diff --git a/include/asm-powerpc/page_32.h b/include/asm-powerpc/page_32.h
index 3522130..7259cfd 100644
--- a/include/asm-powerpc/page_32.h
+++ b/include/asm-powerpc/page_32.h
@@ -3,6 +3,8 @@
 
 #define VM_DATA_DEFAULT_FLAGS	VM_DATA_DEFAULT_FLAGS32
 
+#define PPC_MEMSTART	0
+
 #ifndef __ASSEMBLY__
 /*
  * The basic type of a PTE - 64 bits for those CPUs with > 32 bit