diff options
| author |   Anton Blanchard <anton@samba.org> | 2015-10-29 11:44:07 +1100 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2015-12-01 13:52:26 +1100 |
| commit | 1f2e25b2d552cade43eacb2edc4e7f01c1cfecb3 (patch) | |
| tree | c5176a84fe7cfbab1c964015a210b627cf0d879e /arch | |
| parent | powerpc: Add ppc_strict_facility_enable boot option (diff) | |
| download | linux-dev-1f2e25b2d552cade43eacb2edc4e7f01c1cfecb3.tar.xz linux-dev-1f2e25b2d552cade43eacb2edc4e7f01c1cfecb3.zip | |
powerpc: Remove fp_enable() and vec_enable(), use msr_check_and_{set, clear}()
More consolidation of our MSR available bit handling.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/fpu.S | 16 | ||||
| -rw-r--r-- | arch/powerpc/kernel/process.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/kernel/vector.S | 10 |
4 files changed, 4 insertions, 30 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index a2e891840806..ac2330820b9a 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -380,8 +380,6 @@ extern int set_endian(struct task_struct *tsk, unsigned int val); extern int get_unalign_ctl(struct task_struct *tsk, unsigned long adr); extern int set_unalign_ctl(struct task_struct *tsk, unsigned int val); -extern void fp_enable(void); -extern void vec_enable(void); extern void load_fp_state(struct thread_fp_state *fp); extern void store_fp_state(struct thread_fp_state *fp); extern void load_vr_state(struct thread_vr_state *vr); diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S index 431ab571ed1b..2117eaca3d28 100644 --- a/arch/powerpc/kernel/fpu.S +++ b/arch/powerpc/kernel/fpu.S @@ -77,22 +77,6 @@ END_FTR_SECTION_IFSET(CPU_FTR_VSX) #endif /* CONFIG_PPC_TRANSACTIONAL_MEM */ /* - * Enable use of the FPU, and VSX if possible, for the caller. - */ -_GLOBAL(fp_enable) - mfmsr r3 - ori r3,r3,MSR_FP -#ifdef CONFIG_VSX -BEGIN_FTR_SECTION - oris r3,r3,MSR_VSX@h -END_FTR_SECTION_IFSET(CPU_FTR_VSX) -#endif - SYNC - MTMSRD(r3) - isync /* (not necessary for arch 2.02 and later) */ - blr - -/* * Load state from memory into FP registers including FPSCR. * Assumes the caller has enabled FP in the MSR. */ diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1eafceefeac9..9f8444b84dde 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -732,13 +732,15 @@ void restore_tm_state(struct pt_regs *regs) msr_diff = current->thread.ckpt_regs.msr & ~regs->msr; msr_diff &= MSR_FP | MSR_VEC | MSR_VSX; if (msr_diff & MSR_FP) { - fp_enable(); + msr_check_and_set(MSR_FP); load_fp_state(¤t->thread.fp_state); + msr_check_and_clear(MSR_FP); regs->msr |= current->thread.fpexc_mode; } if (msr_diff & MSR_VEC) { - vec_enable(); + msr_check_and_set(MSR_VEC); load_vr_state(¤t->thread.vr_state); + msr_check_and_clear(MSR_VEC); } regs->msr |= msr_diff; } diff --git a/arch/powerpc/kernel/vector.S b/arch/powerpc/kernel/vector.S index 98675b08efe2..162d0f714941 100644 --- a/arch/powerpc/kernel/vector.S +++ b/arch/powerpc/kernel/vector.S @@ -33,16 +33,6 @@ _GLOBAL(do_load_up_transact_altivec) #endif /* - * Enable use of VMX/Altivec for the caller. - */ -_GLOBAL(vec_enable) - mfmsr r3 - oris r3,r3,MSR_VEC@h - MTMSRD(r3) - isync - blr - -/* * Load state from memory into VMX registers including VSCR. * Assumes the caller has enabled VMX in the MSR. */ |