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Mon, 15 Dec 2025 18:10:00 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v7 1/7] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Date: Mon, 15 Dec 2025 18:09:30 -0800 Message-ID: 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: CY4PEPF0000E9D6:EE_|CH8PR12MB9790:EE_ X-MS-Office365-Filtering-Correlation-Id: dfe3efc9-c7d5-44c5-2d13-08de3c483e11 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|36860700013|82310400026|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?mKPrfxlMUBJIZFXHS71GBB8oOdqtsIFDYcHwNv307WlLJSJbgBWAHX4eRxK7?= =?us-ascii?Q?RyI9BpE88HBgsEeYXyKskoO0BtDEwUaqIutanY5zs9ZB9diokOWN/GXD+ou/?= =?us-ascii?Q?GmbQwKJItoSlRgp2EZukOjPe2HvgBjZyDQVkVmgMZ5DEh7UPTtU4ptUchOwg?= =?us-ascii?Q?gzcw7n8B7tHbWB1nBuR1YywAPda9IeTY7drINw30cfO26vDFUHUmNIrh5NKR?= =?us-ascii?Q?fcYulH3R4hIgxlKwe6f9D8ZAhkkWpf1Ah4nyQ9h0jIMt63AExBc0e+TGUnSi?= =?us-ascii?Q?fRHbmYw+ts4lvJh86uf/HTQTjsMrWqCW8K59xz9P/td5MNDCj8Tq9i3G2ffp?= =?us-ascii?Q?4Yp0coZMCmXXUdvxmcNdagGBI+sMo+nGCn2HQlyjHiXBrf9P+PtIVQ/WaPaV?= =?us-ascii?Q?i3SoFiboFy8kCCiGimKtQ8WfNtXFb6HeQuM0cwhuIQHP9ntToZwcKbLWCaBC?= =?us-ascii?Q?eKEa3xSGofqJzMgxDfN4Z+Izcsqhzr3yZ241/afblPI2vu0YDq2aIwOGxGiR?= =?us-ascii?Q?/O4PEldYWEJTw4S+rjYKrJFY8LLx68nj/3Ak8G/dj9ky91/q1ztAv5irsAy1?= =?us-ascii?Q?1uumfmZyXT9OumvwzyBB/0FS74iPuhXQ/0gBPnWW34FlZn/A2wT2Ywv39w6r?= =?us-ascii?Q?+0I7BDQeVgtIoWePHHljUu/b1q7HApn6fh1q+eYSbKXVe49bkZtUt1TFC08m?= =?us-ascii?Q?Ut+ueKE3Fvl+TeEIZC4pWzJhqROTIUvCPcXAyQKY8JNq3S0hneM/axxYE/cl?= =?us-ascii?Q?r/eAEjpHBUruOO+va8K8bGocuFqeGRhDIgvacyoVkw/Ej3K7wlNCYCeO9D4c?= =?us-ascii?Q?7/oT9vFojUXdHc+OLiJjoKFU7f7SqpmSj7r872lp6VjZVCQDVe/25j8upvO2?= =?us-ascii?Q?Qiw4RQ6b850ndb+HlKQvcPbbuEQmh/2dcZBeXv4mYRhzSXHiRucUq08+1MPe?= =?us-ascii?Q?wzukYVi5c+/gGWpGqdmHB07/+fHZnscVgxYMr4RfYtt3zgEqHQywNti23ywF?= =?us-ascii?Q?30HdmGDvDCVwtpziK7G7FEbsebxrExZ9+2lZz+4YIySQphecbgUq5qzmk7cQ?= =?us-ascii?Q?GRZ5sWo77XO7p7w4jRGcMDXUWizarSd/Sg89q8igA8yFYZpME6Qu1+0XNwj8?= =?us-ascii?Q?gLKAHDE7Wwf4CrZlgZUYaVy90gHydxnnW9QUshc3WOm5jZfIGeVO2xvYqpBe?= =?us-ascii?Q?q6JJ/NaPcdvFnSDEMalWhKn3cIzqGrq8oMBme45WsKXjRl0Of289tTqCgAM4?= =?us-ascii?Q?v0E3pXimw4i3WT67zmJwPKVdZNDdfLe6z7K5OhGMxf7vBD4oFDwNkjGSCZ8k?= =?us-ascii?Q?Zw/WI1tk7/iLkH+ZmJc5g4/s2epG+FrJF4BPsolXxz3a2vy5NbJH08PBNbx1?= =?us-ascii?Q?0Jye2wBz9ZESldDlsMq1I0NylLICwvKQadX2c53MFNS7FsnKqdpKV4Baxh73?= =?us-ascii?Q?aBBI/nBS5SH+c3e5b4Q4ozY6wYsf2t/BewQIwXg/uopOExIAHuzQoU1OOMKp?= =?us-ascii?Q?8wGoodQQ5PZ+6BeICU2Z/Gfj/dedxq6mvRBAIh7dnp5hi4cBctXveX5SXpx/?= =?us-ascii?Q?k2tOvtEgucyGeVL4I2g=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)(7416014)(376014)(36860700013)(82310400026)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Dec 2025 02:10:10.8755 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dfe3efc9-c7d5-44c5-2d13-08de3c483e11 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: CY4PEPF0000E9D6.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH8PR12MB9790 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 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 ae23aacc3840..5c0b38595d20 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 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 d16d35c78c06..9d9f24a08062 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3065,6 +3065,9 @@ 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