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| author | Catalin Marinas <catalin.marinas@arm.com> | 2016-05-05 12:44:00 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-05-06 14:46:53 +0300 |
| commit | 282aa7051b0169991b34716f0f22d9c2f59c46c4 (patch) | |
| tree | da65f6f3769496314d842b1ff36b07f0b9ba2c1b /arch/arm64 | |
| parent | 911f56eeb87ee378f5e215469268a7a2f68a5a8a (diff) | |
| download | linux-282aa7051b0169991b34716f0f22d9c2f59c46c4.tar.xz | |
arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
The update to the accessed or dirty states for block mappings must be
done atomically on hardware with support for automatic AF/DBM. The
ptep_set_access_flags() function has been fixed as part of commit
66dbd6e61a52 ("arm64: Implement ptep_set_access_flags() for hardware
AF/DBM"). This patch brings pmdp_set_access_flags() in line with the pte
counterpart.
Fixes: 2f4b829c625e ("arm64: Add support for hardware updates of the access and dirty pte bits")
Cc: <stable@vger.kernel.org> # 4.4.x: 66dbd6e61a52: arm64: Implement ptep_set_access_flags() for hardware AF/DBM
Cc: <stable@vger.kernel.org> # 4.3+
Reviewed-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/pgtable.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index b0ad16f05bcc..072c335d4786 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -540,6 +540,16 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, pte_t *ptep, pte_t entry, int dirty); +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS +static inline int pmdp_set_access_flags(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp, + pmd_t entry, int dirty) +{ + return ptep_set_access_flags(vma, address, (pte_t *)pmdp, pmd_pte(entry), dirty); +} +#endif + /* * Atomic pte/pmd modifications. */ |