From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by dpdk.org (Postfix) with ESMTP id D0F9F1BFAD for ; Fri, 6 Jul 2018 09:07:34 +0200 (CEST) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5D99272647; Fri, 6 Jul 2018 07:07:34 +0000 (UTC) Received: from localhost.localdomain (unknown [10.36.112.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id AD3262026D68; Fri, 6 Jul 2018 07:07:32 +0000 (UTC) From: Maxime Coquelin To: tiwei.bie@intel.com, zhihong.wang@intel.com, jfreimann@redhat.com, dev@dpdk.org Cc: mst@redhat.com, jasowang@redhat.com, wexu@redhat.com, Maxime Coquelin Date: Fri, 6 Jul 2018 09:07:11 +0200 Message-Id: <20180706070722.2043-5-maxime.coquelin@redhat.com> In-Reply-To: <20180706070722.2043-1-maxime.coquelin@redhat.com> References: <20180706070722.2043-1-maxime.coquelin@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 06 Jul 2018 07:07:34 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.2]); Fri, 06 Jul 2018 07:07:34 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'maxime.coquelin@redhat.com' RCPT:'' Subject: [dpdk-dev] [PATCH v9 04/15] vhost: clear shadow used table index at flush time X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Jul 2018 07:07:35 -0000 Signed-off-by: Maxime Coquelin --- lib/librte_vhost/virtio_net.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c index 82d5d9e17..d6b30899f 100644 --- a/lib/librte_vhost/virtio_net.c +++ b/lib/librte_vhost/virtio_net.c @@ -115,6 +115,7 @@ flush_shadow_used_ring(struct virtio_net *dev, struct vhost_virtqueue *vq) vhost_log_cache_sync(dev, vq); *(volatile uint16_t *)&vq->used->idx += vq->shadow_used_idx; + vq->shadow_used_idx = 0; vhost_log_used_vring(dev, vq, offsetof(struct vring_used, idx), sizeof(vq->used->idx)); } @@ -567,7 +568,6 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id, rte_prefetch0(&vq->avail->ring[vq->last_avail_idx & (vq->size - 1)]); - vq->shadow_used_idx = 0; avail_head = *((volatile uint16_t *)&vq->avail->idx); for (pkt_idx = 0; pkt_idx < count; pkt_idx++) { uint32_t pkt_len = pkts[pkt_idx]->pkt_len + dev->vhost_hlen; @@ -1055,7 +1055,6 @@ rte_vhost_dequeue_burst(int vid, uint16_t queue_id, goto out_access_unlock; vq->batch_copy_nb_elems = 0; - vq->shadow_used_idx = 0; if (dev->features & (1ULL << VIRTIO_F_IOMMU_PLATFORM)) vhost_user_iotlb_rd_lock(vq); @@ -1086,7 +1085,6 @@ rte_vhost_dequeue_burst(int vid, uint16_t queue_id, flush_shadow_used_ring(dev, vq); vhost_vring_call(dev, vq); - vq->shadow_used_idx = 0; } rte_prefetch0(&vq->avail->ring[vq->last_avail_idx & (vq->size - 1)]); -- 2.14.4