if (guest) {
RTE_LOG(ERR, XENHOST, " %s: return newly created guest with %d rings\n", __func__, guest->vring_num);
TAILQ_INSERT_TAIL(&guest_root, guest, next);
if (guest) {
RTE_LOG(ERR, XENHOST, " %s: return newly created guest with %d rings\n", __func__, guest->vring_num);
TAILQ_INSERT_TAIL(&guest_root, guest, next);