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Fri, 13 Jun 2025 23:35:38 -0700 From: Nicolin Chen To: , CC: , , , , , , , , , , , Subject: [PATCH v2 08/14] iommufd/selftest: Drop parent domain from mock_iommu_domain_nested Date: Fri, 13 Jun 2025 23:35:20 -0700 Message-ID: <0f155a7cd71034a498448fe4828fb4aaacdabf95.1749882255.git.nicolinc@nvidia.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PEPF00000147:EE_|CH3PR12MB7667:EE_ X-MS-Office365-Filtering-Correlation-Id: 30e04c5e-70dc-4544-54ac-08ddab0db451 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|7416014|376014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?sJYWo0kUVFtpU4Dwj1xeQU4xjWUPwAUaj9hcVqaXVPtCPZQorDnpEkPLpiGu?= =?us-ascii?Q?JKpyLZWDvSu+9f2sIEXO+chr7i0ZTCgggL4k0G8Q8ILslW2/Fm10K7Xze5Kt?= =?us-ascii?Q?n5NxpcRTsfm2C8LgnbwXPsFhAfZlWO0VlVRKfIr7SOE0ZoJHmnmqb1x78Jx/?= =?us-ascii?Q?WEdac2X0ONbP0sJCOZlZMINd6ZoboGRgk1l1wlprw9lGgftvb5PRvWJSTOKc?= =?us-ascii?Q?NZK3z1XaJ7i0fxZYD8o54CNpWJya7fEdrGa+VxCMNP2efu8Rq/ZI3Jj53ci7?= =?us-ascii?Q?esRpr4WOd0PS1vtkM1DRLAK+G5lz4S/IkBHTeHgo86z/RNbuOyglYuHiWVje?= =?us-ascii?Q?Ufyx1/Ckkuc49dE/xhAhEFWafANJox25lnzfduc8Qznn4gk1P/c2u3f5xg05?= =?us-ascii?Q?k9qPzI9uPUiE8vKh8N08/iN7vjt9pTgC7Ls44IMJ4LJA8Ku5QkOghyt9zc2t?= =?us-ascii?Q?J0oFpcr1UTRQ8PLMLwyR+W9SNbyOEgqN043tZFIX24pq101OA4ajRnSYrUqA?= =?us-ascii?Q?LupCO3l3K8c1Rs4WZWZO4lag3lecZgVxRTk9PU/GVr5LZApRQk6SCBMmHhoZ?= =?us-ascii?Q?SnSb++kRYCKYtxwbFaSEKop7DVOEHQvq91lfwNPbdHBUbtxBW4ugtSx5tu+M?= =?us-ascii?Q?NhovxdgPgwUi3G+ml/btV7guMbHVfziituNCo+qXO7neyCKHLvoWw+UpFgPU?= =?us-ascii?Q?9yILnZ/9N5Ne4ASUHNQx72+pTDh6MsTXbJquwcwB2FSpQt4c2QBhaWgKU5UQ?= =?us-ascii?Q?lyvNQepJ+rydLqL2ap6QJIG8W4P+r4+mmYI3Rkj0DERrmvU4jIiBm3mgWMHK?= =?us-ascii?Q?LB3Qu0D8+tPFZEp8q03MOzH3omH2ib+Y7wCoqDo78C0fdDiFbEL4AJDXTDuu?= =?us-ascii?Q?P94eiePJkbWnzhlVsX6KX0DEhN74pFvS6xtHzs1m4r1QxS0J5h1Z8fVxYjz7?= =?us-ascii?Q?a9jT16k4NvlZ9jLfCSHM3qYhy+PHtsYXp87sqQETLdbTM6uqmbDtJ0nlsq8O?= =?us-ascii?Q?qTy4/pHIul5f2fiNPTGgad9sATjykqiJJUbxC1CnvTmQvCuxUoWixOxeCZd6?= =?us-ascii?Q?eL+TkLaGlIIyW4lfVJVroPnfcR3m7iKWqV2OKpiYkhStcdFhMnXKaUyj1iG7?= =?us-ascii?Q?+VfvAVG2Z/2rUzcZ85VM7PzuMfsYRBP4ROgnepce/ZdeqsXNGLVO8REuB4Gr?= =?us-ascii?Q?o+PbQgORPmcVaO7YoKpPk0sFmyu901H5GeSyp8IbhcDOpwQ2+rmRI6FOKi2H?= =?us-ascii?Q?2ZYl++9SzHK81WjuTPjniLGQWjKa4MHhmQWNjuGpCwyUMCriwc+zUXL6UNXA?= =?us-ascii?Q?iz6sW63e/SdzQs2ICTe5GNiPU2f7Kmw9/QpgnAvWAIcxvc+gXq8zGHAWT3rn?= =?us-ascii?Q?SVbq1J013qNizwuRCIRjhqiKIIFXiqYpzTopHLhVzW1o2RZnAXPTtYccHApV?= =?us-ascii?Q?Vj2LHmHLOF9S1IQ+y6D3CMRwmeKO6KDD8dETojp6PVgWOdlJ5oxDC04rtext?= =?us-ascii?Q?D4FZgxUWgndVJgfazHqJmJE46FPhdLFMqoiw?= X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(36860700013)(82310400026)(7416014)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Jun 2025 06:35:50.2991 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 30e04c5e-70dc-4544-54ac-08ddab0db451 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF00000147.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7667 Content-Type: text/plain; charset="utf-8" There is no use of this parent domain. Delete the dead code. Note that the s2_parent in struct mock_viommu will be a deadcode too. Yet, keep it because it will be soon used by HW queue objects, i.e. no point in adding it back and forth in such a short window. Besides, keeping it could cover the majority of vIOMMU use cases where a driver-level structure will be larger in size than the core structure. Signed-off-by: Nicolin Chen Reviewed-by: Jason Gunthorpe Reviewed-by: Kevin Tian --- drivers/iommu/iommufd/selftest.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/iommu/iommufd/selftest.c b/drivers/iommu/iommufd/selft= est.c index 4d5dca8027b1..f9cfb3a20860 100644 --- a/drivers/iommu/iommufd/selftest.c +++ b/drivers/iommu/iommufd/selftest.c @@ -138,7 +138,6 @@ to_mock_domain(struct iommu_domain *domain) struct mock_iommu_domain_nested { struct iommu_domain domain; struct mock_viommu *mock_viommu; - struct mock_iommu_domain *parent; u32 iotlb[MOCK_NESTED_DOMAIN_IOTLB_NUM]; }; =20 @@ -434,7 +433,6 @@ mock_domain_alloc_nested(struct device *dev, struct iom= mu_domain *parent, mock_nested =3D __mock_domain_alloc_nested(user_data); if (IS_ERR(mock_nested)) return ERR_CAST(mock_nested); - mock_nested->parent =3D mock_parent; return &mock_nested->domain; } =20 @@ -692,7 +690,6 @@ mock_viommu_alloc_domain_nested(struct iommufd_viommu *= viommu, u32 flags, if (IS_ERR(mock_nested)) return ERR_CAST(mock_nested); mock_nested->mock_viommu =3D mock_viommu; - mock_nested->parent =3D mock_viommu->s2_parent; return &mock_nested->domain; } =20 --=20 2.43.0