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Date:   Fri, 30 Nov 2018 07:16:34 -0600
From:   Segher Boessenkool <segher@kernel.crashing.org>
To:     Boris Petkov <bp@alien8.de>
Cc:     Masahiro Yamada <yamada.masahiro@socionext.com>,
        Nadav Amit <namit@vmware.com>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, rguenther@suse.de, matz@suse.de,
        gcc@gcc.gnu.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        X86 ML <x86@kernel.org>, Sam Ravnborg <sam@ravnborg.org>,
        Alok Kataria <akataria@vmware.com>,
        Christopher Li <sparse@chrisli.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Jan Beulich <JBeulich@suse.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Juergen Gross <jgross@suse.com>,
        Kate Stewart <kstewart@linuxfoundation.org>,
        Kees Cook <keescook@chromium.org>,
        linux-sparse@vger.kernel.org,
        "Peter Zijlstra (Intel)" <peterz@infradead.org>,
        Philippe Ombredanne <pombredanne@nexb.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        virtualization@lists.linux-foundation.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Chris Zankel <chris@zankel.net>,
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        linux-xtensa@linux-xtensa.org
Subject: Re: PROPOSAL: Extend inline asm syntax with size spec
Message-ID: <20181130131633.GU23873@gate.crashing.org>
References: <20181003213100.189959-1-namit@vmware.com> <20181007091805.GA30687@zn.tnic> <20181007132228.GJ29268@gate.crashing.org> <alpine.LSU.2.21.1810071534220.7867@wotan.suse.de> <20181008073128.GL29268@gate.crashing.org> <alpine.LSU.2.20.1810081105350.16707@zhemvz.fhfr.qr> <20181009145330.GT29268@gate.crashing.org> <CAK7LNARmrdtyE7JRAdJH_zbfvD_cej+TGLh+5KfT20o538KUcA@mail.gmail.com> <20181129122500.GX23873@gate.crashing.org> <CF26ACBE-500C-47E8-B79D-E1ABE938031D@alien8.de>
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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@kernel.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