linux-kernel - Re: [PATCH v2 2/2] mm: provide a fallback for PAGE_KERNEL

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Message-ID: <CAMuHMdUJTKqqWzFi594_y_F1HdONr3+FOSTzg-n0ogoroFUqpA@mail.gmail.com>
Date:   Thu, 10 May 2018 09:45:56 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     "Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Matthew Wilcox <willy@...radead.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] mm: provide a fallback for PAGE_KERNEL_EXEC for architectures

Hi Luis,

On Thu, May 10, 2018 at 3:44 AM, Luis R. Rodriguez <mcgrof@...nel.org> wrote:
> Some architectures just don't have PAGE_KERNEL_EXEC. The mm/nommu.c
> and mm/vmalloc.c code have been using PAGE_KERNEL as a fallback for years.
> Move this fallback to asm-generic.
>
> Architectures which do not define PAGE_KERNEL_EXEC yet:
>
>   o alpha
>   o mips
>   o openrisc
>   o sparc64

The above list seems to be far from complete?

> Suggested-by: Matthew Wilcox <willy@...radead.org>
> Signed-off-by: Luis R. Rodriguez <mcgrof@...nel.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-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