diff options
| author | Anton Blanchard <anton@samba.org> | 2011-05-08 17:20:19 -0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-05-19 00:30:42 -0400 |
| commit | ba00ce1d6e08ad06f19f2ac53fd5c60bbe3fbeeb (patch) | |
| tree | dd0eca5139eb0a2fe55fcfa60feb1f3d03763360 /arch/powerpc | |
| parent | d988f0e3f84cb8a4f85ccdbca6f6fefcc37bedcb (diff) | |
powerpc: Remove static branch hint in giveup_altivec
A static branch hint will override dynamic branch prediction on
recent POWER CPUs. Since we are about to use more altivec in the
kernel remove the static hint in giveup_altivec that assumes
a userspace task is using altivec.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/vector.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index 9de6f396cf85..4d5a3edff49e 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S | |||
| @@ -102,7 +102,7 @@ _GLOBAL(giveup_altivec) | |||
| 102 | MTMSRD(r5) /* enable use of VMX now */ | 102 | MTMSRD(r5) /* enable use of VMX now */ |
| 103 | isync | 103 | isync |
| 104 | PPC_LCMPI 0,r3,0 | 104 | PPC_LCMPI 0,r3,0 |
| 105 | beqlr- /* if no previous owner, done */ | 105 | beqlr /* if no previous owner, done */ |
| 106 | addi r3,r3,THREAD /* want THREAD of task */ | 106 | addi r3,r3,THREAD /* want THREAD of task */ |
| 107 | PPC_LL r5,PT_REGS(r3) | 107 | PPC_LL r5,PT_REGS(r3) |
| 108 | PPC_LCMPI 0,r5,0 | 108 | PPC_LCMPI 0,r5,0 |