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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: tX2j93mJQvUaI84zyS4C10utpk+/CNk5/YUhDH6FqDOooG+AzZVnpnTY0174+6pztW23KBIdNCmb/H86XajaaTJjvAz4s4EOg8dsn5PEPlZsgbCYFxmq3PuCSWaAzRJdX63wEsKVWJwbdWk5fttEkUO4+pXRyo+w9TtrCO6KyLKhfnvpFRQPn9Me+gESmi3j7dbRaiBALh6DdeHTf7D/gPAyxx/0yGolY67W/yXxWI2dCOAEusZIYFw9BHfMn8VAA2k5tfmmYFO5ak9CxGXmLgqIqjZ4RmBzknETlIltrwrwiYvq5AoMFpc704oO1LFex1OLKEAdW7Ao/fgvXOQvyQ57L4Iz6TFUnyS3TbBsxnhh2ROusZaQDCbTbLq89kdoc4yB6f7Q/M7ZXZuEYMF5sZtOHml0FiqluUFzG9N853CwtYK5n4K7zR3qeF0QvSys X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2026 04:14:32.3482 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 29bc38ab-6a78-4b07-39e0-08df1d16ff9b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF00000204.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY8PR12MB7097 On 28-Sep-26 4:55 AM, Davidlohr Bueso wrote: > On Tue, 28 Jul 2026, Bharata B Rao wrote: > >> +/** >> + * pghot_record_access() - Record page accesses from lower tier memory >> + * for the purpose of tracking page hotness and subsequent promotion. >> + * >> + * @pfn: PFN of the page >> + * @nid: Unused >> + * @src: The identifier of the sub-system that reports the access >> + * @now: Access time in jiffies >> + * >> + * Updates the frequency and time of access and marks the page as >> + * ready for migration if the frequency crosses a threshold. The pages >> + * marked for migration are migrated by kmigrated kernel thread. >> + * >> + * Return: 0 on success and -EINVAL on failure to record the access. >> + */ >> +int pghot_record_access(unsigned long pfn, int nid, int src, unsigned long now) >> +{ > [...] >> +} > > This needs a EXPORT_SYMBOL_GPL(pghot_record_access) for any module based > sources. Ah I didn't see that till now. CXL driver would need that. Thanks will add. Regards, Bharata.