On Sun, Jan 07, 2018 at 04:05:12AM -0800, Xiao Wang wrote:

+	/*
+	 * App management thread and virtio interrupt handler thread
+	 * both can change the 'started' flag, this lock is meant to
+	 * avoid such a contention.
+	 */
+	rte_spinlock_t state_lock;

Why not turning the "started" to atomic type, so that you don't need
the lock?

	--yliu

+	struct rte_mbuf **inject_pkts;
 
 	struct virtqueue **vqs;
 };