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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?mzXUpv6JrI+Z0zYw4lRZYv5so0SZcdPnHDXDK1B0aAFDoTKtyxd4U0kUuqL/?= =?us-ascii?Q?E195nRx+Kw6yPww8GwCYUHESZrKBPy21XE8RVkO/aciMm7/OnihORPzhxB2B?= =?us-ascii?Q?/zlmdrCihy+Ainabj8D8/p9KT9wsfsqXFYkF+if9OLxgr84okSri2VRdnqYs?= =?us-ascii?Q?NSAhdXDM5sWRYF2FUwGo3gNRHDBZsSrGu6cP7C0i6p89du3V4bY61IP8pR4t?= =?us-ascii?Q?he3U1YJGlmppbFfzCNUf10iiT5c6bCohmz0UM4Jlxwcr5/WVfEKqMcmHdbEB?= =?us-ascii?Q?UaLJE0xM2eVjfnrZG4I+/0IcqM5X43SyzPrxldiQt7DiCydA7RXaB5A/AtEd?= =?us-ascii?Q?qvFu+X47/PtfHjvlGNy3BzCBobJevYiU7t5s1Qeeav3sF3SEekPFqFX+l3Mx?= =?us-ascii?Q?qXY9EsxeEtWjm+h8JBgfV+XZ6kUbSrmb/sxGjVxwaNWod3QEJhbi9x82DxjA?= =?us-ascii?Q?8ZePNxcJE8u8EVEyHsLQ3xndt/EgvZFgm5akF2Tm4ekc7PD49ZVVqaPJn2xf?= =?us-ascii?Q?H47D5j1r2YRyPS2U87HVf1m4MG9hBsA00YEhcyFSC0fXJqABdO+2WOBWpn52?= =?us-ascii?Q?+Qqop4kDpezA/+dMkL7Bgyvh+FoEi4wa1Ew69QAgZcZq+GoFTZgHSeESyqkU?= =?us-ascii?Q?kRZe/qK6SEWGIzPD3KlYeXUHLgOxG2JiCB+os0uA3F3el/QgDQBBB57vZpvS?= =?us-ascii?Q?kemLorCLMPxsZIZvILqkRFGRAarDq+sHU6qoogDlaStTTcTLeXgqeb7Wq8NG?= =?us-ascii?Q?mF6n3TI3dVLz/eFhmica6T58LT4ynr698X7OCWNlXcuF8iCgBrZzidnu20t/?= =?us-ascii?Q?5zRu7CQJue9ep5FAvRey/HJHzinmlsDE+fgzmu6ap6xn/OebOpvM8mPRk/5x?= =?us-ascii?Q?pkfr2hMLKcAa5LtSadWgM9KueKsDN8/ewTPBNC7sBPqKwEfgqKGB0/jGHsJI?= =?us-ascii?Q?f8uhCYZl7lceECHh2RkaR6FR5WucGewW1tLZ37ybcUzvVXrthVdwzvHdg7AI?= =?us-ascii?Q?2JrwRpeO3i0YKD7NLERyB+NpKOBScmGWUjUYR6/PaiYAS3giYxsMDDN8VDXw?= =?us-ascii?Q?fzpiF4lCrkFej/25rBtbcr+C+r73b5/Kt3yn4lr7IG1JJcD8HfcdMk+QY4f/?= =?us-ascii?Q?0BgBB14SzUtCjoWc2vonPnk+m9vPZ/YiqlgNLCcipn2DKq7tFLfMYGnwDHI3?= =?us-ascii?Q?68732Y25cPJB3Z4WehIw0hzIaKDqbvhQyyxE64YaDv244dMU5YFs6srj753k?= =?us-ascii?Q?j4UeAcs1DPzwyqrjXdLmvyhpgtzAWlJJ3Ylx06aAOKIIi6Qp2zLEFPEeoCvM?= =?us-ascii?Q?JZ3lLUQd/EhjW4F5Onw9hWoa?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: c8bfd7d8-83d0-44ae-f9fe-08d9472663bb X-MS-Exchange-CrossTenant-AuthSource: BL0PR12MB5506.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jul 2021 00:20:45.8543 (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: CZRAfDgxwaXinE0ioUuNzWuTFmTaXmf5uXXwv31rtBSDuEN/jvU5gdqcK1HyPNxM X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL0PR12MB5555 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org 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. 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 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=-16.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER, SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 76C76C47E48 for ; 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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. 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 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=-13.6 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 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 0FE30C1B08C for ; 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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. 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