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GET /api/patches/108264/?format=api
{ "id": 108264, "url": "http://patches.dpdk.org/api/patches/108264/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/patch/20220224132820.1939650-3-xuemingl@nvidia.com/", "project": { "id": 1, "url": "http://patches.dpdk.org/api/projects/1/?format=api", "name": "DPDK", "link_name": "dpdk", "list_id": "dev.dpdk.org", "list_email": "dev@dpdk.org", "web_url": "http://core.dpdk.org", "scm_url": "git://dpdk.org/dpdk", "webscm_url": "http://git.dpdk.org/dpdk", "list_archive_url": "https://inbox.dpdk.org/dev", "list_archive_url_format": "https://inbox.dpdk.org/dev/{}", "commit_url_format": "" }, "msgid": "<20220224132820.1939650-3-xuemingl@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20220224132820.1939650-3-xuemingl@nvidia.com", "date": "2022-02-24T13:28:15", "name": "[2/7] vdpa/mlx5: fix dead loop when process interrupted", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "1e33bdb283a6ad7c956fcfeacf959fc3ed68ef14", "submitter": { "id": 1904, "url": "http://patches.dpdk.org/api/people/1904/?format=api", "name": "Xueming Li", "email": "xuemingl@nvidia.com" }, "delegate": { "id": 2642, "url": "http://patches.dpdk.org/api/users/2642/?format=api", "username": "mcoquelin", "first_name": "Maxime", "last_name": "Coquelin", "email": "maxime.coquelin@redhat.com" }, "mbox": "http://patches.dpdk.org/project/dpdk/patch/20220224132820.1939650-3-xuemingl@nvidia.com/mbox/", "series": [ { "id": 21862, "url": "http://patches.dpdk.org/api/series/21862/?format=api", "web_url": "http://patches.dpdk.org/project/dpdk/list/?series=21862", "date": "2022-02-24T13:28:13", "name": "vdpa/mlx5: improve device shutdown time", "version": 1, "mbox": "http://patches.dpdk.org/series/21862/mbox/" } ], "comments": "http://patches.dpdk.org/api/patches/108264/comments/", "check": "success", "checks": "http://patches.dpdk.org/api/patches/108264/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<dev-bounces@dpdk.org>", "X-Original-To": "patchwork@inbox.dpdk.org", "Delivered-To": "patchwork@inbox.dpdk.org", "Received": [ "from mails.dpdk.org (mails.dpdk.org [217.70.189.124])\n\tby inbox.dpdk.org (Postfix) with ESMTP id C164EA034E;\n\tThu, 24 Feb 2022 14:29:12 +0100 (CET)", "from [217.70.189.124] (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 44599426ED;\n\tThu, 24 Feb 2022 14:29:12 +0100 (CET)", "from NAM10-BN7-obe.outbound.protection.outlook.com\n (mail-bn7nam10on2068.outbound.protection.outlook.com [40.107.92.68])\n by mails.dpdk.org (Postfix) with ESMTP id 0A6144114D;\n Thu, 24 Feb 2022 14:29:11 +0100 (CET)", "from DM6PR06CA0018.namprd06.prod.outlook.com (2603:10b6:5:120::31)\n by BYAPR12MB2888.namprd12.prod.outlook.com (2603:10b6:a03:137::24) with\n Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4995.24; 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helo=mail.nvidia.com;", "From": "Xueming Li <xuemingl@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "<xuemingl@nvidia.com>, <stable@dpdk.org>, Matan Azrad <matan@nvidia.com>,\n Viacheslav Ovsiienko <viacheslavo@nvidia.com>, Maxime Coquelin\n <maxime.coquelin@redhat.com>", "Subject": "[PATCH 2/7] vdpa/mlx5: fix dead loop when process interrupted", "Date": "Thu, 24 Feb 2022 21:28:15 +0800", "Message-ID": "<20220224132820.1939650-3-xuemingl@nvidia.com>", "X-Mailer": "git-send-email 2.35.1", "In-Reply-To": "<20220224132820.1939650-1-xuemingl@nvidia.com>", "References": "<20220224132820.1939650-1-xuemingl@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-Originating-IP": "[10.126.231.35]", "X-ClientProxiedBy": "rnnvmail203.nvidia.com (10.129.68.9) To\n rnnvmail201.nvidia.com (10.129.68.8)", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-Office365-Filtering-Correlation-Id": "c29ab306-cc67-483d-cdda-08d9f799a1bd", "X-MS-TrafficTypeDiagnostic": "BYAPR12MB2888:EE_", "X-Microsoft-Antispam-PRVS": "\n <BYAPR12MB2888EAC204A5A6F92BB4F89FA13D9@BYAPR12MB2888.namprd12.prod.outlook.com>", "X-MS-Exchange-SenderADCheck": "1", "X-MS-Exchange-AntiSpam-Relay": "0", "X-Microsoft-Antispam": "BCL:0;", "X-Microsoft-Antispam-Message-Info": "\n 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", "X-Forefront-Antispam-Report": "CIP:12.22.5.235; CTRY:US; LANG:en; SCL:1; SRV:;\n IPV:CAL; SFV:NSPM; H:mail.nvidia.com; PTR:InfoNoRecords; CAT:NONE;\n SFS:(13230001)(4636009)(46966006)(40470700004)(36840700001)(2906002)(2616005)(4326008)(8936002)(70586007)(70206006)(81166007)(1076003)(54906003)(6916009)(26005)(356005)(8676002)(186003)(36756003)(5660300002)(316002)(40460700003)(36860700001)(55016003)(7696005)(83380400001)(336012)(6666004)(16526019)(86362001)(47076005)(6286002)(508600001)(426003)(82310400004)(36900700001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "24 Feb 2022 13:29:06.4013 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n c29ab306-cc67-483d-cdda-08d9f799a1bd", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[12.22.5.235];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n DM6NAM11FT051.eop-nam11.prod.protection.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "BYAPR12MB2888", "X-BeenThere": "dev@dpdk.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "DPDK patches and discussions <dev.dpdk.org>", "List-Unsubscribe": "<https://mails.dpdk.org/options/dev>,\n <mailto:dev-request@dpdk.org?subject=unsubscribe>", "List-Archive": "<http://mails.dpdk.org/archives/dev/>", "List-Post": "<mailto:dev@dpdk.org>", "List-Help": "<mailto:dev-request@dpdk.org?subject=help>", "List-Subscribe": "<https://mails.dpdk.org/listinfo/dev>,\n <mailto:dev-request@dpdk.org?subject=subscribe>", "Errors-To": "dev-bounces@dpdk.org" }, "content": "In Ctrl+C handling, sometimes kick handling thread gets endless EGAIN\nerror and fall into dead lock.\n\nKick happens frequently in real system due to busy traffic or retry\nmechanism. This patch simplifies kick firmware anyway and skip setting\nhardware notifier due to potential device error, notifier could be set\nin next successful kick request.\n\nFixes: 62c813706e41 (\"vdpa/mlx5: map doorbell\")\nCc: stable@dpdk.org\n\nSigned-off-by: Xueming Li <xuemingl@nvidia.com>\n---\n drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 8 +++++---\n 1 file changed, 5 insertions(+), 3 deletions(-)", "diff": "diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c\nindex de324506cb9..e1e05924a40 100644\n--- a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c\n+++ b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c\n@@ -23,11 +23,11 @@ mlx5_vdpa_virtq_kick_handler(void *cb_arg)\n \tstruct mlx5_vdpa_priv *priv = virtq->priv;\n \tuint64_t buf;\n \tint nbytes;\n+\tint retry;\n \n \tif (rte_intr_fd_get(virtq->intr_handle) < 0)\n \t\treturn;\n-\n-\tdo {\n+\tfor (retry = 0; retry < 3; ++retry) {\n \t\tnbytes = read(rte_intr_fd_get(virtq->intr_handle), &buf,\n \t\t\t 8);\n \t\tif (nbytes < 0) {\n@@ -39,7 +39,9 @@ mlx5_vdpa_virtq_kick_handler(void *cb_arg)\n \t\t\t\tvirtq->index, strerror(errno));\n \t\t}\n \t\tbreak;\n-\t} while (1);\n+\t}\n+\tif (nbytes < 0)\n+\t\treturn;\n \trte_write32(virtq->index, priv->virtq_db_addr);\n \tif (virtq->notifier_state == MLX5_VDPA_NOTIFIER_STATE_DISABLED) {\n \t\tif (rte_vhost_host_notifier_ctrl(priv->vid, virtq->index, true))\n", "prefixes": [ "2/7" ] }