Index: kernel/arch/ia64/include/arch/barrier.h
===================================================================
--- kernel/arch/ia64/include/arch/barrier.h	(revision af9dd1ed6f5d79cc098da33ff7131162b1c177a4)
+++ kernel/arch/ia64/include/arch/barrier.h	(revision 4b0206c7b08dfc91e29744cd62ce245f29ac2b62)
@@ -56,4 +56,6 @@
 	asm volatile (";; sync.i\n" ::: "memory")
 
+#ifdef KERNEL
+
 #define smc_coherence(a)	\
 {				\
@@ -73,4 +75,6 @@
 }
 
+#endif	/* KERNEL */
+
 #endif