linux-kernel - Re: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction flag

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Message-ID: <20080306141221.GC5236@dspnet.fr.eu.org>
Date:	Thu, 6 Mar 2008 15:12:21 +0100
From:	Olivier Galibert <galibert@...ox.com>
To:	Paolo Bonzini <bonzini@....org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Chris Lattner <clattner@...le.com>,
	Michael Matz <matz@...e.de>,
	Richard Guenther <richard.guenther@...il.com>,
	Joe Buck <Joe.Buck@...opsys.com>, Jan Hubicka <hubicka@....cz>,
	Aurelien Jarno <aurelien@...el32.net>,
	linux-kernel@...r.kernel.org, gcc@....gnu.org
Subject: Re: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction   flag

On Thu, Mar 06, 2008 at 03:03:15PM +0100, Paolo Bonzini wrote:
> Olivier Galibert wrote:
> >On Wed, Mar 05, 2008 at 05:12:07PM -0800, H. Peter Anvin wrote:
> >>It's a kernel bug, and it needs to be fixed.
> >
> >I'm not convinced.  It's been that way for 15 years, it's that way in
> >the BSD kernels, at that point it's a feature.  The bug is in the
> >documentation, nowhere else.  And in gcc for blindly trusting the
> >documentation.
> 
> No, the bug *in the kernel* was already present (if you had a signal 
> raised during a call to memmove).  It's just more visible with GCC 4.3.

I'm curious, since when paper documentation became the Truth and
reality became a bug?

  OG.

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