Re: [PATCH 4/4] mm: drop HIGHPTE support altogether

[Linus Walleij]

On Tue, Dec 10, 2024 at 5:06 PM Arnd Bergmann <arnd@xxxxxxxxxx> wrote:

> From: Arnd Bergmann <arnd@xxxxxxxx>
>
> With both x86 and arm having dropped CONFIG_HIGHPTE support, no
> architecture is left using it, so remove the remnants in common code.
>
> It is likely that further cleanups are possible in the page table
> code but those are not obvious from the config options.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Mapping PTEs in highmem makes no sense to me, it's better
that we try other solutions to move away from highmem use
altogether.

Yours,
Linus Walleij