linux-kernel - Re: [PATCH v2 2/2] Compiler Attributes: naked can be shared

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Message-ID: <CANiq72kS_w7p3Xe9cDCjCA9j1u-zQ1-C4ZX7N8G+AbP4u7SG8w@mail.gmail.com>
Date:   Thu, 20 Sep 2018 01:00:41 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Arnd Bergmann <arnd@...db.de>, Stefan Agner <stefan@...er.ch>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Eli Friedman <efriedma@...eaurora.org>,
        Christopher Li <sparse@...isli.org>,
        Kees Cook <keescook@...omium.org>,
        Ingo Molnar <mingo@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Joe Perches <joe@...ches.com>,
        Dominique Martinet <asmadeus@...ewreck.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-sparse@...r.kernel.org
Subject: Re: [PATCH v2 2/2] Compiler Attributes: naked can be shared

On Wed, Sep 19, 2018 at 11:14 PM, Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
> On Tue, Sep 18, 2018 at 08:56:04PM +0200, Miguel Ojeda wrote:
>> Hi Greg,
>>
>
>> Since Linus/Andrew/you
>> didn't comment on whether you wanted or not this for 4.19, we are
>> assuming they would go in for 4.20. However, Stefan/Nick/... wanted
>> this for 4.19 instead, they asked me to extract these patches two
>> separately for 4.19. I let them comment further on the status of Clang
>> on arm32.
>
> If these do not fix a regression, I don't see how they would be ready
> for 4.19-final.

Ok, I will wait a bit to send v5 until this is sorted out.

[CC'd Nick, Stefan, Arnd: I just noticed the Reviewed-by/... lines
were not picked as CC].

>
>> I am going to send a v5 of the entire series without these two
>> patches, based on -rc4 (or -next, which one do you prefer? I would say
>> these patches should be applied early in the -next branches, so that
>> everyone is ready for the change, given it "touches" every translation
>> unit).
>
> That's up to whomever takes these into their tree for linux-next
> inclusion.  If you are about to break everything, then you might
> consider changing your patches so they do not do that :)
>

Well, the series shouldn't break anything (famous last words :), even
if everyone includes those headers. So, in theory, they *could* be
applied anywhere, anytime; but given they are global changes...

Cheers,
Miguel