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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?2SX2RFzfi7kUDbM2L9K/KfykjoQhoRJ2/lz5tEbv0al+gmMorACLKAlLF7wy?= =?us-ascii?Q?NPQs5geRgkxR/zNBpj8A3v/l00pWQUsv46Kzfh2yHeVZWcw/10/kpm+mCLne?= =?us-ascii?Q?xx4VRp6iS8rNrnO/kDkLUkzSxPiBltN9W80gIHxlcWoNsiYLDoT0c9C/HbL1?= =?us-ascii?Q?Bo9TBHTUZ+7VRVBQOLaLJapAuDfGH8zo0wbppshkWDRJ6bK1ExD/tpaQ6Vyp?= =?us-ascii?Q?M7LtgJxhYlM6PxEuDUV/tlb3lqcwvQ5IDkprgfXAzc2vow9Yb/l/tBV9p3OP?= =?us-ascii?Q?g7ZP+IAIlGodv+j6OA0JfHbC5ABqkPXvB+PXIT6MB7W0P6ULtINxHU4yWX6X?= =?us-ascii?Q?u03PtyjuNKRXCnHpGoN5IuwZR+RWInXMvuUwulJyA5HVzprOnrzOhKbTGvyA?= =?us-ascii?Q?qLtdsSpR7F6e04VZ1DJRFvuJaVg8M4lw74PMzOUhpEL02onyFcKPmwYcQgjT?= =?us-ascii?Q?6COudLG5mPOqPd6XWwwNZI6mKDlAAtXrHua/XtYK8bJuJb9INTDrCcOuA+Qg?= =?us-ascii?Q?MrOC77LtwDrbI0HbSDqjGhBLr8VQD6IqUTnWR/lcZWyfTlksRd64NgwOsTri?= =?us-ascii?Q?apXjhI4uorpzDyQTU0WZ89ZeZQi9Mpg5tSvch/jtzhoHG0k3hz9qBDIpB89w?= =?us-ascii?Q?niDx7iWVILlwnzsFBqLM9KDgw3y6R73lnJ3jmRyamcJRSSRugdsYUe4pExk0?= =?us-ascii?Q?vzQctjkEhIm8QYgimtsX95ysZDGdMgccPcE46dsUQuO3ujcCUn3GKkvIukS+?= =?us-ascii?Q?YgnfaYuBTj9LgVJHK7dGVSdH16424iW2Fp9KBIGjTOUXGConoT60t7MBrCXu?= =?us-ascii?Q?CbGM8AnmhVrNQvRoEDKRyw9oSMYewxDNN+/ExpZdtzGjJ9/Yl7hhI/jGucNV?= =?us-ascii?Q?bI65uCoD1CDfG//f8yU9FWbg+qdNY3Cn9Gzt8MRMsQfE+p1shfqc215wi0zo?= =?us-ascii?Q?M159wFX9DZ0YCamVonIrsPGcAZUFtZHudbV5VtH8E+uk3ibn1y11DxiQT4GX?= =?us-ascii?Q?1swatE7AzbGSoY5JwaB4HrwA4I0UWSHxw6cyJoH9mvpLwovOh+iXTIERK591?= =?us-ascii?Q?z696S1/dZYdsybRsRxIQEx2kTg2q6BjGFs10p9tDz4capg8TWF8NdP6jPvGA?= =?us-ascii?Q?qs8df+m/hux+7cXtowUlgfZmyn24nTy74aHHvxkTR8aY7xt9Du+UONFIxjdv?= =?us-ascii?Q?mQ4J6Z9hsYknamE33xc7H2VUe1BUrlX5YqQVtaj1VvgKbl/l3FB5iTTrFW7R?= =?us-ascii?Q?dcE44IO4x1/YU7bSJHCJRfkC2xWTgucEWIyYbBB2rSyyoepZr0VbOVpr0w/i?= =?us-ascii?Q?7+YYQTJoOPIUx0pgV5tID/1nA0Mc5jf90VJ9GGUK+v1rLePabNvyNefPJGAu?= =?us-ascii?Q?uy207zXOa2PewUG+gBOJBXqMWjHMuMtn/LwrTa1tgj/PcIxKRFk/tqtTcqDI?= =?us-ascii?Q?f/dkR/zhg9miAwF/ArV3dp1Kgc2QrJLn3xY1SqCdBQ2hjzCXBOHLkZTUjjFW?= =?us-ascii?Q?am1ajgaTDAyQ7/Vzztk2Ek4rX2YS8+VBeCCfG+Odn4QJH/1evKeq7LMCcrFW?= =?us-ascii?Q?lIMYN2doMA/rJ4p3L7a+wBNgOlzPZzof5TkQfsPcTwqYE6ST5IXLegV7U4F2?= =?us-ascii?Q?8FLVTbFA67uztPrC3rWdWcpV60xkhOHqoKlQubQTtopeluoQaBCNxnWiLVtT?= =?us-ascii?Q?rZj0j6DNukb6vJtEtRwlMt3Q5BUzq25A4zw00N3Afd+k25c6?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: acb19f81-75f2-476d-29e7-08dee5228bef X-MS-Exchange-CrossTenant-AuthSource: LV8PR12MB9620.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Jul 2026 23:16:07.4009 (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: oulWE3ZS/Zrgz2KJoh83pbg0ki0PEI920M7+HotYQ0J5ZiTqiaanQZPpFR1fOlwB X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7713 On Fri, Jul 17, 2026 at 09:43:24PM +0000, Pranjal Shrivastava wrote: > However, looking at your approach, I think I can slightly rework my > preservation logic and instead of bloating the KHO ABI with physical > addresses, I could re-use your exact table-walking logic during probe > to parse the live L1/L2 structures directly from registers, identify > the valid tables, and kho/dma_restore them. There could me small > differences though, for example instead of memremap stuff, we'd have to > use the kho/dma_restore API (which can be done by passing some op like > the data structure writers we have?) Similarly, maybe reserving ASID/VMID > can be potentially re-used as well.. I think this will be true for all the iommu drivers as they pretty much all have this same kind of kdumpish adoption logic in one way or another. > for KHO), I wanted to start a discussion to see if it makes sense to > factor this common code out into an arm-smmu-v3-kexec.c (or similar)? Yeah maybe so It sounds great this helps the live update project as well! Jason