Re: [PATCHv5 05/19] mm/page_alloc: Handle allocation for encrypted memory

From: Dave Hansen
Date: Thu Jul 19 2018 - 10:05:46 EST


On 07/19/2018 01:27 AM, Kirill A. Shutemov wrote:
>> What other code might need prep_encrypted_page()?
>
> Custom pages allocators if these pages can end up in encrypted VMAs.
>
> It this case compaction creates own pool of pages to be used for
> allocation during page migration.

OK, that makes sense. It also sounds like some great information to add
near prep_encrypted_page().

Do we have any ability to catch cases like this if we get them wrong, or
will we just silently corrupt data?