Re: [PATCH v3 13/34] m68k: Implement the new page table range API

Michael Schmitz
2023-03-06T23:01:56Z

Hi Geert,

On 6/03/23 20:21, Geert Uytterhoeven wrote:
>> Are we certain that contiguous vaddr always maps to contiguous paddr?
> For a general __flush_pages_to_ram() function, that would not be
> guaranteed. But as this is meant for folios, it must be true:
> https://elixir.bootlin.com/linux/latest/source/include/linux/mm_types.h#L320

Thanks for explaining - that just leaves the problem of cowboys like
myself abusing __flush_pages_to_ram(addr, nr) with nr > 1 for something
that isn't a folio. Maybe a comment 'nr > 1 only valid on folios' would
help ...

Cheers,

Michael

>
> Gr{oetje,eeting}s,
>
> Geert
>