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| author | Michael Ellerman <mpe@ellerman.id.au> | 2018-04-12 15:54:00 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-05-09 03:51:00 +0200 |
| commit | 555934a71bb479ce109722807b374f2d98aefe89 (patch) | |
| tree | e0624d2e95c8814200fbfabbaecfc5181f65c5ea /arch/x86/include/asm/pkeys.h | |
| parent | mm/pkeys, powerpc, x86: Provide an empty vma_pkey() in linux/pkeys.h (diff) | |
| download | linux-555934a71bb479ce109722807b374f2d98aefe89.tar.xz linux-555934a71bb479ce109722807b374f2d98aefe89.zip | |
x86/pkeys: Move vma_pkey() into asm/pkeys.h
Move the last remaining pkey helper, vma_pkey() into asm/pkeys.h
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Diffstat (limited to 'arch/x86/include/asm/pkeys.h')
| -rw-r--r-- | arch/x86/include/asm/pkeys.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/include/asm/pkeys.h b/arch/x86/include/asm/pkeys.h index a0ba1ffda0df..0e5f749158e4 100644 --- a/arch/x86/include/asm/pkeys.h +++ b/arch/x86/include/asm/pkeys.h @@ -106,4 +106,12 @@ extern int __arch_set_user_pkey_access(struct task_struct *tsk, int pkey, unsigned long init_val); extern void copy_init_pkru_to_fpregs(void); +static inline int vma_pkey(struct vm_area_struct *vma) +{ + unsigned long vma_pkey_mask = VM_PKEY_BIT0 | VM_PKEY_BIT1 | + VM_PKEY_BIT2 | VM_PKEY_BIT3; + + return (vma->vm_flags & vma_pkey_mask) >> VM_PKEY_SHIFT; +} + #endif /*_ASM_X86_PKEYS_H */ |