diff options
Diffstat (limited to 'arch/arm/include/asm/mmu_context.h')
| -rw-r--r-- | arch/arm/include/asm/mmu_context.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h index 84e58956fcab..db2cb06aa8cf 100644 --- a/arch/arm/include/asm/mmu_context.h +++ b/arch/arm/include/asm/mmu_context.h @@ -23,6 +23,16 @@ void __check_vmalloc_seq(struct mm_struct *mm); +#ifdef CONFIG_MMU +static inline void check_vmalloc_seq(struct mm_struct *mm) +{ + if (!IS_ENABLED(CONFIG_ARM_LPAE) && + unlikely(atomic_read(&mm->context.vmalloc_seq) != + atomic_read(&init_mm.context.vmalloc_seq))) + __check_vmalloc_seq(mm); +} +#endif + #ifdef CONFIG_CPU_HAS_ASID void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk); @@ -52,8 +62,7 @@ static inline void a15_erratum_get_cpumask(int this_cpu, struct mm_struct *mm, static inline void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) { - if (unlikely(mm->context.vmalloc_seq != init_mm.context.vmalloc_seq)) - __check_vmalloc_seq(mm); + check_vmalloc_seq(mm); if (irqs_disabled()) /* @@ -129,6 +138,15 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next, #endif } +#ifdef CONFIG_VMAP_STACK +static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) +{ + if (mm != &init_mm) + check_vmalloc_seq(mm); +} +#define enter_lazy_tlb enter_lazy_tlb +#endif + #include <asm-generic/mmu_context.h> #endif |