From 1137573acfe4c67cdd265bbfbd2d66ebe87d6325 Mon Sep 17 00:00:00 2001 From: Ram Pai Date: Thu, 18 Jan 2018 17:50:39 -0800 Subject: powerpc: implementation for arch_vma_access_permitted() This patch provides the implementation for arch_vma_access_permitted(). Returns true if the requested access is allowed by pkey associated with the vma. Signed-off-by: Ram Pai Signed-off-by: Michael Ellerman --- arch/powerpc/include/asm/mmu_context.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'arch/powerpc/include') diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 209f12705fbb..cd2bd739c0df 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -186,6 +186,10 @@ static inline void arch_bprm_mm_init(struct mm_struct *mm, { } +#ifdef CONFIG_PPC_MEM_KEYS +bool arch_vma_access_permitted(struct vm_area_struct *vma, bool write, + bool execute, bool foreign); +#else /* CONFIG_PPC_MEM_KEYS */ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma, bool write, bool execute, bool foreign) { @@ -193,7 +197,6 @@ static inline bool arch_vma_access_permitted(struct vm_area_struct *vma, return true; } -#ifndef CONFIG_PPC_MEM_KEYS #define pkey_mm_init(mm) #define thread_pkey_regs_save(thread) #define thread_pkey_regs_restore(new_thread, old_thread) -- cgit v1.2.3