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Thu, 27 Feb 2025 10:58:24 -0800 Date: Thu, 27 Feb 2025 10:58:23 -0800 From: Nicolin Chen To: Yi Liu CC: , , , , Subject: Re: [PATCH v8 05/12] iommufd: Mark PASID-compatible domain Message-ID: References: <20250226114032.4591-1-yi.l.liu@intel.com> <20250226114032.4591-6-yi.l.liu@intel.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20250226114032.4591-6-yi.l.liu@intel.com> X-NV-OnPremToCloud: AnonymousSubmission X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EDD6:EE_|SJ0PR12MB7083:EE_ X-MS-Office365-Filtering-Correlation-Id: db3cd660-e8f8-4b0b-01fd-08dd5760bef4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|82310400026|1800799024|376014|7053199007; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?AeOo/BOZrZ9ZPAsN5nKqfdIpyO8rT7iUPBCRTeJ6Z5aqtlYasfMpD7Q5nOFW?= =?us-ascii?Q?uPzX8Mwnd2ISB0rYmKmHCSHXhSas9dRDAA9KZcdrdUSIsxy4bwGZ3MMM0VKf?= =?us-ascii?Q?jKnzrUuFSi0DjsTh2bYk+a1ovTm5sk6N154Kn9/jw437uL1cpOca9kpGIdct?= =?us-ascii?Q?gwurgcdPj6hh0iELB2M4DJXhNF1Yvw1xfvYxXbu+pvlBwzx+vXvcp08ec7Fk?= =?us-ascii?Q?e4AsSVg1f3YOyg5INbMdAgGWD7qMy8cLXYFr4tPQKxmH916SakAPHP0y5d9d?= =?us-ascii?Q?ptt4ZqTfPr4MVEjPDT/8WvSgU9ttdh/SlVon+bsV+CSnxNuvDxXLEcq2SHGQ?= =?us-ascii?Q?pfZ1iR4CfbsXiKsGZCXddCGOvYgUxQQ7T1FeRLAhWvGsgBv9zL0Lc5nIwe67?= =?us-ascii?Q?8R+LGOMzRqikfSRl6v36WeK4gdVafr54iJuSKLeFaHhaLIwRlB/tgz0VFofc?= =?us-ascii?Q?xBVeesJGogFwFpL2x0d19wSZJPZ3WSXyh1WdUCKmrh1TH8zJz/xvi/vfEGVf?= =?us-ascii?Q?U89M1C/Nrb2cYFgRbImX/ZjlGKXocJaJhQJFEcLJ3ptNvyAd0qaWugwzuEPM?= =?us-ascii?Q?1sFS6rBkki5vW8lSxc4Qr87ceqe0eLyMmYgOKjBCwlX16U1Kn2ERxqfnnNgH?= =?us-ascii?Q?I/52SOBo5MSf0rCp/YX71cLJnoOH5aKl/SXtwZ7EbWpP2qHb8cGk1yXWjLxX?= =?us-ascii?Q?uJRl758bimozwvLJC+yY5Gm114LBjoQQu6xuH8UVAxvvDlZF75LG1At2Qj4S?= =?us-ascii?Q?upFRvTKc2fhZJx9vwLmfXTuk+iqvQCsFvIWhgD8Qky9UdZBjhBzfxqgqPHz0?= =?us-ascii?Q?0AXD4ik9zVodbKQbfSsuwcCicPPykPHT09vxNhjVPMNsPbKZ9ywBJkb/2tDT?= =?us-ascii?Q?Fvq3YE4Mq2ZSTSkTJL67dntG/sSQvjQPj8VW66ElT79jT58DuK0b005m1zeT?= =?us-ascii?Q?/e4o7h7mO+1lwMe43lbPCbVkemgA21z/uOjE/MG/5ar5KocMlqm9SKh/LGxF?= =?us-ascii?Q?uHV8SG5PkP/TXUTm4gDbPp+2nRlZOA5+/qkabSgz6S06PGKAXFUJae0dHdLF?= =?us-ascii?Q?IWg+MwBBTfOM5V2itiDfrXoPCPtR1Z3eIY+QtU8xYf9i7BifTifeB2AIR6uH?= =?us-ascii?Q?DN1XKOKb3rSnqK5lmiRj6NqoTUP8dgwlx3H92FonsjZRu/vH7LRCYGzMfXD3?= =?us-ascii?Q?ZKYckJzkMPzo3IFe1d3YrQP0xapuPKTdSlkdzUQJ8HVi7murWTTnEaA5as1J?= =?us-ascii?Q?XJ/zgxsVnaH8saD0bfEa5pkJtixw5HwoJWT511Z0tIM1sNpIS+0eA0Q9RDCL?= =?us-ascii?Q?TyIY5VgU43rwZcW4c9cREy3JBmsjDhT3R4uNOm5bTmsk48LDpuho8P0fi+GU?= =?us-ascii?Q?3hac6rBM2zx1iKzeSjqK14Gj7NoTuehVQjxt8hoCaxJtbWL56aK7XUdtuR72?= =?us-ascii?Q?7p+C1J5keCd4V1kmWSCCd7pJXfO6DEP6z22dDmKfwn1MeijqvGBJI+DMAapH?= =?us-ascii?Q?FYrJwDSrmtWBuHU=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)(36860700013)(82310400026)(1800799024)(376014)(7053199007);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Feb 2025 18:58:38.7523 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: db3cd660-e8f8-4b0b-01fd-08dd5760bef4 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: CY4PEPF0000EDD6.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB7083 On Wed, Feb 26, 2025 at 03:40:25AM -0800, Yi Liu wrote: > AMD IOMMU requires attaching PASID-compatible domains to PASID-capable > devices. This includes the domains attached to RID and PASIDs. Related > discussions in link [1] and [2]. ARM also has such a requirement, Intel > does not need it, but can live up with it. Hence, iommufd is going to > enforce this requirement as it is not harmful to vendors that do not > need it. > > Mark the PASID-capable domains to prepare for adding this enforcement > when iommufd PASID support is added. > > [1] https://lore.kernel.org/linux-iommu/20240709182303.GK14050@ziepe.ca/ > [2] https://lore.kernel.org/linux-iommu/20240822124433.GD3468552@ziepe.ca/ > > Reviewed-by: Kevin Tian > Signed-off-by: Yi Liu Reviewed-by: Nicolin Chen