diff options
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
-rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 58 |
1 files changed, 9 insertions, 49 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index da7e9432fa8f..309592589e30 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -45,7 +45,7 @@ extern void set_context(unsigned long id, pgd_t *pgd); #ifdef CONFIG_PPC_BOOK3S_64 extern void radix__switch_mmu_context(struct mm_struct *prev, - struct mm_struct *next); + struct mm_struct *next); static inline void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) @@ -67,54 +67,18 @@ extern void __destroy_context(unsigned long context_id); extern void mmu_context_init(void); #endif +#if defined(CONFIG_KVM_BOOK3S_HV_POSSIBLE) && defined(CONFIG_PPC_RADIX_MMU) +extern void radix_kvm_prefetch_workaround(struct mm_struct *mm); +#else +static inline void radix_kvm_prefetch_workaround(struct mm_struct *mm) { } +#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/core.c - */ -static inline void switch_mm_irqs_off(struct mm_struct *prev, - struct mm_struct *next, - struct task_struct *tsk) -{ - /* Mark this context has been used on the new CPU */ - if (!cpumask_test_cpu(smp_processor_id(), mm_cpumask(next))) - cpumask_set_cpu(smp_processor_id(), mm_cpumask(next)); - - /* 32-bit keeps track of the current PGDIR in the thread struct */ -#ifdef CONFIG_PPC32 - tsk->thread.pgdir = next->pgd; -#endif /* CONFIG_PPC32 */ - - /* 64-bit Book3E keeps track of current PGD in the PACA */ -#ifdef CONFIG_PPC_BOOK3E_64 - get_paca()->pgd = next->pgd; -#endif - /* Nothing else to do if we aren't actually switching */ - 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 - */ -#ifdef CONFIG_ALTIVEC - if (cpu_has_feature(CPU_FTR_ALTIVEC)) - asm volatile ("dssall"); -#endif /* CONFIG_ALTIVEC */ - /* - * The actual HW switching method differs between the various - * sub architectures. Out of line for now - */ - switch_mmu_context(prev, next, tsk); -} +extern void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk); static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) @@ -136,11 +100,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, */ static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next) { - unsigned long flags; - - local_irq_save(flags); switch_mm(prev, next, current); - local_irq_restore(flags); } /* We don't currently use enter_lazy_tlb() for anything */ |