tree 7d2c859f875d0d5f1eacfbec66d4a9259aaa4893
parent 3b8d1fe0f28202ce1592d9fbc216959b49b72c95
author Jeremy Fitzhardinge <jeremy@goop.org> 1159260754 +0200
committer Andi Kleen <andi@basil.nowhere.org> 1159260754 +0200

[PATCH] i386: fix dubious segment register clear in cpu_init()

Fix a very dubious piece of code in
arch/i386/kernel/cpu/common.c:cpu_init().  This clears out %fs and
%gs, but clobbers %eax in the process without telling gcc.  It turns
out that gcc happens to be not using %eax at that point anyway so it
doesn't matter much, but it looks like a bomb waiting to go off.

This does end up saving an instruction, because gcc wants %eax==0 for
the set_debugreg()s below.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andi Kleen <ak@suse.de>