diff options
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 81fb41289d6c..a73668a5f30d 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -32,6 +32,10 @@ extern void __destroy_context(unsigned long context_id); extern void mmu_context_init(void); #endif +extern void switch_cop(struct mm_struct *next); +extern int use_cop(unsigned long acop, struct mm_struct *mm); +extern void drop_cop(unsigned long acop, struct mm_struct *mm); + /* * switch_mm is the entry point called from the architecture independent * code in kernel/sched.c @@ -55,6 +59,12 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, if (prev == next) return; +#ifdef CONFIG_PPC_ICSWX + /* Switch coprocessor context only if prev or next uses a coprocessor */ + if (prev->context.acop || next->context.acop) + switch_cop(next); +#endif /* CONFIG_PPC_ICSWX */ + /* We must stop all altivec streams before changing the HW * context */ @@ -67,7 +77,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, * sub architectures. */ #ifdef CONFIG_PPC_STD_MMU_64 - if (cpu_has_feature(CPU_FTR_SLB)) + if (mmu_has_feature(MMU_FTR_SLB)) switch_slb(tsk, next); else switch_stab(tsk, next); |