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Mon, 8 Sep 2025 16:28:39 -0700 From: Nicolin Chen To: , , CC: , , , , , , , , , , , Subject: [PATCH rfcv2 2/8] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Date: Mon, 8 Sep 2025 16:26:56 -0700 Message-ID: <390fe709e756a54168fcd43e1323998456f2d8d5.1757373449.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: CY4PEPF0000FCC1:EE_|MN2PR12MB4374:EE_ X-MS-Office365-Filtering-Correlation-Id: e8924a8f-4e61-42a3-0e62-08ddef2f7a41 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|1800799024|82310400026|7416014|36860700013; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?oows/SxeqP2RXJ+ozrBU8BqovvJEIkBQRaX05HpS3SLs43ytMKKACMZAEBn1?= =?us-ascii?Q?Kp1HqJ8eHtt75D0lAhmF3Tn5vqDq9P3wDqfzqR+w5eVB2IjG+HsOjwiBE7ES?= =?us-ascii?Q?gN+vl8qCI5o1Owpdq7i58AJTZUXznKpk+uOV/OAbRVGtycGlLNk/QWPAlxxe?= =?us-ascii?Q?syVijvULD9fkuqh7MeO1Orhqj8EOwa1+r5jSZnrHy9tZlh3H/xBOg/60ze6r?= =?us-ascii?Q?pqdnoA2OpSP63bcmhR95Sxu8vG3x+toN8rxjsrvZGdbC4YVerbb8dIlRgnss?= =?us-ascii?Q?6Hvf9qCJ4F+qoHBBoH4Vrvwlj6bTLugXd/dfz6PhLAmy8OZhTCkFGZFRONnN?= =?us-ascii?Q?WVY/DVLz+YggN7aNJa2XFFBpDNTZlRLUjo2C1cDTgiziTqPmXr7cKojmJmfD?= =?us-ascii?Q?0BruAzTcrr9MVZFPJFKzNjq5zQAXXlCsA0+0rL1sAZvIdbMMrsquQR05BhGz?= =?us-ascii?Q?IJeMsz+/Ye3IzH75XlFoVEmEtPHbMH/9Q7peDHn9wFbE1mtoVaVlHQcv+n95?= =?us-ascii?Q?xPtRhis/wl0DbV0dqCY6WEAuSs58pnhVw1HEql3sEzexnRfGYg93mcym4Hjw?= =?us-ascii?Q?IAS11KRJtOEy4waM0PehioLIjZMdF9bYalEtm+SyFU/aXcrnPGlrMHjAf+M5?= =?us-ascii?Q?6yc6tvcOBC4h0xOZv7kLlE/C0FdzHUqka1Sn7ze3VFSh7qEG1Z52w55wfDXY?= =?us-ascii?Q?BAcWNbjyT2cnB0XO6BVU5cbTsgAC2QKmTqnXNWrhpBhg1yNIYet2fv7TyOm2?= =?us-ascii?Q?aztgyuKIpoxPqWB27x5DfTfYphlWYh4EG0mM1VVoVN3sTokRgtbOWYaHrxxj?= =?us-ascii?Q?H51BaVIsXVz2BhJUEconWdxYQWe20kyQoKo2efSIizyt80tUTTMggfolvwAc?= =?us-ascii?Q?byh+xyp9fOaMjdug49hOCbcjTwmXqxrjZBLkFKMlzqHkF6OHPyJM1OjBawuX?= =?us-ascii?Q?dFFeX/YzuRkO3Ajul2zr7Y6ZYGRYZKxlQIwE0XzpjloyJtsut0nOZRYojCdS?= =?us-ascii?Q?xPnq3QGhs3CvWAzezIlJ5mJPKkG1nn2ePSreJQ8cBpsANPm1QQSFfXBecmOc?= =?us-ascii?Q?+WHOXavwaDYsAKGvBGrHF+aYuKxTdB/hk7fJtMWD3kaZyoTRyP5OkmhNtGxX?= =?us-ascii?Q?qegpRAs4vApTC0jhf7VC2Vbl1N8KAxYGf3Yv/mjqAF14bL7OVZTKQjw/oq1r?= =?us-ascii?Q?LRA0bv8ptgo117N/SaSlhpe+bu41vJ6K0ye9ssoHB7nUO5JO9cb8V2uiGUe1?= =?us-ascii?Q?IsX/tdBYJ2tBvz2POvWKMp6JngMubApIUb60V1eBoAoGYdAc04A0qwGWF7Xn?= =?us-ascii?Q?m3GIUeI6jnEud+l0yBKR5p8FXcd0ynThoNfUql9+NhHe0WpH4GVFyr6zyJde?= =?us-ascii?Q?7caQF7JZ0OJzFg+w54rsCWqUg1vSfI5NpPZKOVnWOxpxDLV5nqUwYvAZGGRF?= =?us-ascii?Q?za16fWnYGv0ygHPcNWBCNFAsSuFdtIZnu5ZX6k7dGO0++rCdi1y1ZhsMwzqr?= =?us-ascii?Q?DpI4kSfLXs/zKJEYStJz0vBywTHk0x0AQwIA?= X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(376014)(1800799024)(82310400026)(7416014)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2025 23:28:54.9084 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e8924a8f-4e61-42a3-0e62-08ddef2f7a41 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000FCC1.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4374 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 Signed-off-by: Nicolin Chen Acked-by: Balbir Singh --- 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 ae23aacc38402..5c0b38595d209 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h @@ -858,6 +858,7 @@ 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 59a480974d80f..6097f1f540d87 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 cccf8f52ee0d5..0016ec699acfe 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3070,6 +3070,9 @@ 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