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SubjectRe: [PATCHv5 05/19] mm/page_alloc: Handle allocation for encrypted memory
On Thu, Jul 19, 2018 at 07:05:36AM -0700, Dave Hansen wrote:
> 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().

Okay.

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

I cannot come up with any reasonable way to detect this immediately.
I'll think about this more.

--
Kirill A. Shutemov

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