diff options
| author | Anton Blanchard <anton@samba.org> | 2015-10-29 11:44:01 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-12-01 13:52:25 +1100 |
| commit | 98da581e0846f6d932a4bc46a55458140e20478a (patch) | |
| tree | 492f2ebbd22ed1000f2d61aa8ad9a7b3ef5f1a1b /arch/powerpc/kernel/head_fsl_booke.S | |
| parent | b51b1153d0e78a70767441273331d2de066bb929 (diff) | |
powerpc: Move part of giveup_fpu,altivec,spe into c
Move the MSR modification into new c functions. Removing it from
the low level functions will allow us to avoid costly MSR writes
by batching them up.
Move the check_if_tm_restore_required() check into these new functions.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/head_fsl_booke.S')
| -rw-r--r-- | arch/powerpc/kernel/head_fsl_booke.S | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/head_fsl_booke.S b/arch/powerpc/kernel/head_fsl_booke.S index d6980bbae954..f705171b924b 100644 --- a/arch/powerpc/kernel/head_fsl_booke.S +++ b/arch/powerpc/kernel/head_fsl_booke.S @@ -984,14 +984,10 @@ _GLOBAL(__setup_ehv_ivors) #ifdef CONFIG_SPE /* - * extern void giveup_spe(struct task_struct *prev) + * extern void __giveup_spe(struct task_struct *prev) * */ -_GLOBAL(giveup_spe) - mfmsr r5 - oris r5,r5,MSR_SPE@h - mtmsr r5 /* enable use of SPE now */ - isync +_GLOBAL(__giveup_spe) addi r3,r3,THREAD /* want THREAD of task */ lwz r5,PT_REGS(r3) cmpi 0,r5,0 |