diff -r f9ffc95fbd42 xen/arch/ia64/xen/hyperprivop.S
--- a/xen/arch/ia64/xen/hyperprivop.S	Mon Apr 24 05:55:06 2006
+++ b/xen/arch/ia64/xen/hyperprivop.S	Mon Apr 24 13:06:10 2006
@@ -2076,7 +2076,6 @@
 (p6)	itc.d r22;;
 (p7)	itc.i r22;;
 	dv_serialize_data
-	// FIXME: how do I make assembler warnings go away here?
 	// vhpt_insert(r23=vaddr,r22=pte,r24=logps<<2)
 	thash r28=r23
 	or r26=1,r22;;
diff -r f9ffc95fbd42 xen/include/asm-ia64/config.h
--- a/xen/include/asm-ia64/config.h	Mon Apr 24 05:55:06 2006
+++ b/xen/include/asm-ia64/config.h	Mon Apr 24 13:06:10 2006
@@ -283,4 +283,8 @@
 #define FORCE_CRASH	break.m 0;;
 #endif
 
+/* Allow .serialize.data/instruction in asm files.
+   Old as doesn't handle this.  */
+#define HAVE_SERIALIZE_DIRECTIVE
+
 #endif	/* _IA64_CONFIG_H_ */