diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
index 7094944cf..0f9292eb0 100644
--- a/lib/librte_vhost/virtio_net.c
+++ b/lib/librte_vhost/virtio_net.c
@@ -225,6 +225,50 @@ flush_enqueue_used_packed(struct virtio_net *dev,
 	vhost_log_cache_sync(dev, vq);
 }
 
+static __rte_always_inline void
+flush_dequeue_shadow_used_packed(struct virtio_net *dev,
+			struct vhost_virtqueue *vq)
+{
+	int i;
+	uint16_t used_idx;
+	uint16_t head_idx = vq->dequeue_shadow_head;
+	uint16_t head_flags;
+	uint16_t flags;
+
+	if (vq->shadow_used_packed[0].used_wrap_counter)
+		head_flags = VIRTIO_TX_FLAG_PACKED;
+	else
+		head_flags = VIRTIO_TX_WRAP_FLAG_PACKED;
+
+	if (vq->shadow_used_packed[0].len)
+		head_flags |= VRING_DESC_F_WRITE;
+
+	for (i = 1; i < vq->shadow_used_idx; i++) {
+		used_idx = vq->shadow_used_packed[i].used_idx;
+		if (vq->shadow_used_packed[i].used_wrap_counter)
+			flags = VIRTIO_TX_FLAG_PACKED;
+		else
+			flags = VIRTIO_TX_WRAP_FLAG_PACKED;
+
+		vq->desc_packed[used_idx].flags = flags;
+		vhost_log_cache_used_vring(dev, vq,
+					used_idx *
+					sizeof(struct vring_packed_desc),
+					sizeof(struct vring_packed_desc));
+	}
+
+	rte_smp_wmb();
+	vq->desc_packed[head_idx].flags = head_flags;
+
+	vhost_log_cache_used_vring(dev, vq,
+				head_idx *
+				sizeof(struct vring_packed_desc),
+				sizeof(struct vring_packed_desc));
+
+	vq->shadow_used_idx = 0;
+	vhost_log_cache_sync(dev, vq);
+}
+
 /* flags are same when flushing used ring in fast path */
 static __rte_always_inline void
 flush_used_fast_packed(struct virtio_net *dev, struct vhost_virtqueue *vq,
@@ -393,6 +437,24 @@ flush_enqueue_shadow_used_packed(struct virtio_net *dev,
 	}
 }
 
+static __rte_always_inline void
+flush_dequeue_shadow_used(struct virtio_net *dev, struct vhost_virtqueue *vq)
+{
+	if (!vq->shadow_used_idx)
+		return;
+
+	int16_t shadow_count = vq->last_used_idx - vq->dequeue_shadow_head;
+	if (shadow_count <= 0)
+		shadow_count += vq->size;
+
+	/* buffer shadow used ring as many as possible when doing dequeue */
+	shadow_count += vq->last_used_idx & 0x3;
+	if ((uint16_t)shadow_count >= (vq->size >> 1)) {
+		do_data_copy_dequeue(vq);
+		flush_dequeue_shadow_used_packed(dev, vq);
+		vhost_vring_call_packed(dev, vq);
+	}
+}
 
 /* avoid write operation when necessary, to lessen cache issues */
 #define ASSIGN_UNLESS_EQUAL(var, val) do {	\
@@ -2027,120 +2089,49 @@ virtio_dev_tx_normal_packed(struct virtio_net *dev, struct vhost_virtqueue *vq,
 
 	return 0;
 }
-
 static __rte_noinline uint16_t
 virtio_dev_tx_packed(struct virtio_net *dev, struct vhost_virtqueue *vq,
-	struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts, uint16_t count)
+		struct rte_mempool *mbuf_pool, struct rte_mbuf **pkts,
+		uint32_t count)
 {
-	uint16_t i;
-
-	if (unlikely(dev->dequeue_zero_copy)) {
-		struct zcopy_mbuf *zmbuf, *next;
-
-		for (zmbuf = TAILQ_FIRST(&vq->zmbuf_list);
-		     zmbuf != NULL; zmbuf = next) {
-			next = TAILQ_NEXT(zmbuf, next);
+	uint32_t pkt_idx = 0;
+	uint32_t pkt_num;
+	uint32_t remained = count;
+	int ret;
 
-			if (mbuf_is_consumed(zmbuf->mbuf)) {
-				update_shadow_used_ring_packed(vq,
-						zmbuf->desc_idx,
-						0,
-						zmbuf->desc_count);
+	for (pkt_idx = 0; remained; pkt_idx += pkt_num, remained -= pkt_num) {
+		if (remained >= PACKED_DESC_PER_CACHELINE) {
+			ret = virtio_dev_tx_fast_packed(dev, vq, mbuf_pool,
+							&pkts[pkt_idx]);
 
