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GET /api/patches/135050/?format=api
{ "id": 135050, "url": "http://patchwork.dpdk.org/api/patches/135050/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/patch/20231212042517.164353-3-artemyko@nvidia.com/", "project": { "id": 1, "url": "http://patchwork.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": "<20231212042517.164353-3-artemyko@nvidia.com>", "list_archive_url": "https://inbox.dpdk.org/dev/20231212042517.164353-3-artemyko@nvidia.com", "date": "2023-12-12T04:25:13", "name": "[2/5] eal: fix multiprocess hotplug race", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": true, "hash": "9ee0164782f4b798b2d2726595310b873dff1c86", "submitter": { "id": 3172, "url": "http://patchwork.dpdk.org/api/people/3172/?format=api", "name": "Artemy Kovalyov", "email": "artemyko@nvidia.com" }, "delegate": { "id": 1, "url": "http://patchwork.dpdk.org/api/users/1/?format=api", "username": "tmonjalo", "first_name": "Thomas", "last_name": "Monjalon", "email": "thomas@monjalon.net" }, "mbox": "http://patchwork.dpdk.org/project/dpdk/patch/20231212042517.164353-3-artemyko@nvidia.com/mbox/", "series": [ { "id": 30517, "url": "http://patchwork.dpdk.org/api/series/30517/?format=api", "web_url": "http://patchwork.dpdk.org/project/dpdk/list/?series=30517", "date": "2023-12-12T04:25:12", "name": "addressing races in concurrent process startup", "version": 1, "mbox": "http://patchwork.dpdk.org/series/30517/mbox/" } ], "comments": "http://patchwork.dpdk.org/api/patches/135050/comments/", "check": "success", "checks": "http://patchwork.dpdk.org/api/patches/135050/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 6A6FB436CB;\n\tTue, 12 Dec 2023 05:25:47 +0100 (CET)", "from mails.dpdk.org (localhost [127.0.0.1])\n\tby mails.dpdk.org (Postfix) with ESMTP id 047E642DDF;\n\tTue, 12 Dec 2023 05:25:43 +0100 (CET)", "from NAM11-BN8-obe.outbound.protection.outlook.com\n (mail-bn8nam11on2041.outbound.protection.outlook.com [40.107.236.41])\n by mails.dpdk.org (Postfix) with ESMTP id 9623442DD4;\n Tue, 12 Dec 2023 05:25:41 +0100 (CET)", "from SN7PR18CA0018.namprd18.prod.outlook.com (2603:10b6:806:f3::10)\n by PH7PR12MB6717.namprd12.prod.outlook.com (2603:10b6:510:1b0::20)\n with Microsoft SMTP Server (version=TLS1_2,\n cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7068.33; 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helo=mail.nvidia.com; pr=C", "From": "Artemy Kovalyov <artemyko@nvidia.com>", "To": "<dev@dpdk.org>", "CC": "Thomas Monjalon <thomas@monjalon.net>, <stable@dpdk.org>, Qi Zhang\n <qi.z.zhang@intel.com>, Anatoly Burakov <anatoly.burakov@intel.com>", "Subject": "[PATCH 2/5] eal: fix multiprocess hotplug race", "Date": "Tue, 12 Dec 2023 06:25:13 +0200", "Message-ID": "<20231212042517.164353-3-artemyko@nvidia.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20231212042517.164353-1-artemyko@nvidia.com>", "References": "<20231212042517.164353-1-artemyko@nvidia.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "Content-Type": "text/plain", "X-NV-OnPremToCloud": "ExternallySecured", "X-EOPAttributedMessage": "0", "X-MS-PublicTrafficType": "Email", "X-MS-TrafficTypeDiagnostic": "SA2PEPF000015C6:EE_|PH7PR12MB6717:EE_", "X-MS-Office365-Filtering-Correlation-Id": "0dc0ecda-0514-45a3-1245-08dbfaca640a", "X-LD-Processed": "43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr", "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:216.228.118.232; CTRY:US; LANG:en; SCL:1;\n SRV:;\n IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc7edge1.nvidia.com; CAT:NONE;\n SFS:(13230031)(4636009)(376002)(346002)(396003)(39860400002)(136003)(230922051799003)(64100799003)(186009)(82310400011)(1800799012)(451199024)(36840700001)(40470700004)(46966006)(2906002)(41300700001)(47076005)(36860700001)(86362001)(70586007)(70206006)(36756003)(54906003)(6916009)(7636003)(356005)(82740400003)(2616005)(478600001)(7696005)(6666004)(1076003)(6286002)(26005)(336012)(83380400001)(426003)(5660300002)(8676002)(316002)(8936002)(4326008)(55016003)(40460700003)(40480700001);\n DIR:OUT; SFP:1101;", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "12 Dec 2023 04:25:37.0526 (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 0dc0ecda-0514-45a3-1245-08dbfaca640a", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.232];\n Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n SA2PEPF000015C6.namprd03.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "PH7PR12MB6717", "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": "There exists a time gap between the creation of the multiprocess channel\nand the registration of request action handlers. Within this window, a\nsecondary process that receives an eal_dev_mp_request broadcast\nnotification might respond with ENOTSUP. This, in turn, causes the\nrte_dev_probe() operation to fail in another secondary process.\nTo avoid this, disregarding ENOTSUP responses to attach notifications.\n\nFixes: 244d5130719c (\"eal: enable hotplug on multi-process\")\nCc: stable@dpdk.org\n\nSigned-off-by: Artemy Kovalyov <artemyko@nvidia.com>\n---\n lib/eal/common/hotplug_mp.c | 3 +++\n 1 file changed, 3 insertions(+)", "diff": "diff --git a/lib/eal/common/hotplug_mp.c b/lib/eal/common/hotplug_mp.c\nindex 6027819..e6a3f6b 100644\n--- a/lib/eal/common/hotplug_mp.c\n+++ b/lib/eal/common/hotplug_mp.c\n@@ -428,6 +428,9 @@ int eal_dev_hotplug_request_to_secondary(struct eal_dev_mp_req *req)\n \t\t\tif (req->t == EAL_DEV_REQ_TYPE_ATTACH &&\n \t\t\t\tresp->result == -EEXIST)\n \t\t\t\tcontinue;\n+\t\t\tif (req->t == EAL_DEV_REQ_TYPE_ATTACH &&\n+\t\t\t\tresp->result == -ENOTSUP)\n+\t\t\t\tcontinue;\n \t\t\tif (req->t == EAL_DEV_REQ_TYPE_DETACH &&\n \t\t\t\tresp->result == -ENOENT)\n \t\t\t\tcontinue;\n", "prefixes": [ "2/5" ] }