Re: [PATCHv5 18/19] x86/mm: Handle encrypted memory in page_to_virt() and __pa()

[Dave Hansen]

On 07/23/2018 03:12 AM, Kirill A. Shutemov wrote:
> page_to_virt() definition overwrites default macros provided by
> <linux/mm.h>. We only overwrite the macros if MTKME is enabled
> compile-time.

Can you remind me why we need this in page_to_virt() as opposed to in
the kmap() code?  Is it because we have lots of 64-bit code that doesn't
use kmap() or something?