arm/mm: provide pmdp_establish() helper
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Thu, 1 Feb 2018 00:17:51 +0000 (16:17 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 1 Feb 2018 01:18:37 +0000 (17:18 -0800)
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@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/arm/include/asm/pgtable-3level.h

index 1a7a17b..2a48360 100644 (file)
@@ -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)
 {