linux-kernel - Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc

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Message-ID: <CAMuHMdW0VDJP39i510UEKy-a_aXwxWV=S2UZnNWnov4=XozWZQ@mail.gmail.com>
Date:   Tue, 29 Nov 2016 14:39:20 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Babu Moger <babu.moger@...cle.com>, Ingo Molnar <mingo@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Kees Cook <keescook@...omium.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>,
        Tejun Heo <tj@...nel.org>, Sam Ravnborg <sam@...nborg.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH v3 0/2] Ajust lockdep static allocations for sparc

Hi Peter,

On Tue, Nov 29, 2016 at 2:31 PM, Peter Zijlstra <peterz@...radead.org> wrote:
> On Tue, Nov 29, 2016 at 02:26:47PM +0100, Geert Uytterhoeven wrote:
>> On Tue, Nov 29, 2016 at 1:29 PM, Peter Zijlstra <peterz@...radead.org> wrote:
>> > On Tue, Nov 29, 2016 at 12:52:04PM +0100, Geert Uytterhoeven wrote:
>
>> >> Not because of platforms with not limited memory, but because of platforms
>> >> with boot loaders that have silly kernel size limitations, and start
>> >> scribbling over the DTB or even theirselves when copying a large kernel image.
>> >
>> > Right, that's the weird platforms clause above, and those can select the
>> > option.
>>
>> Their Kconfig files can select it. The users can't.
>> What about making it visible depending on EXPERT?
>
> Not understanding, why would a user ever need it? The platform knows if
> its has funny boot image size limits, no?

The boot loader does not come with the kernel, so the platform cannot
know for sure.

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