From: Rohan McLure <rmcl...@linux.ibm.com>
The page table check feature requires that pud_pfn() be defined
on each consuming architecture. Since only 64-bit, Book3S platforms
allow for hugepages at this upper level, and since the calling code is
gated by a call to pud_user_accessible_page(), which will return zero,
include this stub as a BUILD_BUG().
Signed-off-by: Rohan McLure <rmcl...@linux.ibm.com>
Reviewed-by: Pasha Tatashin <pasha.tatas...@soleen.com>
Signed-off-by: Andrew Donnellan <a...@linux.ibm.com>
---
arch/powerpc/include/asm/pgtable.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/powerpc/include/asm/pgtable.h
b/arch/powerpc/include/asm/pgtable.h
index 2f72ad885332..bb43e4f46367 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -215,6 +215,15 @@ static inline bool arch_supports_memmap_on_memory(unsigned
long vmemmap_size)
#endif /* CONFIG_PPC64 */
+#ifndef pud_pfn
+#define pud_pfn pud_pfn
+static inline int pud_pfn(pud_t pud)
+{
+ BUILD_BUG();
+ return 0;
+}
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_POWERPC_PGTABLE_H */
--
2.48.1
