This is a note to let you know that I've just added the patch titled
arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-implement-pmdp_set_access_flags-for-hardware-af-dbm.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 282aa7051b0169991b34716f0f22d9c2f59c46c4 Mon Sep 17 00:00:00 2001
From: Catalin Marinas <catalin.marinas@xxxxxxx>
Date: Thu, 5 May 2016 10:44:00 +0100
Subject: arm64: Implement pmdp_set_access_flags() for hardware AF/DBM
From: Catalin Marinas <catalin.marinas@xxxxxxx>
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@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/include/asm/pgtable.h | 10 ++++++++++
1 file changed, 10 insertions(+)
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -543,6 +543,16 @@ extern int ptep_set_access_flags(struct
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.
*/
Patches currently in stable-queue which might be from catalin.marinas@xxxxxxx are
queue-4.4/arm64-fix-typo-in-the-pmdp_huge_get_and_clear-definition.patch
queue-4.4/arm64-implement-ptep_set_access_flags-for-hardware-af-dbm.patch
queue-4.4/arm64-implement-pmdp_set_access_flags-for-hardware-af-dbm.patch
queue-4.4/arm64-ensure-pmd_present-returns-false-after-pmd_mknotpresent.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html