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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?k6pKXTxW+ltA8nSIxzihH4SzSnKE55QKEUfZGww6P7DKYjl0UqrlI2UfuK16?= =?us-ascii?Q?PmhT6qRWiUDCmdmBuuSymrVjhMb8/ds6QI6tFQZqUSa3RlITlu80J142r32n?= =?us-ascii?Q?53Z47mQKT4xqle4DPuLpwg686HXlmFXUXRUATIoriCtRZkkvxTnzhiaP2DY0?= =?us-ascii?Q?2vjQAgcuCzkuHFeWYJg/0OeMo1P0LdX2srFeZoX9SS+fGEmZHJVRbcRBm057?= =?us-ascii?Q?vwsw6yjGRmf8fNpgWXL3IucTzPjdGh5O7UZSVl+B0vk303JKazEaxcts6nGv?= =?us-ascii?Q?eEPRMQm0z0xvivo9KP+Bm+YUfLDKCgdxsfD2FJlRHbY8s3cO6aRBdxeNIifh?= =?us-ascii?Q?5mfpMiUot0KB1PJdNH65D/gtwb7DBc88ZNNf5QFhdG2xfzjAKENR+UWH+zKU?= =?us-ascii?Q?AxtGYI/lfEVJXiT7svdaTlPB7DdHQspwT4tkdLNTNZFl2gg61TuqcnuDHOS6?= =?us-ascii?Q?tKzRfmZNIozDMIyPJ1RLeVqAwf+NE1bOolbB0EtpQsHkv6aGnDm2F21ApE1a?= =?us-ascii?Q?5qXND3D7kuJgCgF+H9MQfHcJpzA/xACe6Iin1WW9MyT/AiWGkXBnaLz49WiD?= =?us-ascii?Q?qlUcGqaCvnOd3YN1AYPdSsOIG8/1VTuwlnqAry66df25CmqC4ovVi+98/Aec?= =?us-ascii?Q?6/RbUUPw8K9EzvsO92QkJ6z5v2KnZ4gGK0+imS4YDpvzuMQpmA+zf7k3Cpro?= =?us-ascii?Q?OfdACLRY96+3Ulp3cGIUxy98jgJzvFBaNcarNUk9d4p7cRm17QrFvr877BEz?= =?us-ascii?Q?Hk+SCK+eo1QPsBO/rxj90ATPk266Zd7U24TZMg4aiU1d6yJeXRKQTjBfB1cW?= =?us-ascii?Q?GVW9n0sMIFv8g5LXuokGegQUqqoqYe5BUrCrzIN/3Y017zVmY/LxrzEbvMOv?= =?us-ascii?Q?wKkB3tQpgb6ZILSpgifnIHIbHmtM4ZRXqbaFS3A3FK6BZVQUcjZH9eP0xGKG?= =?us-ascii?Q?ygJgQkYIOQvrIqsj6D4+Wt0VGN5wQHCb1JSWzcSs/R2AnQWSmZvwsBkY3142?= =?us-ascii?Q?rUlbQSyQS5Kq65n/1lbdoOulOV9a6CboWIYGHCHoIEysNDa3gXg/27wNtepk?= =?us-ascii?Q?Of01/PcBxyN4Xqrn7Vn7sUtVYHV7gGzjdOIZ9EYV9k25xW/YwjESRETyWtiM?= =?us-ascii?Q?CqhmpR2yOIxfQ8oaIV0ePjEXoPzN8sYgFgicwyZoRe/fo7/mpQQC9plUFV5X?= =?us-ascii?Q?K9QYBzFrB5G6hC2L4nRIRVEbNdMUuVedXcIQWyJ6BrTgpfYDdC89ywge9uV1?= =?us-ascii?Q?iLyUpUDuoyUoKSlU4/Y9onLHo2rzx+plL9FFpzIhffP4Rd+GNBerBRwlaLkc?= =?us-ascii?Q?Fj30lcvOb8AnE2OajA7yN9fYsdKv4pb3RLxhbpCNTe8FaBJOXnZbQ5yBpyrS?= =?us-ascii?Q?jE0plZu5B15d1LC8yGtpqjuP2MKDISfxUjjSrsbVqeGSbVGOt5pAtrtyf9Yz?= =?us-ascii?Q?YeW3sHqYqYgugMRBY0YjxgsVbNjETjnJgTPHuzRO+/nadrL/N93TTrqNRe55?= =?us-ascii?Q?6/DjKh9lsaLE8Zh9Gu0HXlAKUZSTBTLxXxNmKkBr60eWNnrbpK/U0aiE9Bf0?= =?us-ascii?Q?cOIg92EPW3kJ+73YS2oaGTOR95BG2p3tVLLa1tDw?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: fcda6154-e116-4491-99c7-08dd4b8cb3fd X-MS-Exchange-CrossTenant-AuthSource: MW6PR12MB8663.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 Feb 2025 17:43:04.5053 (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: 0P8Jj8OH+WGU64qtS4cFL034ya9n+OiNd7/9MkzdFHwZT/PxjorcgP9YJm7OOU71 X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB8221 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250212_094309_820111_DECE1FF1 X-CRM114-Status: GOOD ( 17.15 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Feb 12, 2025 at 06:39:06PM +0200, Mike Rapoport wrote: > As I've mentioned off-list earlier, KHO in its current form is the lowest > level of abstraction for state preservation and it is by no means is > intended to provide complex drivers with all the tools necessary. My point, is I think it is the wrong level of abstraction and the wrong FDT schema. It does not and cannot solve the problems we know we will have, so why invest anything into that schema? I think the scratch system is great, and an amazing improvement over past version. Upgrade the memory preservation to match and it will be really good. > What you propose is a great optimization for memory preservation mechanism, > and additional and very useful abstraction layer on top of "basic KHO"! I do not see this as a layer on top, I see it as fundamentally replacing the memory preservation mechanism with something more scalable. > But I think it will be easier to start with something *very simple* and > probably suboptimal and then extend it rather than to try to build complex > comprehensive solution from day one. But why? Just do it right from the start? I spent like a hour sketching that, the existing preservation code is also very simple, why not just fix it right now? Jason