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Tue, 25 Nov 2025 17:10:37 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v6 1/7] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Date: Tue, 25 Nov 2025 17:10:06 -0800 Message-ID: <479dc34a38e05ab3c88fc55703c4286a5233e7a0.1764119291.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: SA2PEPF00003AE6:EE_|SJ0PR12MB8615:EE_ X-MS-Office365-Filtering-Correlation-Id: d786c05c-a5bb-4d8a-68e9-08de2c88a636 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|82310400026|7416014|36860700013|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?yhKi3cSxowA2VagDuNl4bvUNoW9MWFBXDATmLO5XK/SoPFblGouikWoecg1F?= =?us-ascii?Q?SCdfgT0KmCaYcUT/1s4HIMjTX5hevkQRP34PG+E+zoryzxaZDX+UzUt7Q/sE?= =?us-ascii?Q?WhNi12fEce4ZEcPhDv4462s09xzWb/ySENVXgJcik3Ic5WZyH/fDyiPHHc7e?= =?us-ascii?Q?Rks29Xm0Zihnfq9ZcEKGpd99xAOwjJp5c7t5n97LQB8Buu2VnSP0xNdVZVgI?= =?us-ascii?Q?vHS3vF+FTVrqGFS3E4umFf7G+J+CnTW2olJcGBDRpr7E/W7lx0xIv1sJYOdP?= =?us-ascii?Q?NCSUe6r2RbcPMtFBo84Kvhw2E/LtPqN8bPPeFSPz+8yzkXXJxjqe3TBOfIFj?= =?us-ascii?Q?8MrPyiXZqwmtK9lUG2uWqCUC5j4chVl0JLpm9QwYngUhYa3VG4ZMSf4QgrO2?= =?us-ascii?Q?/Txj901N8CM10NloHWXuZItVbq43SucUaFGf7tA7Nrl+NzQ86pR0p1zP1qkG?= =?us-ascii?Q?W0XXCOA6dWXS39NBfz7yNmwlG6yYDNVnT84uGtSCYTwNcAVGi2sQVR+h7emQ?= =?us-ascii?Q?vhH/Sej5MOTjSuDAeikv5VyGXQlvLdk+3pUWF1dH+lVvfOXYoxmAb5SQDu0Y?= =?us-ascii?Q?F8HpQsnxjKsTCm2NVDCadLo1lttHgiaQOa9Eeb16NjxIOHqxS/08bJISE8d3?= =?us-ascii?Q?1aLiB6D1EC6T9C2EJ7+GDp9IjCH+VAfNPR0ittZljk3GYMkKhyq7fxmOZ+gJ?= =?us-ascii?Q?WxVJ8JGWTXCkbRx8qEUy7pxXILwkuUGdOw6o8RpxNwx2dajCvsfRemmOPGet?= =?us-ascii?Q?x8Rs1ylZsguwmEroRF/blQYtE8aJ8N1UenLco0TfhJSW4IoZpTVOwkqXR/CC?= =?us-ascii?Q?g/IwxDUIDblDphwmuKI+ycjKh3v55QemZkzuBjmRqDnUFRDJ4s5OPODTGqdj?= =?us-ascii?Q?Oxz0Gt6xdCP9Az68ekcpEkhYgzuQulqRsV2dVwhPdp5gYb7QclqtWctj4bdI?= =?us-ascii?Q?FRtFRPW6Cb0EqydLzGzWkmNGhhm0ruxArFbyrCApTaw19gt0SU/LQ08i38Mu?= =?us-ascii?Q?Usf5G0oalqp/QtL/oFB9aV7eCbB3Q/NpG8zVy3P9EbTuGAw2F7ZpScJZ8+Yv?= =?us-ascii?Q?F3MwTy8lJW3HZ3+5/oOLQ5P0C6gVBKAqUIWaggk9gbZARvKL2F1l6QggGb28?= =?us-ascii?Q?xXSrawTHQu0BNXLxvCae/UoOMQ7JCbgm4LYbRqPw+SHHduY1zKLYgiAIWr+B?= =?us-ascii?Q?zD5Hz1eX+Pm/fzfgdZrf0oMZd3GcDub4Bs2CtGW7n1a8scuB52t6gV+SJKPE?= =?us-ascii?Q?yS9s51Hh2jjPObFCApGfkpEwizX2fqehTgj3CHIDrAO/+Cyou2nMYztl6JKz?= =?us-ascii?Q?/LuxCqy+SHgRVLdBE7a781woMr+bPHV7ApXWmDSk+YEe4IwL79tN/WZ1yJ9H?= =?us-ascii?Q?ovb4ZSHpQqMmoWMQ5QLKF7sKnbWD8FQXHWE5MsnjkeZjbB6eoB+386HgyyAb?= =?us-ascii?Q?V8FeGrD9USa0N7C3K8Zzo00EiKMHw/Rid5LHO2146HzHqgfiYZM4MxO4IRBr?= =?us-ascii?Q?IoxWnl+qEFtnwNmhqVDbkvyapbpDAFUAM4TILa7h3eZGOL1dw1EKGbeMuh+D?= =?us-ascii?Q?G7woHKB5fAg2EfoLe74=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)(376014)(82310400026)(7416014)(36860700013)(1800799024);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Nov 2025 01:10:54.7488 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d786c05c-a5bb-4d8a-68e9-08de2c88a636 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: SA2PEPF00003AE6.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB8615 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