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=-13.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 C45B1C636C8 for ; Tue, 20 Jul 2021 17:43:35 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 95AE660232 for ; Tue, 20 Jul 2021 17:43:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 95AE660232 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8214E6E525; Tue, 20 Jul 2021 17:43:11 +0000 (UTC) Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2070.outbound.protection.outlook.com [40.107.94.70]) by gabe.freedesktop.org (Postfix) with ESMTPS id 97FA96E51B; Tue, 20 Jul 2021 17:43:09 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AQpBVhgIibZwQoD3n6UWz11+XfYkL+4X9u5eswEC/o/soj1yKIgJhqEmsZfNUIQs3Y1QEZEnw3CiTPiVymRkTkM3dD7gVyRVCEzDOlkrPGAhEjy4gRD28a/aTYCIEJO9cRrOsXEFS1ScpCAiMgXd9J8+F6aUU2DCFSpyR9a3j6MlMvZ3JrxD/88HvXFkRKJx8UObWQfiK58c+BYL11yOrunzbA/J4VYX22Sg8DgdgFRf43RSR7d0yGQ/RtB2aiUvFKNiqQD/5yoqKcB+Mm7bfpdTdV9SLOMEco499swOPJ5GjlGEntE5MhH6JExOXU1MRpAEsbzw1nHWGR7UZ4KpDw== 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-SenderADCheck; bh=FLzSCfm46aaxgunSwJCbcPbWiLquGUluYNQWWJ5J2ns=; b=StWi9m5kaRwKr0q+I2p2FpLT3IlCxv9UynHdbM/IA/i2AlM0KoMgobPDDTmX4gyqfhAsJHRjjXIccTroA+Q+bBaP64T5cx25bVLfraL4AXSrM3P5ZsurknIBlzx3qcOJCfynOSCOuv3PQi8OM5Pa2H1ERKtEzp8LM65fJx+LPdkuYi88OT42gcudxkB/ZFnlOHqYFgG71XzVpAAMo7sJVlyJfMVdiJ+JvNJ4L/lE38hcGLZoQY/HX8PQlzB9VyRt1RcfQ5DwMIB6uhJEttyzQWwZnMwX//rtFxS5YzA1fpgfVO54ljbHgdC8i1fHKYYw4t5qiwAu8pWVtWGpxbZmlg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; 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=FLzSCfm46aaxgunSwJCbcPbWiLquGUluYNQWWJ5J2ns=; b=L6vfJjoMn6cOrH0c+ljatMcGy+B8qmfWl7Jn8rxBDofioPO365hUh5oreWqFP2L9zgUTBtQSqqC5ExPnyGc1fjbZfh3ZYAE/BsZta/aOdofgIiC6yLn+yHxzzYjoNp1DX/b5LwkbxkPpqIVCmBusSv5V3NA/yFV2SGtL82nqyir8LOaYVJ3HX/PO30jDnyE4c0/FNmis22I0yYCB8ai7jmJ4Uyi7tc/jW7sLwbojLOmNqKM2ybJhjtEu8kzW0W31O1ebV+DtUfODpjahatyRCLCavn2Z2u39G76jXQSeAv3LIEDyOPtjYPkwI9fmkSnIbrsSptn6kLRvMs6EARsgkw== Authentication-Results: linux.ie; dkim=none (message not signed) header.d=none;linux.ie; dmarc=none action=none header.from=nvidia.com; Received: from BL0PR12MB5506.namprd12.prod.outlook.com (2603:10b6:208:1cb::22) by BL1PR12MB5288.namprd12.prod.outlook.com (2603:10b6:208:314::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.21; Tue, 20 Jul 2021 17:43:08 +0000 Received: from BL0PR12MB5506.namprd12.prod.outlook.com ([fe80::d017:af2f:7049:5482]) by BL0PR12MB5506.namprd12.prod.outlook.com ([fe80::d017:af2f:7049:5482%5]) with mapi id 15.20.4331.034; Tue, 20 Jul 2021 17:43:08 +0000 From: Jason Gunthorpe To: David Airlie , Tony Krowiak , Alex Williamson , Christian Borntraeger , Cornelia Huck , Jonathan Corbet , Daniel Vetter , Diana Craciun , dri-devel@lists.freedesktop.org, Eric Auger , Eric Farman , Harald Freudenberger , Vasily Gorbik , Heiko Carstens , intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, Jani Nikula , Jason Herne , Joonas Lahtinen , kvm@vger.kernel.org, Kirti Wankhede , linux-doc@vger.kernel.org, linux-s390@vger.kernel.org, Matthew Rosato , Peter Oberparleiter , Halil Pasic , Rodrigo Vivi , Vineeth Vijayan , Zhi Wang Date: Tue, 20 Jul 2021 14:42:59 -0300 Message-Id: <13-v2-b6a5582525c9+ff96-vfio_reflck_jgg@nvidia.com> In-Reply-To: <0-v2-b6a5582525c9+ff96-vfio_reflck_jgg@nvidia.com> References: X-ClientProxiedBy: MN2PR22CA0018.namprd22.prod.outlook.com (2603:10b6:208:238::23) To BL0PR12MB5506.namprd12.prod.outlook.com (2603:10b6:208:1cb::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from mlx.ziepe.ca (142.162.113.129) by MN2PR22CA0018.namprd22.prod.outlook.com (2603:10b6:208:238::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4331.21 via Frontend Transport; Tue, 20 Jul 2021 17:43:05 +0000 Received: from jgg by mlx with local (Exim 4.94) (envelope-from ) id 1m5tll-0051FK-RM; Tue, 20 Jul 2021 14:43:01 -0300 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 67c687d2-942a-44f2-5871-08d94ba5d41f X-MS-TrafficTypeDiagnostic: BL1PR12MB5288: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:608; 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:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BL0PR12MB5506.namprd12.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(396003)(136003)(376002)(366004)(39860400002)(346002)(66946007)(7416002)(7406005)(86362001)(2906002)(66476007)(54906003)(38100700002)(83380400001)(8936002)(316002)(110136005)(478600001)(36756003)(66556008)(186003)(26005)(5660300002)(8676002)(921005)(9786002)(9746002)(4326008)(426003)(2616005); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?VKf24NszFTp6+mvWF1sC1lgvCA2bK6drIHPPgHcTSijz0Zn/3La0iSMtdK9I?= =?us-ascii?Q?vyktlSpfoHHKuWBj+dpuM6RtmqjIhe8lAKaDcfyhESdWfabrgUIWbb38/WFc?= =?us-ascii?Q?xaZGaqGcRbh0U60X2lWmRj1RXycUmTmCvH2yG0cKkq9x+vLrIY1daZkfrIed?= =?us-ascii?Q?6AJAShjx124vlGFE9Eujkf1yCl2X0gbrqchW2FLpgJDmWuon0vQieB5sD7UD?= =?us-ascii?Q?5/bChbrm4T00Y5+nCEnmGvT88FTGF9mwI/ev9V4sKfJ1RyQkR2AFQoaIZlow?= =?us-ascii?Q?OL+sGCnQFht+vjBSkflPxLiBIg5ZJQbZ1d7auRHe4cbndOn8/5Xm9L1eiPjY?= =?us-ascii?Q?H3wn4p2AAAEtb6Z1snBofq0KJTTEHZbgn94g1YAKRkcsE4UKIaLuA6Am5hc/?= =?us-ascii?Q?vUF9JZCDdvAju8hjdmRKnPPurI6DPrfSW1gBz3XkGZcGUg4kHXHNJS8jKWcp?= =?us-ascii?Q?gpJmlplswWlMAuFfIDbBJvJYTaNSY33pNgGyT/Eq64draerasqpMM0s50dkv?= =?us-ascii?Q?fCZmzeO7sv5O0mbd0hP7MVBSumVkPn4atpC1y3nuU0a8HZAAWCtAniMnzkxc?= =?us-ascii?Q?9p/eZ3TJs4jmahWlm4jnaJzbEB0Tln2hA20QhvH01rIabV5pPYlDg2r/CuyX?= =?us-ascii?Q?LfuT5A0TaJcSh7L2+qf26W1Cws35kqW2kKXb/mAzpZk2sHKxzKNsFaJF4/D9?= =?us-ascii?Q?+/lA9IhC4qqd8S2xxdia7byUE4KWf2YxXs8bctSKHhldbpRSumTvJFkAmuos?= =?us-ascii?Q?LPG3RpnjyrUQ7c4HCpgdmmf8ByYAx/Jyew04tbp8nOGkyTGf0BHnK346tIkn?= =?us-ascii?Q?zmN5KpVodx7KciTxfBHEAI+3yMkfEWZjrSRPYvt0odgrUnpVe9s1Lrwbdoem?