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 <an...@samba.org> --- Index: linux-powerpc/arch/powerpc/kernel/vector.S =================================================================== --- linux-powerpc.orig/arch/powerpc/kernel/vector.S 2011-04-24 12:38:26.329650611 +1000 +++ linux-powerpc/arch/powerpc/kernel/vector.S 2011-04-24 12:39:27.850785617 +1000 @@ -102,7 +102,7 @@ _GLOBAL(giveup_altivec) MTMSRD(r5) /* enable use of VMX now */ isync PPC_LCMPI 0,r3,0 - beqlr- /* if no previous owner, done */ + beqlr /* if no previous owner, done */ addi r3,r3,THREAD /* want THREAD of task */ PPC_LL r5,PT_REGS(r3) PPC_LCMPI 0,r5,0 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev