[PATCHv4 03/12] arm/mm: Provide pmdp_establish() helper

From
Kirill A. Shutemov <hidden>
Date
2017-12-13 11:00:17
Also in
linux-arch, lkml
Reply to
Kirill A. Shutemov, 2017-12-13
ARM LPAE doesn't have hardware dirty/accessed bits.

generic_pmdp_establish() is the right implementation of pmdp_establish
for this case.

Signed-off-by: Kirill A. Shutemov <redacted>
Cc: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm/include/asm/pgtable-3level.h | 3 +++
 1 file changed, 3 insertions(+)
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 1a7a17b2a1ba..2a4836087358 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/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)
 {
-- 
2.15.0

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Thread (19 messages) 19 messages, 3 authors, last reply 2017-12-15
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