linux-kernel - Re: [PATCH] Use gcc alias instead of assembler aliases for syscalls

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Message-ID: <20130806074017.GB27005@ZenIV.linux.org.uk>
Date:	Tue, 6 Aug 2013 08:40:17 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [PATCH] Use gcc alias instead of assembler aliases for syscalls

On Tue, Aug 06, 2013 at 08:42:01AM +0200, Andi Kleen wrote:
> On Mon, Aug 05, 2013 at 10:59:49PM -0700, Andrew Morton wrote:
> > On Mon,  5 Aug 2013 15:09:35 -0700 Andi Kleen <andi@...stfloor.org> wrote:
> > 
> > > From: Andi Kleen <ak@...ux.intel.com>
> > > 
> > > Use standard gcc __attribute__((alias(foo))) to define
> > > the syscall aliases instead of custom assembler macros.
> > > 
> > > This is far cleaner, and also fixes my LTO kernel build.
> > 
> > I wonder what gcc version this was added in.  Seems fairly longstanding.
> 
> Seems to be already in 2.95, so every kernel compiler

IIRC, there had been some architectures where it didn't work correctly.
I don't remember details, though...   Geert?
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