linux-kernel - Re: PROPOSAL: Extend inline asm syntax with size spec

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Message-ID: <20181130131633.GU23873@gate.crashing.org>
Date:   Fri, 30 Nov 2018 07:16:34 -0600
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Boris Petkov <bp@...en8.de>
Cc:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Nadav Amit <namit@...are.com>, Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, rguenther@...e.de, matz@...e.de,
        gcc@....gnu.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        X86 ML <x86@...nel.org>, Sam Ravnborg <sam@...nborg.org>,
        Alok Kataria <akataria@...are.com>,
        Christopher Li <sparse@...isli.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jan Beulich <JBeulich@...e.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Juergen Gross <jgross@...e.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Kees Cook <keescook@...omium.org>,
        linux-sparse@...r.kernel.org,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        virtualization@...ts.linux-foundation.org,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Chris Zankel <chris@...kel.net>,
        Max Filippov <jcmvbkbc@...il.com>,
        linux-xtensa@...ux-xtensa.org
Subject: Re: PROPOSAL: Extend inline asm syntax with size spec

On Fri, Nov 30, 2018 at 10:06:02AM +0100, Boris Petkov wrote:
> On November 29, 2018 1:25:02 PM GMT+01:00, Segher Boessenkool <segher@...nel.crashing.org> wrote:
> >This will only be fixed from GCC 9 on, if the compiler adopts it.  The
> >kernel wants to support ancient GCC, so it will need to have a
> >workaround
> >for older GCC versions anyway.
> 
> What about backporting it, like Richard says?

Let me first get it into GCC trunk :-)

It should backport fine, sure; and I'll work on that.


Segher