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Mon, 27 Mar 2023 10:47:38 -0700 Date: Mon, 27 Mar 2023 10:47:37 -0700 From: Nicolin Chen To: Yi Liu CC: , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v3 0/6] vfio: Make emulated devices prepared for vfio device cdev Message-ID: References: <20230327093351.44505-1-yi.l.liu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20230327093351.44505-1-yi.l.liu@intel.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF000108EB:EE_|IA1PR12MB6354:EE_ X-MS-Office365-Filtering-Correlation-Id: 0cb0273f-d790-455e-734d-08db2eeb6af4 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)(396003)(376002)(136003)(346002)(39860400002)(451199021)(40470700004)(46966006)(36840700001)(47076005)(83380400001)(426003)(336012)(8676002)(70586007)(2906002)(70206006)(4326008)(6916009)(54906003)(966005)(478600001)(9686003)(316002)(186003)(26005)(55016003)(82310400005)(40480700001)(7416002)(86362001)(33716001)(36860700001)(41300700001)(7636003)(356005)(8936002)(82740400003)(40460700003)(5660300002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Mar 2023 17:48:04.6373 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0cb0273f-d790-455e-734d-08db2eeb6af4 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: BL02EPF000108EB.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB6354 Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On Mon, Mar 27, 2023 at 02:33:45AM -0700, Yi Liu wrote: > External email: Use caution opening links or attachments > > > The .bind_iommufd op of vfio emulated devices are either empty or does > nothing. This is different with the vfio physical devices, to add vfio > device cdev, need to make them act the same. > > This series first makes the .bind_iommufd op of vfio emulated devices > to create iommufd_access, this introduces a new iommufd API. Then let > the driver that does not provide .bind_iommufd op to use the vfio emulated > iommufd op set. This makes all vfio device drivers have consistent iommufd > operations, which is good for adding new device uAPIs in the device cdev > series. > > Change log: > > v3: > - Use iommufd_get_ioas() for ioas get, hence patch 01 is added to modify > the input parameter of iommufd_get_ioas(). (Jason) > - Add r-b from Jason and Kevin > - Add t-b from Terrence Xu This runs well with iommufd selftest on x86 and QEMU sanity on ARM64, applying nesting series on top of this and cdev series: https://github.com/nicolinc/iommufd/commits/wip/iommufd_nesting-03272023 Tested-by: Nicolin Chen