diff --git a/include/asm-alpha/md.h b/include/asm-alpha/md.h
new file mode 100644
index 0000000..6c9b822
--- /dev/null
+++ b/include/asm-alpha/md.h
@@ -0,0 +1,13 @@
+/* $Id: md.h,v 1.1 1997/12/15 15:11:48 jj Exp $
+ * md.h: High speed xor_block operation for RAID4/5 
+ *
+ */
+ 
+#ifndef __ASM_MD_H
+#define __ASM_MD_H
+
+/* #define HAVE_ARCH_XORBLOCK */
+
+#define MD_XORBLOCK_ALIGNMENT	sizeof(long)
+
+#endif /* __ASM_MD_H */