Index: sys/xen/xen_intr.c
===================================================================
--- sys/xen/xen_intr.c
+++ sys/xen/xen_intr.c
@@ -668,6 +668,7 @@
 }
 
 /*--------------------------- Common PIC Functions ---------------------------*/
+#if defined(__amd64__) || defined(__i386__)
 /**
  * Prepare this PIC for system suspension.
  */
@@ -801,6 +802,7 @@
 		} while (cur != NULL);
 	}
 }
+#endif
 
 /**
  * Disable a Xen interrupt source.