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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?ZNLFrO4VZZiZnzRqMEriaQCQIwFsShbrrMr2FQ+QwC42avm2YXWCLmMnvLO4?= =?us-ascii?Q?I4YV/MapRxCqE2OfD00jSNTt8Y8FdlTsvU2G0xbiEw+s3gOF2Ewvd0nnG8tk?= =?us-ascii?Q?P/iAt2z6Go9shug1/nZUI9mEWJH3U9e0y7rjHuCzOu3eu7QLDdv/p+cmVeDu?= =?us-ascii?Q?pSqqd0kMjLwTiazLft7Zx74H/54fMj/NEIN14mmwB7GRnXLvshDH6m0vQB5D?= =?us-ascii?Q?hy6gRmCxTBafwyivABwp2E+PMAg5qmvd6g83g5wd/iWWFswOHB9uJ5vRNRgb?= =?us-ascii?Q?7LaaXDv6x0qMyYHly3kyKzkOBX8tkbIH3b92cz9mA+ZtXO+NBVkSANfstXi6?= =?us-ascii?Q?z81kh9VRUx3UcZ2T+Rf5f6CZrQMA+MOpLH9zTCCieUPgPYlKGFCpz6uFwACu?= =?us-ascii?Q?dTBjRRb5Aa9RybzR/JCUeXwF6eKtD6+SJx2dDG089BpQJNNITkTmxVfX7rY3?= =?us-ascii?Q?Q4IU6Od5WDFMGg5RIkyMUeSwW/AZ1NX4M+TGiwP2rsyvuXWdTeCosWfWpIxd?= =?us-ascii?Q?XJjr8g63aXFsmt9vzq6if8Ojp3xjmHRVsoEQAwNtMps+6zWfDBxL1RHWwreC?= =?us-ascii?Q?+PN798LV5Eq85gB4kL/ER2Z4Zz0k228ygx6HJVNoqYmYSbNGVvXwvLX2+IIz?= =?us-ascii?Q?x9pkDkLzqrswuW29jGnL6MweTHqeRJ0yIRhyy4NO4Pu/BGcWfO32QazkPcWe?= =?us-ascii?Q?U317Y/bETESCXxEEWPCI1ADZiFSWFXBtOWLTgbz36hGX7NI7c3WxqdC51jeh?= =?us-ascii?Q?mTEOd5AFDM0R3F2KicfSdvwJ180LyYDHCSaVZ/DlWAf4A5wiu0TEfV1tnQPk?= =?us-ascii?Q?K/wMMp29ba5oGDN1wWV/i19Tmb2IO5AyXdXDJZIT/kVOnwkpLDutjrLCkz7j?= =?us-ascii?Q?aiS3dRe9rrxNXS4Q3I3GudnyjvxNM/2SD8gZzjh7RldtxJuf+id1nsqQ2nG1?= =?us-ascii?Q?fPX/LMq3Y8DVx6VQQDtMRdLj/txs82DYmMkHujc5PwxpCDmP9aCtI8YZ5m7I?= =?us-ascii?Q?yzafZYh0YWCg9D1r2++XxWoeN55aNOs3d2N+FKmYoCo4LnQO8VvHOfsRa+tO?= =?us-ascii?Q?iyOFnZevIYhPXSnElbbUDMDOpb8qeq9ZRjbxIZ6NqOJ1ydLrWN+NXTodxga3?= =?us-ascii?Q?bKJIm4+/Ubdv3k84Ss5E/1CAdujC2IOqj4xnhJzp4EKj6UqWRzn50F8BsT60?= =?us-ascii?Q?CkyhaxSujF7yPhcqtnHVXlQeDnw0hi+qvRtyYFaieLPwPSu9MGgrUXDsZYLJ?= =?us-ascii?Q?ER3bk6RFWHpexqQ2QFuuwQvCBVE/3bQEy/F2AMJL3X/jG2GW9dN8GsoaF6Yp?= =?us-ascii?Q?C1YIN4YPF9EvCK94de2QeqyGNJBpQDasRWcl7S5axUum+geLY3FWq8GkMuMX?= =?us-ascii?Q?dYldXJzSZvIBeFT6UlhCTuWSYqDalQS83wFWX0+plmuJuPYTmAB2x5pSdZ/I?= =?us-ascii?Q?7keL4A8AXrtsADF9keOO811Th2D43+IB?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 4d9ae89f-bf99-4c95-6f1b-08da06918aa4 X-MS-Exchange-CrossTenant-AuthSource: MN2PR12MB4192.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Mar 2022 14:38:59.4747 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 6kFSrRY+UxUMTcejoABIPYTfYn6CpAIysUNDgs2aEqjfpi949C4Yn8YboPDxVSrC X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB2957 Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Tue, Mar 15, 2022 at 09:49:01AM -0400, Matthew Rosato wrote: > The rationale for splitting steps 1 and 2 are that VFIO_SET_IOMMU doesn't > have a mechanism for specifying more than the type as an arg, no? Otherwise > yes, you could specify a kvm fd at this point and it would have some other > advantages (e.g. skip notifier). But we still can't use the IOMMU for > mapping until step 3. Stuff like this is why I'd be much happier if this could join our iommfd project so we can have clean modeling of the multiple iommu_domains. Jason