-				TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
-				restore_mbuf(zmbuf->mbuf);
-				rte_pktmbuf_free(zmbuf->mbuf);
-				put_zmbuf(zmbuf);
-				vq->nr_zmbuf -= 1;
+			if (!ret) {
+				pkt_num = PACKED_DESC_PER_CACHELINE;
+				flush_dequeue_shadow_used(dev, vq);
+				continue;
 			}
 		}
 
-		if (likely(vq->shadow_used_idx)) {
-			flush_shadow_used_ring_packed(dev, vq);
-			vhost_vring_call_packed(dev, vq);
-		}
-	}
-
-	VHOST_LOG_DEBUG(VHOST_DATA, "(%d) %s\n", dev->vid, __func__);
-
-	count = RTE_MIN(count, MAX_PKT_BURST);
-	VHOST_LOG_DEBUG(VHOST_DATA, "(%d) about to dequeue %u buffers\n",
-			dev->vid, count);
-
-	for (i = 0; i < count; i++) {
-		struct buf_vector buf_vec[BUF_VECTOR_MAX];
-		uint16_t buf_id;
-		uint32_t dummy_len;
-		uint16_t desc_count, nr_vec = 0;
-		int err;
-
-		if (unlikely(fill_vec_buf_packed(dev, vq,
-						vq->last_avail_idx, &desc_count,
-						buf_vec, &nr_vec,
-						&buf_id, &dummy_len,
-						VHOST_ACCESS_RO) < 0))
-			break;
-
-		if (likely(dev->dequeue_zero_copy == 0))
-			update_shadow_used_ring_packed(vq, buf_id, 0,
-					desc_count);
-
-		pkts[i] = rte_pktmbuf_alloc(mbuf_pool);
-		if (unlikely(pkts[i] == NULL)) {
-			RTE_LOG(ERR, VHOST_DATA,
-				"Failed to allocate memory for mbuf.\n");
-			break;
-		}
-
-		err = copy_desc_to_mbuf(dev, vq, buf_vec, nr_vec, pkts[i],
-				mbuf_pool);
-		if (unlikely(err)) {
-			rte_pktmbuf_free(pkts[i]);
+		/* if remained desc not cache aligned, skip to next round */
+		if (((vq->last_avail_idx & 0x3) + remained) <
+			PACKED_DESC_PER_CACHELINE)
 			break;
-		}
 
-		if (unlikely(dev->dequeue_zero_copy)) {
-			struct zcopy_mbuf *zmbuf;
-
-			zmbuf = get_zmbuf(vq);
-			if (!zmbuf) {
-				rte_pktmbuf_free(pkts[i]);
+		if (virtio_dev_tx_normal_packed(dev, vq, mbuf_pool,
+						&pkts[pkt_idx]))
 				break;
-			}
-			zmbuf->mbuf = pkts[i];
-			zmbuf->desc_idx = buf_id;
-			zmbuf->desc_count = desc_count;
-
-			/*
-			 * Pin lock the mbuf; we will check later to see
-			 * whether the mbuf is freed (when we are the last
-			 * user) or not. If that's the case, we then could
-			 * update the used ring safely.
-			 */
-			rte_mbuf_refcnt_update(pkts[i], 1);
 
-			vq->nr_zmbuf += 1;
-			TAILQ_INSERT_TAIL(&vq->zmbuf_list, zmbuf, next);
-		}
-
-		vq->last_avail_idx += desc_count;
-		if (vq->last_avail_idx >= vq->size) {
-			vq->last_avail_idx -= vq->size;
-			vq->avail_wrap_counter ^= 1;
-		}
+		pkt_num = 1;
+		flush_dequeue_shadow_used(dev, vq);
 	}
 
-	if (likely(dev->dequeue_zero_copy == 0)) {
-		do_data_copy_dequeue(vq);
-		if (unlikely(i < count))
-			vq->shadow_used_idx = i;
-		if (likely(vq->shadow_used_idx)) {
-			flush_shadow_used_ring_packed(dev, vq);
-			vhost_vring_call_packed(dev, vq);
-		}
+	if (pkt_idx) {
+		if (vq->shadow_used_idx)
+			do_data_copy_dequeue(vq);
+
+		vhost_vring_call_packed(dev, vq);
 	}
 
-	return i;
+	return pkt_idx;
 }
 
 static __rte_always_inline void
