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| author | Ram Pai <linuxram@us.ibm.com> | 2018-01-18 17:50:39 -0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-20 22:59:04 +1100 |
| commit | 1137573acfe4c67cdd265bbfbd2d66ebe87d6325 (patch) | |
| tree | b1607abe00f500dd4efa56371eb659adb1bf2b68 /arch/powerpc/include/asm/mmu_context.h | |
| parent | bca7aacfe8be121ecefb3be609420220b0820c2c (diff) | |
| download | lwn-1137573acfe4c67cdd265bbfbd2d66ebe87d6325.tar.gz lwn-1137573acfe4c67cdd265bbfbd2d66ebe87d6325.zip | |
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 <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 5 |
1 files changed, 4 insertions, 1 deletions
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) |