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x86/pkeys: Move vma_pkey() into asm/pkeys.h

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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>
This commit is contained in:
Michael Ellerman 2018-04-12 23:54:00 +10:00
parent dbec10e58d
commit 555934a71b
3 changed files with 9 additions and 11 deletions
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10
arch/x86/include/asm/mmu_context.h
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@ -288,16 +288,6 @@ static inline void arch_unmap(struct mm_struct *mm, struct vm_area_struct *vma,
mpx_notify_unmap(mm, vma, start, end);
}
#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
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
/*
* We only want to enforce protection keys on the current process
* because we effectively have no access to PKRU for other

8
arch/x86/include/asm/pkeys.h
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@ -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 */

2
include/linux/pkeys.h
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@ -2,7 +2,7 @@
#ifndef _LINUX_PKEYS_H
#define _LINUX_PKEYS_H
#include <linux/mm_types.h>
#include <linux/mm.h>
#ifdef CONFIG_ARCH_HAS_PKEYS
#include <asm/pkeys.h>