diff options
| author | Catalin Marinas <catalin.marinas@arm.com> | 2016-05-05 10:44:00 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-06-01 12:17:57 -0700 |
| commit | b987714532522c6507e1b01a0ffdbf5649fdd64a (patch) | |
| tree | 08a008f7acc5204168ee1208519fb879eb97221b | |
| parent | 433dcefb09dea5ca0a419b383d3756052647ac43 (diff) | |
| download | lwn-b987714532522c6507e1b01a0ffdbf5649fdd64a.tar.gz lwn-b987714532522c6507e1b01a0ffdbf5649fdd64a.zip | |
arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
commit 282aa7051b0169991b34716f0f22d9c2f59c46c4 upstream.
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")
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 b0947b4899b8..44430ce5819e 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -531,6 +531,16 @@ 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. */ |