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Mon, 3 Jun 2024 22:07:13 -0700 Date: Mon, 3 Jun 2024 22:07:11 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , Joerg Roedel , , Robin Murphy , Will Deacon , Eric Auger , Jean-Philippe Brucker , Moritz Fischer , Michael Shavit , , Shameerali Kolothum Thodi Subject: Re: [PATCH v8 02/14] iommu/arm-smmu-v3: Start building a generic PASID layer Message-ID: References: <0-v8-6f85cdc10ce7+563e-smmuv3_newapi_p2b_jgg@nvidia.com> <2-v8-6f85cdc10ce7+563e-smmuv3_newapi_p2b_jgg@nvidia.com> Precedence: bulk X-Mailing-List: patches@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: <2-v8-6f85cdc10ce7+563e-smmuv3_newapi_p2b_jgg@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN1PEPF000397AE:EE_|MN2PR12MB4191:EE_ X-MS-Office365-Filtering-Correlation-Id: a50a641c-df81-4d94-dcc1-08dc84543779 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230031|82310400017|1800799015|376005|36860700004|7416005; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Jun 2024 05:07:22.1370 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a50a641c-df81-4d94-dcc1-08dc84543779 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: SN1PEPF000397AE.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4191 On Mon, Jun 03, 2024 at 09:15:47PM -0300, Jason Gunthorpe wrote: > Add arm_smmu_set_pasid()/arm_smmu_remove_pasid() which are to be used by > callers that already constructed the arm_smmu_cd they wish to program. > > These functions will encapsulate the shared logic to setup a CD entry that > will be shared by SVA and S1 domain cases. > > Prior fixes had already moved most of this logic up into > __arm_smmu_sva_bind(), move it to it's final home. > > Following patches will relieve some of the remaining SVA restrictions: > > - The RID domain is a S1 domain and has already setup the STE to point to > the CD table > - The programmed PASID is the mm_get_enqcmd_pasid() > - Nothing changes while SVA is running (sva_enable) > > SVA invalidation will still iterate over the S1 domain's master list, > later patches will resolve that. > > Tested-by: Nicolin Chen > Tested-by: Shameer Kolothum > Signed-off-by: Jason Gunthorpe Reviewed-by: Nicolin Chen