Re: [PATCH] mm: remove kern_addr_valid() completely

Geert Uytterhoeven
2022-10-18T07:38:35Z

On Tue, Oct 18, 2022 at 9:25 AM Kefeng Wang <wangkefeng.wang@huawei.com> wrote:
> Most architectures(except arm64/x86/sparc) simply return 1 for
> kern_addr_valid(), which is only used in read_kcore(), and it
> calls copy_from_kernel_nofault() which could check whether the
> address is a valid kernel address, so no need kern_addr_valid(),
> let's remove unneeded kern_addr_valid() completely.
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>

> arch/m68k/include/asm/pgtable_mm.h | 2 -
> arch/m68k/include/asm/pgtable_no.h | 1 -

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

Gr{oetje,eeting}s,

Geert

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

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