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-rw-r--r--include/asm-generic/pgtable.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 4d46085c1b90..39f1d6a2b04d 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -6,6 +6,12 @@
#include <linux/mm_types.h>
#include <linux/bug.h>
+#include <linux/errno.h>
+
+#if 4 - defined(__PAGETABLE_PUD_FOLDED) - defined(__PAGETABLE_PMD_FOLDED) != \
+ CONFIG_PGTABLE_LEVELS
+#error CONFIG_PGTABLE_LEVELS is not consistent with __PAGETABLE_{PUD,PMD}_FOLDED
+#endif
/*
* On almost all architectures and configurations, 0 can be used as the
@@ -691,6 +697,30 @@ static inline int pmd_protnone(pmd_t pmd)
#endif /* CONFIG_MMU */
+#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP
+int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot);
+int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot);
+int pud_clear_huge(pud_t *pud);
+int pmd_clear_huge(pmd_t *pmd);
+#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */
+static inline int pud_set_huge(pud_t *pud, phys_addr_t addr, pgprot_t prot)
+{
+ return 0;
+}
+static inline int pmd_set_huge(pmd_t *pmd, phys_addr_t addr, pgprot_t prot)
+{
+ return 0;
+}
+static inline int pud_clear_huge(pud_t *pud)
+{
+ return 0;
+}
+static inline int pmd_clear_huge(pmd_t *pmd)
+{
+ return 0;
+}
+#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */
+
#endif /* !__ASSEMBLY__ */
#ifndef io_remap_pfn_range