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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?b/Vxsj6T7iLzZqiRFFtbkA5CEbvNJ+U/nM4qp72A4huht35eNNWUTsipK3S6?= =?us-ascii?Q?PRM1WWa8Md1v/w7X4Z0sS9Oc9vCbppi0iZC+QZTmm4IiPCKF3bViBYKcADiz?= =?us-ascii?Q?6jdXF8JKm8054GUf6M2z4afgXxsNM0ztaAZtT+CDMuzDmDdjw8mRUrVciX8H?= =?us-ascii?Q?xTG0yT2g3+pPOu138HbYEH8cPOIrMHtGIoo+/nubJqnMj+7uT2Wl83tpnBLm?= =?us-ascii?Q?eF4cyAPDk5gmxNeppYD5/4rdLIwBi8GYfS/C+bv7FwX+ooZKKwPyjmevaNHx?= =?us-ascii?Q?usznFO7wKahYR7Dx0njs16fyiehQuf0I+1gEG8NntPGMawown7cdzQf2d7hY?= =?us-ascii?Q?STny3e9Nzx7qhhkC9WH02rqTz5nKzI7iG+BZi9lNcijBayzU4H7Z0m65bHcb?= =?us-ascii?Q?IeNPlb5fOHR9eITHmZ7hN1QVA4BnD6TWj5urKMRyCilAiA12zP42KlZfw06S?= =?us-ascii?Q?qm9MfF8E4sXkubQa18P2Gyi5eL2nC6N7YhzM/fL9sepaWks8L0XWaU+xH6ff?= =?us-ascii?Q?ZRDzAKs6hV0QeTytz/ZbCiuvHNheyVm7RsNwL1LPQ/9HPg+LpH6ygF2DQJB4?= =?us-ascii?Q?wxiPhzKhME37BPeOZiNu7L0NJBAxOI0AAGzy1sXgOen6ra89ts0wOBir8fAD?= =?us-ascii?Q?OqwCbLjp4z+SQlLML/iRzMvfQ+DVsYEkJWb2EUKowAeiFBlRiowXj19O9cju?= =?us-ascii?Q?KCz1LQdsvpjcy6BVoyznVLPHNVsonO/JFTVazyO0rzN/As+SI/nKoYZaOL7Y?= =?us-ascii?Q?qlTMPMvZjmzhL2H/XoUiX1QlvQ4kGfpBVBlSk8T51Xg949GetvRMQOT/NY9Z?= =?us-ascii?Q?AtAxB7vKH/WdFmUFPDiNq0MKdaCRFReelCDxo9GMSJv1y+QVqt49OLMFjUnh?= =?us-ascii?Q?a7Mrk9Njcni66VLwp7uN2g5juPE7wDbeBlhQUk0rwhmS1EDbMcjVeJAJEcFj?= =?us-ascii?Q?f5NVkRhfKDUKrFpbDYDw72BOTuC6LbFGJmWldCEohEws0GbmuedKGvtB9Kud?= =?us-ascii?Q?fZUBYHZ2Txa3vjpVdO6O0pzSlWyaOkK8dLrV59MGYLpTJfstjwf1oPnjXkwl?= =?us-ascii?Q?wMdSXbiHk9zVwvuCZeI88tW2ZEb1JWDnH7Pw4b/NL+lFjV2hqjM2DhPvLELl?= =?us-ascii?Q?rdnzFFh7jbXnXSfKbpx+JyBZAZQEj3WHQ/tnwhQUOKtw8ZT+EKlLPMMI+zw5?= =?us-ascii?Q?VC1UjXK/sjIOAvQHOxQlDExPbneOFd6ErK0y1JkMHSeDnXQa8u1ebRJFcT/c?= =?us-ascii?Q?S45HyFZIZetCw/aSTNPKo24nI6XS027Fx4dDQ6vFtV1v5KDFaIW1AYIE0/xq?= =?us-ascii?Q?RyrRGykAxSUjDLBbghPptEvZGPMh7lTiszLk38Ym6gRaWlK8jJxKsOg5NLnF?= =?us-ascii?Q?9QVcEaLPDCbBykXwuZacavUgASlqdP3XV6ttJyjGSknwLjpERaT5FBn/2H+5?= =?us-ascii?Q?16KehtWPHx5AFwnNFYju/z4+Bos54zdsSIylIvQCa1zjNhC7mGdF0JuP84fw?= =?us-ascii?Q?zCZHY6J2WwCfys8qj59hyzOwZKRDeq6oaqe1nxYFhSR8HR+iAK2zWEhanlGK?= =?us-ascii?Q?Aa8wzJdR/g4HKTO8H+7holcehrfwgJixKBh8ismqZ//Jk9d/EHlxuciYjxBY?= =?us-ascii?Q?m9x9G59TnhhA0r/7lDGDth/Gx4NkJJ9Fp3ENy4SyJIJ5aAvcEo0MHkUS49OA?= =?us-ascii?Q?znwOSjhVBVLU/FLgbETpcy50zKVKlLF782OO5EREzJlBqNQ5?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 018dd386-f748-4caf-fc3a-08de942ad023 X-MS-Exchange-CrossTenant-AuthSource: LV8PR12MB9620.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Apr 2026 22:21:13.6290 (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: ZY4vcNKp1G0YxvhO2eYZ85DdNsKxyNNlHuip2paWjNv9uedh90aK4QmstVQjmn3S X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW5PR12MB5682 On Tue, Apr 07, 2026 at 08:08:51AM +1000, Alexey Kardashevskiy wrote: > > > On 4/4/26 01:08, Jason Gunthorpe wrote: > > On Fri, Apr 03, 2026 at 11:41:25PM +1100, Alexey Kardashevskiy wrote: > > > > > > > > > On 30/3/26 22:49, Jason Gunthorpe wrote: > > > > On Mon, Mar 30, 2026 at 04:47:44PM +1100, Alexey Kardashevskiy wrote: > > > > > > > > > What do I miss? Thanks, > > > > > > > > You can't tell where things start so there is no way to relate the > > > > offsets to something the kernel can understand. > > > > > > Reported ranges have BAR indexes and start addresses (with the > > > reported MMIO offset added), and the first reported range starts at > > > the first 4K of that BAR. > > > > I was told this is not the case, the first reported range can start > > anywhere in the BAR? > > This is what I am trying to clarify - if all ranges must be reported > (as some think this is what the PCIe spec says), then no, not > anywhere. > > pcie r7, Table 11-16 TDI Report Structure, MMIO_RANGE: > > "Each MMIO Range of the TDI is reported with the MMIO reporting offset added." I think the argument was something like it didn't have to report non-secure ranges? But I don't know, it was hashed out in some thread for ARM and then I know our folks looked at it and nobody pushed back to insist that every single byte of the BAR had to be covered by a reported range. I wouldn't take the sentance you quoted as confirmation, you need a sentance that says every single byte of the BAR is covered by a single reported range. Jason