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Tue, 27 Jan 2026 10:55:06 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v11 2/8] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Date: Tue, 27 Jan 2026 10:54:54 -0800 Message-ID: <444724fc12a62f3746b6ad38d04e88c2872ec9a0.1769539310.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: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF00002320:EE_|DM4PR12MB7719:EE_ X-MS-Office365-Filtering-Correlation-Id: 62f1fcd3-4fc1-4c2c-46a8-08de5dd5a096 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|82310400026|376014|7416014; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?9IDxedcweOKwcd6pREi2AARck5TXs2P2GLcMrSlnXSY2pGt7rh54i3DT+XSQ?= =?us-ascii?Q?QAoOT0pncM+B/2cbBCobkV8jkrZTA7VyrNlKY6YTrRTtLpjqN6uqwTOAFmcx?= =?us-ascii?Q?LSYEOHndpkfV6YuWmcmsls3UrCgKOEWgguSoVq1S4Ko046454RxlKW64EpJA?= =?us-ascii?Q?i/MA68/7OqWDDPSnASAx8OiLAeuAS6ywgMe+7w+LBE9hsCldkGm0iQDFHCb8?= =?us-ascii?Q?DYRp23VQXtb7QEKYAkqGzLwfKkxMAa3od4HGpEMcrPuAudRFl09ORiBlWDMw?= =?us-ascii?Q?80R57pJSryebqBpyu4s5W+rHwNxbNtuwCsF0ysNLh/wuXYwynZBOUjwqnB73?= =?us-ascii?Q?wwJWAv7hhBbROMzCsiukeGOOjgVTavUuZowvVkYceIMiS3XTWOycIZlTQIbq?= =?us-ascii?Q?cNm3d5EHXYvZqcJmQ6Qwpefs5jwXa3bDEw2/rXTKC7JmUm8JhiSy3JvZumsg?= =?us-ascii?Q?AVPOAFGJoQ+mDfNEh3vuaQV3A5zX7nGPyJHH7oLm2vmSn/x9+yQ6fIrxNXqi?= =?us-ascii?Q?XKlgLOBJHwTojnrzRj5KZh+iN8C7AQ0mRCXqdh6R98Pt6WlLJkvx7RfUzMVB?= =?us-ascii?Q?jsvqci3LsE4SYbm7xeZXKrQliLXVUDYAQWGh9YaCYBXUpOlWaMba5TMQhctU?= =?us-ascii?Q?4omX2rMkOnlSGcMC4lKJVfrOB8wAgjXXH6L2RWYan6yZT9amOIWiyFksHDzk?= =?us-ascii?Q?zCof+SRXYrvbPC7OFRFJkPuPUmDVyjHnZkfDVHe2HA37d182CyOBSCCqQ/uN?= =?us-ascii?Q?Vq3CM6GrFbjbus1UyOxInmlupPQ6HW0ViMgxxki4Ej7f4TJcyKA51h0/0qyD?= =?us-ascii?Q?nMKHlINBrXOB91IB+hy/xBTHSxCtxK6mAQCJ5uE32tHw4ykPqaP7FiOnK9Qw?= =?us-ascii?Q?ShhYRI+rIlN7G1jd7KHtj4BVE1rBhDZFDPGLQ5tpUHcMPjSBSP7/KdGesfn7?= =?us-ascii?Q?lSDpKByOfmG6Ka2NhVEvmuiSE9sAFwBQOQIjreqRpfj882DmHNSNKE50vQfQ?= =?us-ascii?Q?WXtsh3C9IFlym4wMVWwyn3r8DIfxovRBpYVELrAPROqD8tU0nQJbeNKFftwl?= =?us-ascii?Q?72+/eulaM1Ki+zKKJoKsW50oGPDUoVDXTWpYxYyKD7ZtpaHOSm2WDjjLwDO7?= =?us-ascii?Q?tGtHxYUgTmdXVx9h0p9GC2xuEzYQ+BzV4DWX6KjErBDAhkNjpLDwx4cdb9vR?= =?us-ascii?Q?Z6dhontwoGgivINEla16XM+MIt9gEzZpJtdCyADL6x+EXecABk1KXWBGVxc8?= =?us-ascii?Q?0WVHjhugZgdsXqUJrSdfAtBcNlVfnANG8QfVjfkUIZJoqy+6gap8Uf5pVOao?= =?us-ascii?Q?io1EAZvR4+PJtPQvJV3t8lGyfKTReRdCK4yO/YdYK3Yfg9miBMUPYM5X+1JU?= =?us-ascii?Q?j9XdgObNufBoBJfFjdbLtQY3DQpfBSkh4QKlyUaRmWoocy3mN0wX/gvhlPA7?= =?us-ascii?Q?d6fPnRuO6O03LwBNDmItUqFzCZDwreZ2yipQV61l/6ZUoNJjRvXUm4fKtJcm?= =?us-ascii?Q?tYUxJLO9gYbGDAwqe/A3IrP4Wqw67L1U7kWgr9eoC8PDNRJyby9lbf5304ju?