diff -r aef8a58ff2af xen/arch/ia64/xen/process.c
@@ -660,6 +675,9 @@
 		else do_ssc(vcpu_get_gr(current,36), regs);
 	}
 	else if (iim == d->arch.breakimm) {
+		/* By default, do not continue.  */
+		v->arch.hypercall_continuation = 0;
+
 		if (ia64_hypercall(regs) &&
 		    !PSCBX(v, hypercall_continuation))
 			vcpu_increment_iip(current);