diff options
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 6bcf82bed610..0cb627662ded 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -205,6 +205,25 @@ EXPORT_SYMBOL_GPL(flush_altivec_to_thread); #endif /* CONFIG_ALTIVEC */ #ifdef CONFIG_VSX +void giveup_vsx(struct task_struct *tsk) +{ + u64 oldmsr = mfmsr(); + u64 newmsr; + + check_if_tm_restore_required(tsk); + + newmsr = oldmsr | (MSR_FP|MSR_VEC|MSR_VSX); + if (oldmsr != newmsr) + mtmsr_isync(newmsr); + + if (tsk->thread.regs->msr & MSR_FP) + __giveup_fpu(tsk); + if (tsk->thread.regs->msr & MSR_VEC) + __giveup_altivec(tsk); + __giveup_vsx(tsk); +} +EXPORT_SYMBOL(giveup_vsx); + void enable_kernel_vsx(void) { WARN_ON(preemptible()); @@ -220,15 +239,6 @@ void enable_kernel_vsx(void) } EXPORT_SYMBOL(enable_kernel_vsx); -void giveup_vsx(struct task_struct *tsk) -{ - check_if_tm_restore_required(tsk); - giveup_fpu(tsk); - giveup_altivec(tsk); - __giveup_vsx(tsk); -} -EXPORT_SYMBOL(giveup_vsx); - void flush_vsx_to_thread(struct task_struct *tsk) { if (tsk->thread.regs) { |