= =?us-ascii?Q?cNfh9Oy6O3FHipEwUB+KRhdHfNQr7axnkbd3y7d1e7vhaoTfswkcFu+HOqx8?= =?us-ascii?Q?qBydhjIQULdck6ZuCpOu1NJaIXg9JSRAuVKZFy9Y3jq91PDDWVpVvcUNr4Cg?= =?us-ascii?Q?GQ3syw=3D=3D?= 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:(13230040)(1800799024)(36860700013)(82310400026)(376014)(7416014);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2026 18:55:23.6487 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 62f1fcd3-4fc1-4c2c-46a8-08de5dd5a096 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: SJ1PEPF00002320.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB7719 Content-Type: text/plain; charset="utf-8" Both the ARM_SMMU_DOMAIN_S1 case and the SVA case use ASID, requiring ASID based invalidation commands to flush the TLB. Define an ARM_SMMU_DOMAIN_SVA to make the SVA case clear to share the same path with the ARM_SMMU_DOMAIN_S1 case, which will be a part of the routine to build a new per-domain invalidation array. There is no function change. Suggested-by: Jason Gunthorpe Acked-by: Balbir Singh Reviewed-by: Jason Gunthorpe Reviewed-by: Pranjal Shrivastava Signed-off-by: Nicolin Chen --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h | 1 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 1 + drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 3 +++ 3 files changed, 5 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/ar= m/arm-smmu-v3/arm-smmu-v3.h index 3c6d65d36164..24894b163004 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -856,6 +856,7 @@ struct arm_smmu_master { enum arm_smmu_domain_stage { ARM_SMMU_DOMAIN_S1 =3D 0, ARM_SMMU_DOMAIN_S2, + ARM_SMMU_DOMAIN_SVA, }; =20 struct arm_smmu_domain { diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iomm= u/arm/arm-smmu-v3/arm-smmu-v3-sva.c index 59a480974d80..6097f1f540d8 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -346,6 +346,7 @@ struct iommu_domain *arm_smmu_sva_domain_alloc(struct d= evice *dev, * ARM_SMMU_FEAT_RANGE_INV is present */ smmu_domain->domain.pgsize_bitmap =3D PAGE_SIZE; + smmu_domain->stage =3D ARM_SMMU_DOMAIN_SVA; smmu_domain->smmu =3D smmu; =20 ret =3D xa_alloc(&arm_smmu_asid_xa, &asid, smmu_domain, diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/ar= m/arm-smmu-v3/arm-smmu-v3.c index f0e3b407c293..a55f9ae95411 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3133,6 +3133,9 @@ static int arm_smmu_attach_dev(struct iommu_domain *d= omain, struct device *dev, arm_smmu_install_ste_for_dev(master, &target); arm_smmu_clear_cd(master, IOMMU_NO_PASID); break; + default: + WARN_ON(true); + break; } =20 arm_smmu_attach_commit(&state); --=20 2.43.0