-#if __s390__
-/* child_stack, clone_flags, parent_tidptr, child_tidptr */
+/*
+ * Parameters of the sys_clone syscall are
+ * clone_flags, child_stack, parent_tidptr, child_tidptr
+ * on all architectures except s390 and s390x
+ * s390* have child_stack, clone_flags, parent_tidptr, child_tidptr
+ */
+#if defined(__s390__) || defined(__s390x__)