= =?us-ascii?Q?B6gYTg4wjhwf6gTeGc050LSEGtlBVOOz/V18OZenm9s5Zt75qEK50pyexal2?= =?us-ascii?Q?UY2ED6tkOZ1wPnCj3aPJaQ2i5pEe8jnhL8Pczu3WrzpaUQldHXZUHtPsGFCb?= =?us-ascii?Q?cB8/0NqjFSHIeObRbN6CBiF0kVTzpPDnGVF5xtoFomkVFdPVRJpZqjUKgeFL?= =?us-ascii?Q?oY6uMnODqYb3JCeasAfr5X09AS3Bya32bJk2b2drQLwYXvvgI7QRIBt6VKH/?= =?us-ascii?Q?xHfJj7FBi6eAmDWNSm4Tevoa4+WocWdUY3MeTtWhiZX1YGWaxhD3PzdWW/a3?= =?us-ascii?Q?nld7e46b3XczraW5Q0n5wDSdytY7ST39B64MWCwpJ7h1dU2dqz5lMcZcbryX?= =?us-ascii?Q?hkFrp4XBYvwcwFJDffAwpbKm8mBSt+9eZhPirmDWp7ms4E1dk38/gyocAayZ?= =?us-ascii?Q?LlrC3rNovEwk+7EH7vw3ej6k?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 67c687d2-942a-44f2-5871-08d94ba5d41f X-MS-Exchange-CrossTenant-AuthSource: BL0PR12MB5506.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Jul 2021 17:43:05.2018 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: NdoOL+styLJQNHiZRvJ/2E5F0H2zJ6PacZgh+X0uYh/zg58WGcAwAIbTASMOlfrR X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5288 Subject: [Intel-gfx] [PATCH v2 13/14] vfio/gvt: Fix open/close when multiple device FDs are open X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Max Gurtovoy , Yishai Hadas , "Raj, Ashok" , Leon Romanovsky , Christoph Hellwig Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" The user can open multiple device FDs if it likes, however the open function calls vfio_register_notifier() on device global state. Calling vfio_register_notifier() twice will trigger a WARN_ON from notifier_chain_register() and the first close will wrongly delete the notifier and more. Since these really want the new open/close_device() semantics just change the function over. Reviewed-by: Zhenyu Wang Reviewed-by: Cornelia Huck Signed-off-by: Jason Gunthorpe --- drivers/gpu/drm/i915/gvt/kvmgt.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 1ac98f8aba31e6..7efa386449d104 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -885,7 +885,7 @@ static int intel_vgpu_group_notifier(struct notifier_block *nb, return NOTIFY_OK; } -static int intel_vgpu_open(struct mdev_device *mdev) +static int intel_vgpu_open_device(struct mdev_device *mdev) { struct intel_vgpu *vgpu = mdev_get_drvdata(mdev); struct kvmgt_vdev *vdev = kvmgt_vdev(vgpu); @@ -1004,7 +1004,7 @@ static void __intel_vgpu_release(struct intel_vgpu *vgpu) vgpu->handle = 0; } -static void intel_vgpu_release(struct mdev_device *mdev) +static void intel_vgpu_close_device(struct mdev_device *mdev) { struct intel_vgpu *vgpu = mdev_get_drvdata(mdev); @@ -1753,8 +1753,8 @@ static struct mdev_parent_ops intel_vgpu_ops = { .create = intel_vgpu_create, .remove = intel_vgpu_remove, - .open = intel_vgpu_open, - .release = intel_vgpu_release, + .open_device = intel_vgpu_open_device, + .close_device = intel_vgpu_close_device, .read = intel_vgpu_read, .write = intel_vgpu_write, -- 2.32.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx