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-rw-r--r--include/asm-generic/pgtable.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 25b793325b09..976f749099ef 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -805,4 +805,16 @@ static inline int pmd_free_pte_page(pmd_t *pmd)
#define io_remap_pfn_range remap_pfn_range
#endif
+#ifndef __HAVE_ARCH_PFN_MODIFY_ALLOWED
+static inline bool pfn_modify_allowed(unsigned long pfn, pgprot_t prot)
+{
+ return true;
+}
+
+static inline bool arch_has_pfn_modify_check(void)
+{
+ return false;
+}
+#endif
+
#endif /* _ASM_GENERIC_PGTABLE_H */