Use a direct per-cpu reference for the IST instead of using a scratch
register.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1280594903-6341-1-git-send-email-brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
arch/x86/kernel/entry_64.S