Re: [PATCH v5 24/33] m68k: Convert various functions to use ptdescs

[Geert Uytterhoeven <geert@linux-m68k.org>]

Hi Vishal,

On Thu, Jun 22, 2023 at 10:58 PM Vishal Moola (Oracle)
<vishal.moola@gmail.com> wrote:
> As part of the conversions to replace pgtable constructor/destructors with
> ptdesc equivalents, convert various page table functions to use ptdescs.
>
> Some of the functions use the *get*page*() helper functions. Convert
> these to use pagetable_alloc() and ptdesc_address() instead to help
> standardize page tables further.
>
> Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>

Thanks for your patch!

> --- a/arch/m68k/include/asm/mcf_pgalloc.h
> +++ b/arch/m68k/include/asm/mcf_pgalloc.h

>  static inline pgd_t *pgd_alloc(struct mm_struct *mm)
>  {
>         pgd_t *new_pgd;
> +       struct ptdesc *ptdesc = pagetable_alloc((GFP_DMA | GFP_NOWARN) &

0-day already told you for v3 that GFP_NOWARN does not exist.
Please try cross-compiling your changes:
https://mirrors.edge.kernel.org/pub/tools/crosstool/

> +                       ~__GFP_HIGHMEM, 0);
>
> -       new_pgd = (pgd_t *)__get_free_page(GFP_DMA | __GFP_NOWARN);
> -       if (!new_pgd)
> +       if (!ptdesc)
>                 return NULL;
> +       new_pgd = ptdesc_address(ptdesc);
> +
>         memcpy(new_pgd, swapper_pg_dir, PTRS_PER_PGD * sizeof(pgd_t));
>         memset(new_pgd, 0, PAGE_OFFSET >> PGDIR_SHIFT);
>         return new_pgd;

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds