Re: [PATCH 2/7] xen/gntdev,x86: Remove apply_to_page_range() use from module

[Christoph Hellwig]

On Mon, Apr 12, 2021 at 10:00:14AM +0200, Peter Zijlstra wrote:
> Instead of relying on apply_to_page_range() being available to
> modules, move its use into core kernel code and export it's
> application.

This doesn't exactly look great, but at least it contains the damage..

> 
> NOTE: ideally we do: use_ptemod = !auto_translate_physmap &&
> gnttab_map_avail_bits and remove this hack.

Given how much pain the !auto_translate_physmap case causes all over
the kernel I wonder what a realistic timeline might be for dropping
support for this case might be..