linux-kernel - Re: [PATCH v3 15/20] docs: move protection-keys.rst to the core-api book

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Date:   Sun, 9 Jun 2019 11:19:28 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Mauro Carvalho Chehab <mchehab+samsung@...nel.org>
Cc:     Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Shuah Khan <shuah@...nel.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>
Subject: Re: [PATCH v3 15/20] docs: move protection-keys.rst to the core-api book

Hi Mauro,

On Fri, Jun 7, 2019 at 9:38 PM Mauro Carvalho Chehab
<mchehab+samsung@...nel.org> wrote:
> This document is used by multiple architectures:

Indeed it is...

>
>         $ echo $(git grep -l  pkey_mprotect arch|cut -d'/' -f 2|sort|uniq)
>         alpha arm arm64 ia64 m68k microblaze mips parisc powerpc s390 sh sparc x86 xtensa

... but not because we now have a unified space for new syscall numbers ;-)

$ git grep -w ARCH_HAS_PKEYS -- "*Kconf*"
arch/powerpc/Kconfig:   select ARCH_HAS_PKEYS
arch/x86/Kconfig:       select ARCH_HAS_PKEYS
mm/Kconfig:config ARCH_HAS_PKEYS

I.e. limited to x86 and powerpc.

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