From patchwork Mon Jul 31 10:25:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avihai Horon X-Patchwork-Id: 1814924 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=Nvidia.com header.i=@Nvidia.com header.a=rsa-sha256 header.s=selector2 header.b=pCckrrsZ; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4RDvZD0nmnz1yfG for ; Mon, 31 Jul 2023 20:27:32 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qQQ6u-0000hY-7W; Mon, 31 Jul 2023 06:26:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qQQ63-0000aq-UC for qemu-devel@nongnu.org; Mon, 31 Jul 2023 06:25:51 -0400 Received: from mail-co1nam11on20618.outbound.protection.outlook.com ([2a01:111:f400:7eab::618] helo=NAM11-CO1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qQQ61-0006tC-Gm for qemu-devel@nongnu.org; Mon, 31 Jul 2023 06:25:51 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=KqstIj8ok82b0LKEtgl3j+UTUcsKVseHELCXywkv2+ogNBMPua+AZgUE8472XVD2JHKxY/IvAO79ER+WmukmDGNovg54sa2DikTIS3Fo8ZhrunT670Lz0svK03txli0eUWqMBkvX3LZKIx2vuUNRl7JBwuTMOwAnfQhYZgQTGOhjqYeByB/l4CnTy9yFzZxBbhUJSEjY7nIGdQ+4HiYDuwveDrAe/eJRLdsDQjSx84DWVbgre0+kIZLtM1piYdxvceJLmG1QeieQqzzRmhZHBEXVNyNddWDlrA68/57qRreT3sYBVv+gglUhR39PAXGYNDTypCN8930agTS6yPk6WA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=8JJJi1BljvRnqc53fMAMnBZ/7qU6EKYrUo6YPtPQy70=; b=lCBk7wxN9QtBWhcmskUDv2SwkZBNuweeovFhykgaUJ5F1n9Jnd7SecTnHpeBtfOuclXAi62DL/xt56NW9vhAQVF8tL9FV0j+8mIdq7bOj8fwv2RC3d+20oOVnah7FlzgJ27daqXVr7Mws3xOMAizdCVVU4xngRHpJcJD1wZK9IaxbvI3y/Sn0Zk8SkauWRx5b1YfgHx5M95NE4jPXwOTMydH1R+bk33Ea8xGB15nHH+6jDBAXWLnsQA661re8wYcEaKLDu5o0k5ei57P5TSf+iTfTv2b3GwkzhG2gmjQOFFpNiwTF4hkeQ1GsOjrJ1LAilEZO78+6cVh/M83omwhKA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.160) smtp.rcpttodomain=nongnu.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=8JJJi1BljvRnqc53fMAMnBZ/7qU6EKYrUo6YPtPQy70=; b=pCckrrsZwMLp3CZYmXjATLPl8eAoijXBGPvJ9NSrLUj5TvSg1b+Z+VG/N14giVng8AAk39KL6FZM+vQkgaFz4OU39s7aK7SEeT5XDX3PuoCwHLhMquFX4mIcCElkHL9cm6Bi4D5atiqg/1mn89UIGlyPhBbPj2sQ2FKMLmdT+gjxrKRwAVFIIHjWJ5qXgrmyTBtpBqWgvHIKuJnsJpci/37wzGZ6reVpyKvX6CJHdBX1fLNNvR32sFMBwONLbls4nLErl7j85yCk/JbCguypPKxmhpetXCNus4rfpkPSfbC2nT9ZXyIbrwSQH+5kpZ1S6JJONLJwB55ae0Gxj9jkOg== Received: from BY5PR17CA0035.namprd17.prod.outlook.com (2603:10b6:a03:1b8::48) by SA1PR12MB7368.namprd12.prod.outlook.com (2603:10b6:806:2b7::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6631.42; Mon, 31 Jul 2023 10:25:45 +0000 Received: from DM6NAM11FT115.eop-nam11.prod.protection.outlook.com (2603:10b6:a03:1b8:cafe::34) by BY5PR17CA0035.outlook.office365.com (2603:10b6:a03:1b8::48) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6631.42 via Frontend Transport; Mon, 31 Jul 2023 10:25:44 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.160) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.117.160 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.160) by DM6NAM11FT115.mail.protection.outlook.com (10.13.173.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6631.44 via Frontend Transport; Mon, 31 Jul 2023 10:25:44 +0000 Received: from rnnvmail202.nvidia.com (10.129.68.7) by mail.nvidia.com (10.129.200.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.5; Mon, 31 Jul 2023 03:25:29 -0700 Received: from rnnvmail204.nvidia.com (10.129.68.6) by rnnvmail202.nvidia.com (10.129.68.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Mon, 31 Jul 2023 03:25:28 -0700 Received: from vdi.nvidia.com (10.127.8.9) by mail.nvidia.com (10.129.68.6) with Microsoft SMTP Server id 15.2.986.37 via Frontend Transport; Mon, 31 Jul 2023 03:25:25 -0700 From: Avihai Horon To: CC: Alex Williamson , =?utf-8?q?C=C3=A9dric_Le_G?