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Sat, 8 Nov 2025 00:08:17 -0800 From: Nicolin Chen To: CC: , , , , , , , , , , , Subject: [PATCH v5 1/7] iommu/arm-smmu-v3: Explicitly set smmu_domain->stage for SVA Date: Sat, 8 Nov 2025 00:08:02 -0800 Message-ID: <65c692221d1b1cf0e8df7329ba9183b92932c40c.1762588839.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: MN1PEPF0000F0DE:EE_|IA1PR12MB7589:EE_ X-MS-Office365-Filtering-Correlation-Id: 6b725529-cd4b-4383-7828-08de1e9e0297 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|36860700013|7416014|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?NhUYSMY3HbZ/TKrMOFZMWy3Jdzktw7fWVgZy1rxYgc1Tzg/VjSh0lpW0SL1u?= =?us-ascii?Q?+uAYIc7pC8A2RPgMd537sl+NdR/kboRaCBTm6C2Bn8IpYBPctCliMbMAIexh?= =?us-ascii?Q?Ht9cpjfd8kV9Ea17WbnnExeA4kugbJN9JYSqzjcXfP5yNj0S4ylwq6ricqX1?= =?us-ascii?Q?ZwQBXlhZ4PtIi7pLSC03p+rUBStaDiecDyGsF1VK/dtIBV1pJDc3gH3L0EJr?= =?us-ascii?Q?QGc8oN4yY9Z1e0OBHEjwvi0bAcSoCpRZOJUSnCS7ZfIzyti3dKsxR2vWmWNE?= =?us-ascii?Q?mP5ASshYSeYif4ZcsNShkIWALqQIr86jcpGPpj1qehoq7aeeznoZsNxrLjF+?= =?us-ascii?Q?CRro/VfIRS6adv3qSKp2CrogY+PjX4Ipv0VFlfbGAfnt2BJ9dlRqBTppqFhl?= =?us-ascii?Q?YbKVJtT2fa0dcomdO+srld7GfnkjpzB1qPtqcF+5N1wwdltUwMJB9NlmJDd/?= =?us-ascii?Q?FRByGVPzWXJV/ZzcdFhge/jncNFftCKsaDvFBA+PPGp0LD5uumIhIt2GpbB0?= =?us-ascii?Q?2HzR8bAZ37XRy1gSj4b7SIvdtw37ccLMY3bDUhMGOsG+iuKiAIEBMuCVaTP/?= =?us-ascii?Q?YNkI5Jqx3M3Qa94lt0fm56mQy9Xf/UG/EP+KVZAzPpBauEB+bQ82tLEn/ggd?= =?us-ascii?Q?kjqh+ravv1Ig8zA6d5EQlrKx3k9ox9v9WlBJ0dIOiXX8h2oxc4VB4bHyVJ1a?= =?us-ascii?Q?hKMiCMfT0R8RClkwzeqYTAr82DkNpw1gCOQAR5OEpbRtJcawJQBIYouGFGLA?= =?us-ascii?Q?fhbaFy3Nh0zf6btnKrQEDBLiOg2UxWtttL4Z8s4ZZ0AgmZqN8yOUbAZoHzEK?= =?us-ascii?Q?bhxmpwb6scvu5h98FOcKYaeU1rEClkPOJAIipzkZlGvxToS8hSu3nJl7+NAp?= =?us-ascii?Q?vAAuXCqFidhWI/vrJD0oZ/ijpIFEjxE9BQKTU1euudf58gSMD0x1nChAn0hW?= =?us-ascii?Q?cZQLNn1gix9Jh3s2M2IDsB4B1sMg1mnP1ogiYzYZaK4Omk+nBk9Q4/gwG0gY?= =?us-ascii?Q?GgVrkjsDREHnKsi1NkB0BbdyR5Dgpx/2AOnhQ/kVBm+dYxl2Y77/OFbWdxRn?= =?us-ascii?Q?xykge3edmNx6eT/GR9WUmkg1wCx2w6aXYzXTzzHCyLkcgsAxDl1rei8m9d+y?= =?us-ascii?Q?MtNL+arJX1uz+QQQBVgF65fImAgOJLYiK6Jg7FTJsEJifTNqnPtHpA/gqR9X?= =?us-ascii?Q?gZIdOdnvSew0EnKk8nfh5za2/bstJmO6YU4W6+yOJBU9jFLP7tmuMw2oSaFq?= =?us-ascii?Q?mQ52N1TymAmWHsutdKYstuwdZ2cvsrr7LZyP/YjDLbX9Z+MbitPAAwljx0Hp?= =?us-ascii?Q?8fp35ALuSjaQiUO+qfuRCUywUwz6njXQDTBK0NAW25dgG/OvjbsXfg/nuK/t?= =?us-ascii?Q?rAIv12BHw4mEg09jObDJleNgqoNj2kxbvn5C3cHhKdFLdDPAW93aE1sSHJMh?= =?us-ascii?Q?EXwczLBFLAhdHoYDhHthpT1jVgVbJ3RjHSywAGdqW6Z/ozfeODwMRaekE6r+?= =?us-ascii?Q?Fe7iZ6fQwIA0Y1+FqLuOsfPjfs+jdEfMl5k4XtweNxoV4z4guLCIkuxg2lEx?= =?us-ascii?Q?BGgCigKjt2UZIijDkbg=3D?= 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)(7416014)(376014)(82310400026);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Nov 2025 08:08:32.8418 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6b725529-cd4b-4383-7828-08de1e9e0297 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: MN1PEPF0000F0DE.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7589 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 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 2a8b46b948f05..0312bb79f1247 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -3064,6 +3064,9 @@ 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