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Fri, 24 Mar 2023 10:43:27 -0700 Date: Fri, 24 Mar 2023 10:43:26 -0700 From: Nicolin Chen To: Eric Auger CC: , , , , , , , , , , Subject: Re: [PATCH v1 11/14] iommu/arm-smmu-v3: Add arm_smmu_domain_alloc_user Message-ID: References: <7d26e897780bdc009b11bc0c0ddc7b755a769b24.1678348754.git.nicolinc@nvidia.com> <9700988d-ae86-06f7-33e6-f079722b63ff@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <9700988d-ae86-06f7-33e6-f079722b63ff@redhat.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000C981:EE_|MN2PR12MB4142:EE_ X-MS-Office365-Filtering-Correlation-Id: 3347bcd1-b1df-4ec2-7f93-08db2c8f4d6c 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:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(39860400002)(346002)(396003)(136003)(376002)(451199021)(36840700001)(40470700004)(46966006)(40480700001)(2906002)(356005)(8676002)(4326008)(6916009)(70586007)(4744005)(54906003)(70206006)(36860700001)(41300700001)(5660300002)(426003)(7636003)(7416002)(82740400003)(26005)(47076005)(8936002)(55016003)(40460700003)(478600001)(82310400005)(86362001)(33716001)(9686003)(336012)(186003)(316002)(67856001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Mar 2023 17:43:39.2864 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3347bcd1-b1df-4ec2-7f93-08db2c8f4d6c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000C981.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4142 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 24, 2023 at 04:33:31PM +0100, Eric Auger wrote: > > @@ -2893,10 +2863,75 @@ static void arm_smmu_remove_dev_pasid(struct device *dev, ioasid_t pasid) > > arm_smmu_sva_remove_dev_pasid(domain, dev, pasid); > > } > > > > +static struct iommu_domain * > > +__arm_smmu_domain_alloc(unsigned type, > > + struct arm_smmu_domain *s2, > I think you should rather introduce s2 param in "iommu/arm-smmu-v3: > Support IOMMU_DOMAIN_NESTED type of allocations" because it is not use > at all in this patch nor really explained in the commit msg OK. I will move it. Thanks! Nicolin