Re: [RFC, PATCH 18/22] x86/mm: Handle allocation of encrypted pages

[Dave Hansen]

On 03/05/2018 08:26 AM, Kirill A. Shutemov wrote:
> kmap_atomic_keyid() would map the page with the specified KeyID.
> For now it's dummy implementation that would be replaced later.

I think you need to explain the tradeoffs here.  We could just change
the linear map around, but you don't.  Why?