From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 72A67C433E0 for ; Thu, 25 Jun 2020 13:38:31 +0000 (UTC) Received: from dpdk.org (dpdk.org [92.243.14.124]) by mail.kernel.org (Postfix) with ESMTP id 3442920672 for ; Thu, 25 Jun 2020 13:38:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3442920672 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mellanox.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=dev-bounces@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 476241B75C; Thu, 25 Jun 2020 15:38:29 +0200 (CEST) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 0E1D01B5E1 for ; Thu, 25 Jun 2020 15:38:26 +0200 (CEST) Received: from Internal Mail-Server by MTLPINE1 (envelope-from matan@mellanox.com) with SMTP; 25 Jun 2020 16:38:23 +0300 Received: from pegasus25.mtr.labs.mlnx. (pegasus25.mtr.labs.mlnx [10.210.16.10]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 05PDcK3v009858; Thu, 25 Jun 2020 16:38:23 +0300 From: Matan Azrad To: Maxime Coquelin Cc: dev@dpdk.org, Xiao Wang Date: Thu, 25 Jun 2020 13:38:14 +0000 Message-Id: <1593092298-52257-2-git-send-email-matan@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1593092298-52257-1-git-send-email-matan@mellanox.com> References: <1592497686-433697-1-git-send-email-matan@mellanox.com> <1593092298-52257-1-git-send-email-matan@mellanox.com> Subject: [dpdk-dev] [PATCH v2 1/5] vhost: skip access lock when vDPA is configured 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" No need to take access lock in the vhost-user message handler when vDPA driver controls all the data-path of the vhost device. It allows the vDPA set_vring_state operation callback to configure guest notifications. Signed-off-by: Matan Azrad Reviewed-by: Maxime Coquelin --- lib/librte_vhost/vhost_user.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 4e1af91..8d8050b 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -2690,8 +2690,10 @@ typedef int (*vhost_message_handler_t)(struct virtio_net **pdev, case VHOST_USER_SEND_RARP: case VHOST_USER_NET_SET_MTU: case VHOST_USER_SET_SLAVE_REQ_FD: - vhost_user_lock_all_queue_pairs(dev); - unlock_required = 1; + if (!(dev->flags & VIRTIO_DEV_VDPA_CONFIGURED)) { + vhost_user_lock_all_queue_pairs(dev); + unlock_required = 1; + } break; default: break; -- 1.8.3.1