The patch titled
Subject: arm/mm: provide pmdp_establish() helper
has been added to the -mm tree. Its filename is
arm-mm-provide-pmdp_establish-helper.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/arm-mm-provide-pmdp_establish-helper.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/arm-mm-provide-pmdp_establish-helper.patch
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------------------------------------------------------
From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: arm/mm: provide pmdp_establish() helper
ARM LPAE doesn't have hardware dirty/accessed bits.
generic_pmdp_establish() is the right implementation of pmdp_establish for
this case.
Link: http://lkml.kernel.org/r/20171213105756.69879-4-kirill.shutemov@xxxxxxxxxxxxxxx
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/include/asm/pgtable-3level.h | 3 +++
1 file changed, 3 insertions(+)
diff -puN arch/arm/include/asm/pgtable-3level.h~arm-mm-provide-pmdp_establish-helper arch/arm/include/asm/pgtable-3level.h
--- a/arch/arm/include/asm/pgtable-3level.h~arm-mm-provide-pmdp_establish-helper
+++ a/arch/arm/include/asm/pgtable-3level.h
@@ -249,6 +249,9 @@ PMD_BIT_FUNC(mkyoung, |= PMD_SECT_AF);
#define pfn_pmd(pfn,prot) (__pmd(((phys_addr_t)(pfn) << PAGE_SHIFT) | pgprot_val(prot)))
#define mk_pmd(page,prot) pfn_pmd(page_to_pfn(page),prot)
+/* No hardware dirty/accessed bits -- generic_pmdp_establish() fits */
+#define pmdp_establish generic_pmdp_establish
+
/* represent a notpresent pmd by faulting entry, this is used by pmdp_invalidate */
static inline pmd_t pmd_mknotpresent(pmd_t pmd)
{
_
Patches currently in -mm which might be from kirill.shutemov@xxxxxxxxxxxxxxx are
asm-generic-provide-generic_pmdp_establish.patch
arc-use-generic_pmdp_establish-as-pmdp_establish.patch
arm-mm-provide-pmdp_establish-helper.patch
mips-use-generic_pmdp_establish-as-pmdp_establish.patch
x86-mm-provide-pmdp_establish-helper.patch
mm-do-not-lose-dirty-and-access-bits-in-pmdp_invalidate.patch
mm-use-updated-pmdp_invalidate-interface-to-track-dirty-accessed-bits.patch
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