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

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Message-ID: <47D0271F.4070705@zytor.com>
Date:	Thu, 06 Mar 2008 09:17:19 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"H.J. Lu" <hjl.tools@...il.com>
CC:	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:
>>
>>  Not a fix, an (optional) workaround for a system bug.
> 
> 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.
> 

The problem is, you're going to have to be able to produce binaries 
compatible with old kernels for a *long* time for come.  Are you 
honestly saying you'll tell those people "use gcc 4.2 or earlier"?  If 
so, I think most distros will have to freeze gcc for the next several years.

	-hpa
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