diff options
| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 23:26:01 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 18:33:04 +1000 |
| commit | d2adba3fd137b46903dad813e2a4777b96c85e0f (patch) | |
| tree | 42f883e56fd897d308ec1e3620e5d4692425da8e /arch/powerpc/include | |
| parent | d9225ad923514252ec8d10dac67e5a7a2f0aa345 (diff) | |
powerpc/mm: Abstraction for switch_mmu_context()
How we switch MMU context differs between hash and radix. For hash we
need to switch the SLB details and for radix we need to switch the PID
SPR.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 4eaab40e3ade..4e2a29443384 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -33,16 +33,23 @@ extern long mm_iommu_ua_to_hpa(struct mm_iommu_table_group_mem_t *mem, extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem); extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem); #endif - -extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next); extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm); extern void set_context(unsigned long id, pgd_t *pgd); #ifdef CONFIG_PPC_BOOK3S_64 +static inline void switch_mmu_context(struct mm_struct *prev, + struct mm_struct *next, + struct task_struct *tsk) +{ + return switch_slb(tsk, next); +} + extern int __init_new_context(void); extern void __destroy_context(int context_id); static inline void mmu_context_init(void) { } #else +extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk); extern unsigned long __init_new_context(void); extern void __destroy_context(unsigned long context_id); extern void mmu_context_init(void); @@ -88,17 +95,11 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, if (cpu_has_feature(CPU_FTR_ALTIVEC)) asm volatile ("dssall"); #endif /* CONFIG_ALTIVEC */ - - /* The actual HW switching method differs between the various - * sub architectures. + /* + * The actual HW switching method differs between the various + * sub architectures. Out of line for now */ -#ifdef CONFIG_PPC_STD_MMU_64 - switch_slb(tsk, next); -#else - /* Out of line for now */ - switch_mmu_context(prev, next); -#endif - + switch_mmu_context(prev, next, tsk); } #define deactivate_mm(tsk,mm) do { } while (0) |