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Wed, 12 Jul 2023 18:57:32 -0700 Date: Wed, 12 Jul 2023 18:57:30 -0700 From: Nicolin Chen To: Michael Shavit CC: Will Deacon , Robin Murphy , "Joerg Roedel" , , , , , , Subject: Re: [PATCH v4 05/13] iommu/arm-smmu-v3: Use the master-owned s1_cfg Message-ID: References: <20230621063825.268890-1-mshavit@google.com> <20230621063825.268890-6-mshavit@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230621063825.268890-6-mshavit@google.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT040:EE_|PH7PR12MB7114:EE_ X-MS-Office365-Filtering-Correlation-Id: ca0d5150-9eb5-4779-e20c-08db83448d89 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 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:(13230028)(4636009)(376002)(39860400002)(136003)(396003)(346002)(451199021)(46966006)(36840700001)(40470700004)(8936002)(8676002)(41300700001)(54906003)(55016003)(40480700001)(5660300002)(2906002)(316002)(4744005)(6916009)(4326008)(70586007)(70206006)(40460700003)(426003)(9686003)(33716001)(478600001)(186003)(86362001)(336012)(82310400005)(356005)(7636003)(47076005)(82740400003)(26005)(36860700001);DIR:OUT;SFP:1101; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jun 21, 2023 at 02:37:17PM +0800, Michael Shavit wrote: > Insert CDs for STAGE_1 domains into a CD table owned by the > arm_smmu_master. Remove the CD table that was owned by arm_smmu_domain. > @@ -718,10 +718,7 @@ struct arm_smmu_domain { > > enum arm_smmu_domain_stage stage; > union { > - struct { > struct arm_smmu_ctx_desc cd; > - struct arm_smmu_s1_cfg s1_cfg; > - }; > struct arm_smmu_s2_cfg s2_cfg; > }; So the arm_smmu_domain looks like an object representing either: 1) a CD table + (if !IDENTITY) an S1 IOPT for default substream 2) an S2 IOPT I wonder if we need something like struct arm_smmu_subdomain to represent a substream, because now an IOMMU_DOMAIN_SVA domain is represented by this struct arm_smmu_domain too, which is neither of the two cases in the list above. Thanks Nicolin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel