(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
+/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
+#define list_add_tail(a, b) do {} while (0)
+#define list_del(a) do {} while (0)
+#define list_for_each_entry(a, b, c) while (0)
+/* end of stubs */
+
#endif /* KERNEL_H */