From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 9D689A0C4B; Tue, 13 Jul 2021 03:18:50 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 53E7F40DDE; Tue, 13 Jul 2021 03:18:50 +0200 (CEST) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by mails.dpdk.org (Postfix) with ESMTP id 49A454069D for ; Tue, 13 Jul 2021 03:18:48 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10043"; a="208260577" X-IronPort-AV: E=Sophos;i="5.84,235,1620716400"; d="scan'208";a="208260577" Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jul 2021 18:18:47 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,235,1620716400"; d="scan'208";a="569774107" Received: from npg_dpdk_virtio_jiayuhu_07.sh.intel.com ([10.67.119.25]) by fmsmga001.fm.intel.com with ESMTP; 12 Jul 2021 18:18:45 -0700 From: Jiayu Hu To: dev@dpdk.org Cc: maxime.coquelin@redhat.com, chenbo.xia@intel.com, Jiayu Hu Date: Tue, 13 Jul 2021 03:46:20 -0400 Message-Id: <1626162383-89674-1-git-send-email-jiayu.hu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625823790-91995-2-git-send-email-jiayu.hu@intel.com> References: <1625823790-91995-2-git-send-email-jiayu.hu@intel.com> Subject: [dpdk-dev] [PATCH v4 0/3] provide thread unsafe async registration functions X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 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" Lock protection is needed during the vhost notifies the application of device readiness, so the first patch adds lock protection. In addition, the second patch reworks async feature structure to improve readability. After performing locking, existed async vhost registration functions will cause deadlock, as they acquire lock too. The last patch provides thread unsafe registration functions to support calling within vhost callback functions. v4: * remove brace {} in single statement block v3: * rename and use enum to define async device features * change padding fields to 8 bytes v2: * rework async feature structure * fix typo in commit log Jiayu Hu (3): vhost: fix lock on device readiness notification vhost: rework async configuration struct vhost: add thread unsafe async registeration functions doc/guides/prog_guide/vhost_lib.rst | 31 +++++-- examples/vhost/main.c | 8 +- lib/vhost/rte_vhost_async.h | 74 ++++++++++++----- lib/vhost/version.map | 4 + lib/vhost/vhost.c | 157 ++++++++++++++++++++++++++---------- lib/vhost/vhost_user.c | 5 +- 6 files changed, 205 insertions(+), 74 deletions(-) -- 2.7.4