On 11.02.25 03:37, yangge1116@xxxxxxx wrote:
From: Ge Yang <yangge1116@xxxxxxx> In the sev_mem_enc_register_region() function, we need to call sev_pin_memory() to pin memory for the long term. However, when calling sev_pin_memory(), the FOLL_LONGTERM flag is not passed, causing the allocated pages not to be migrated out of MIGRATE_CMA/ZONE_MOVABLE, violating these mechanisms to avoid fragmentation with unmovable pages, for example making CMA allocations fail. To address the aforementioned problem, we should add the FOLL_LONGTERM flag when calling sev_pin_memory() within the sev_mem_enc_register_region() function. Signed-off-by: Ge Yang <yangge1116@xxxxxxx> Reviewed-by: Tom Lendacky <thomas.lendacky@xxxxxxx> ---
Acked-by: David Hildenbrand <david@xxxxxxxxxx> -- Cheers, David / dhildenb
