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[v10,09/22] sparc: mm: Add p?d_leaf() definitions

Message ID 20190731154603.41797-10-steven.price@arm.com (mailing list archive)
State New, archived
Headers show
Series Generic page walk and ptdump | expand

Commit Message

Steven Price July 31, 2019, 3:45 p.m. UTC
walk_page_range() is going to be allowed to walk page tables other than
those of user space. For this it needs to know when it has reached a
'leaf' entry in the page tables. This information is provided by the
p?d_leaf() functions/macros.

For sparc 64 bit, pmd_large() and pud_large() are already provided, so
add macros to provide the p?d_leaf names required by the generic code.

CC: "David S. Miller" <davem@davemloft.net>
CC: sparclinux@vger.kernel.org
Signed-off-by: Steven Price <steven.price@arm.com>
 arch/sparc/include/asm/pgtable_64.h | 2 ++
 1 file changed, 2 insertions(+)
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diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h
index 1599de730532..a78b968ae3fa 100644
--- a/arch/sparc/include/asm/pgtable_64.h
+++ b/arch/sparc/include/asm/pgtable_64.h
@@ -683,6 +683,7 @@  static inline unsigned long pte_special(pte_t pte)
 	return pte_val(pte) & _PAGE_SPECIAL;
+#define pmd_leaf	pmd_large
 static inline unsigned long pmd_large(pmd_t pmd)
 	pte_t pte = __pte(pmd_val(pmd));
@@ -867,6 +868,7 @@  static inline unsigned long pud_page_vaddr(pud_t pud)
 /* only used by the stubbed out hugetlb gup code, should never be called */
 #define pgd_page(pgd)			NULL
+#define pud_leaf	pud_large
 static inline unsigned long pud_large(pud_t pud)
 	pte_t pte = __pte(pud_val(pud));