= =?utf-8?q?oater?= , Paolo Bonzini , Joao Martins , Yishai Hadas , Jason Gunthorpe , Maor Gottlieb , Kirti Wankhede , Tarun Gupta , Avihai Horon Subject: [PATCH for-8.2 v2 1/6] vfio/migration: Move from STOP_COPY to STOP in vfio_save_cleanup() Date: Mon, 31 Jul 2023 13:25:16 +0300 Message-ID: <20230731102521.15335-2-avihaih@nvidia.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20230731102521.15335-1-avihaih@nvidia.com> References: <20230731102521.15335-1-avihaih@nvidia.com> MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT115:EE_|SA1PR12MB7368:EE_ X-MS-Office365-Filtering-Correlation-Id: bd6bb181-484a-4dcd-9cac-08db91b07fcc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160; CTRY:US; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:dc6edge1.nvidia.com; CAT:NONE; SFS:(13230028)(4636009)(136003)(396003)(39860400002)(346002)(376002)(451199021)(82310400008)(36840700001)(46966006)(40470700004)(5660300002)(2616005)(426003)(1076003)(8936002)(8676002)(186003)(336012)(36860700001)(316002)(26005)(47076005)(83380400001)(478600001)(70586007)(70206006)(4326008)(6916009)(54906003)(107886003)(6666004)(7696005)(41300700001)(86362001)(40480700001)(40460700003)(36756003)(2906002)(356005)(7636003)(82740400003); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Jul 2023 10:25:44.6038 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bd6bb181-484a-4dcd-9cac-08db91b07fcc X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.117.160]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT115.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7368 Received-SPF: softfail client-ip=2a01:111:f400:7eab::618; envelope-from=avihaih@nvidia.com; helo=NAM11-CO1-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Changing the device state from STOP_COPY to STOP can take time as the device may need to free resources and do other operations as part of the transition. Currently, this is done in vfio_save_complete_precopy() and therefore it is counted in the migration downtime. To avoid this, change the device state from STOP_COPY to STOP in vfio_save_cleanup(), which is called after migration has completed and thus is not part of migration downtime. Signed-off-by: Avihai Horon --- hw/vfio/migration.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 2674f4bc47..8acd182a8b 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -383,6 +383,19 @@ static void vfio_save_cleanup(void *opaque) VFIODevice *vbasedev = opaque; VFIOMigration *migration = vbasedev->migration; + /* + * Changing device state from STOP_COPY to STOP can take time. Do it here, + * after migration has completed, so it won't increase downtime. + */ + if (migration->device_state == VFIO_DEVICE_STATE_STOP_COPY) { + /* + * If setting the device in STOP state fails, the device should be + * reset. To do so, use ERROR state as a recover state. + */ + vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_STOP, + VFIO_DEVICE_STATE_ERROR); + } + g_free(migration->data_buffer); migration->data_buffer = NULL; migration->precopy_init_size = 0; @@ -508,12 +521,6 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque) return ret; } - /* - * If setting the device in STOP state fails, the device should be reset. - * To do so, use ERROR state as a recover state. - */ - ret = vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_STOP, - VFIO_DEVICE_STATE_ERROR); trace_vfio_save_complete_precopy(vbasedev->name, ret); return ret;