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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 b081794ba135..a75cb371cd19 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -1083,6 +1083,18 @@ int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
static inline void init_espfix_bsp(void) { }
#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 /* !_HAVE_ARCH_PFN_MODIFY_ALLOWED */
+
#endif /* !__ASSEMBLY__ */
#ifndef io_remap_pfn_range