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

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Message-ID: <47D0275B.4020105@adacore.com>
Date:	Thu, 06 Mar 2008 12:18:19 -0500
From:	Robert Dewar <dewar@...core.com>
To:	"H.J. Lu" <hjl.tools@...il.com>
CC:	"H. Peter Anvin" <hpa@...or.com>, Jakub Jelinek <jakub@...hat.com>,
	NightStrike <nightstrike@...il.com>,
	Olivier Galibert <galibert@...ox.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

H.J. Lu wrote:

> So that is the bug in the Linux kernel. Since fixing kernel is much easier
> than providing a workaround in compilers, I think kernel should be fixed
> and no need for icc/gcc fix.

Fixing a bug in the Linux kernel is not "much easier". You are taking
a purely engineering viewpoint, but life is not like that. There are
lots of copies of Linux kernels around and in use. The issue is not
fixing the kernel per se, it is propagating that change to all
Linux kernels in use -- THAT'S another matter entirely, and is
far far more difficult than making sure that a kernel fix is
qualified and widely proopagated.

> 
> 
> H.J.

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