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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?xrtd2nkaj2fHJhM2hjmRvDTukU+vPcm4/Qq1lLICnaV0yyQTI05muIN/TxcL?= =?us-ascii?Q?rwW6/5fScg3syNF9yOL5S80aBxSJADX7SReaCJAFJOXFrD4oR6MR1ORPtr3l?= =?us-ascii?Q?HPBIWa1vXX6Fm4odM3XB7YyKnDCyMHsZGX590BLRV0aJ7+HuZj6KbUHRqR9Z?= =?us-ascii?Q?9b/cRN5Ud+3JYlmK04edSHurjH63NzV4xHz0syWjYLsZSQPxDN7IYhUE6jrx?= =?us-ascii?Q?KncqyMIf3SejgHrqDXQNExoY14WOvuphnge4VdcwdpK5jIe5k+ShDG9+eyKy?= =?us-ascii?Q?MgFOc07V7Mfr/uurMrcgzTt3PCnWUbVXfJ2aPSQ8SXAzqqmtk2zGYS3ktcs+?= =?us-ascii?Q?QBrVSvBl0MJzRILi1pNHvqVAE6rAOMc+8PMiecR7F/sPHTcVHHro1lnTU0dz?= =?us-ascii?Q?6NyxKElgtxdJDk4AzMI2Puv1V5szPzdNF88KjDF55INMnIpcSeZFFZhcxJqh?= =?us-ascii?Q?GiyiBigIYDUtGlQDaGK+CSsdgRTfP0g5veLrZnnJV0pAFgqee4n9ASe+U0Sy?= =?us-ascii?Q?Ah1DNrK4deQCdbBq/bVRi+5fIiTj9ublqp3m6mBinuJUF1x0a0mr00MkednR?= =?us-ascii?Q?LJ8gCunFebRIzx4S9zrncYktXyVbVdORTD5AmsI3Zb9z0aGq6ZkYKT7ptvOo?= =?us-ascii?Q?5DJ8A6xG7O6I21iMTPzZGpCKevYb+6d4C93WhBk8bxCW5QNuMKwb3/P0dIrZ?= =?us-ascii?Q?KwOEEdg1O8pBlFhBcN3eMFo0zp0hpybICF1vTqXGicz9vX/YYz9kOsQuQOjm?= =?us-ascii?Q?8eTCKRXi79jGF7dwcanznaTY6ZOCeXSQgB80768MgOXJUbQ+F7aL+s09HxFc?= =?us-ascii?Q?4xXC7qNUX4evRpgQ6ImENvPkTi+rE3Nf0KKF1yFeINwqe8JmrSUWDM5lUyCh?= =?us-ascii?Q?F7VuCEEQ//tF8NnPZdpw1r8XUi5i1xD6Do7zcBhmGWcus36GLVsNKv+IBP8C?= =?us-ascii?Q?jAX+LJijRJs2PBjjeLh+ydmM1SByxfp3xXf7qCrSCAeFTyT9IA2LgBDrbC3n?= =?us-ascii?Q?rKYIXtC89NP0HDEPZZX8RAFnRqg0W9DaWq1SVX20gtBo+rH2KAXphi7CKvWS?= =?us-ascii?Q?xK9PAc2paBuge5woq/hjf/kFp70SilnE4Hj9toK09F7Yz+x3U8t+c6yHUsgC?= =?us-ascii?Q?Bsr2KXV2nIezWVPCVyjWrgjjF40qy1FIUOzbqmde33c0TXJImh0DFa2AYwtt?= =?us-ascii?Q?VjyWoQmIEQJXCjCWckE6MEndkvQnwfGJnkT40wZGnUVrwoB8LKD0cc2tFBIU?= =?us-ascii?Q?zuBYryd3OSEVWIAbMXA1sjkUZ4tBM0ImMtDX6g1xsevwbDOusBa2/YXp0xws?= =?us-ascii?Q?OLn2O6i/DbCpETNYmFcKNpGfScsaXntB5J3900NZ1UJud/w3d4AospKx5+W3?= =?us-ascii?Q?Dg8h1wMmht7ky17ui7fZxI0gAMCVp8s5yq6kNqISWhi/kwIgdqZmaxQb2DGn?= =?us-ascii?Q?rT2isK7MIU7ICmOtN70va+FjZnNd7exmif7kgnLB6UE6fs4R35UAsH00MUnj?= =?us-ascii?Q?dKVmLjE/zcByAxo/937G4saCe96PYIFipzwagMcpO9dsNMrXAHEJKcvCcxSE?= =?us-ascii?Q?2y7xOumnszY/ywYlb1eeLsX8UWt9IFmuL58ZdYHJ?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9bf6aff7-1ffc-471c-f065-08dba58cad42 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Aug 2023 16:59:42.5318 (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: dNEtHyXQzc+WYGAKzk5sif+ZhOCSpMhCu2DZ2RIkr/kNbEwKQfGOnnIGlnnAHvxP X-MS-Exchange-Transport-CrossTenantHeadersStamped: BL1PR12MB5995 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 25, 2023 at 09:55:52AM -0700, Reinette Chatre wrote: > Thank you very much for your guidance. Instead of Jason's expectation that > IMS would be a backend of MSI-X this will change to IMS and MSI-X both being > a backend to a new interface. It is difficult for me to envision the end > result so I will work on an implementation based on my understanding of > your proposal that we can use for further discussion. I think the point is that emulating MSI-X is kind of tricky and should be common VFIO code, regardless of what path it takes. So I would expect some library code to do this, entry points the vfio_device can hook into its callbacks (eg config space and rw of a page) Then the other side would connect to the physical implementation, sw,ims,msi-x,future Jason