Date: Wed, 5 Mar 2008 22:59:21 +0100 (CET)
From: Michael Matz <matz@suse.de>
To: Chris Lattner <clattner@apple.com>
Cc: "H.Peter Anvin" <hpa@zytor.com>,
       Richard Guenther <richard.guenther@gmail.com>,
       Joe Buck <Joe.Buck@synopsys.com>, Jan Hubicka <hubicka@ucw.cz>,
       Aurelien Jarno <aurelien@aurel32.net>, linux-kernel@vger.kernel.org,
       gcc@gcc.gnu.org
Subject: Re: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction
 flag
In-Reply-To: <738B72DB-A1D6-43F8-813A-E49688D05771@apple.com>
Message-ID: <Pine.LNX.4.64.0803052258530.20583@wotan.suse.de>
References: <20080305153020.GA24631@volta.aurel32.net> <47CEC3AA.6080709@zytor.com>
 <20080305195834.GA17267@synopsys.com> <20080305202319.GA17053@volta.aurel32.net>
 <Pine.LNX.4.64.0803052133400.20583@wotan.suse.de> <20080305204234.GB17267@synopsys.com>
 <20080305204945.GB14011@atrey.karlin.mff.cuni.cz>
 <Pine.LNX.4.64.0803052158270.20583@wotan.suse.de> <20080305212005.GC17267@synopsys.com>
 <84fc9c000803051332q2f2eedeej7d3c0509e698cabf@mail.gmail.com>
 <47CF11D6.7070901@zytor.com> <738B72DB-A1D6-43F8-813A-E49688D05771@apple.com>
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Hi,

On Wed, 5 Mar 2008, Chris Lattner wrote:

> 
> On Mar 5, 2008, at 1:34 PM, H. Peter Anvin wrote:
> 
> >Richard Guenther wrote:
> > >We didn't yet run into this issue and build openSUSE with 4.3 since more
> > >than
> > >three month.
> >
> >Well, how often do you take a trap inside an overlapping memmove()?
> 
> How hard is it to change the kernel signal entry path from "pushf" to
> "pushf;cld"?  Problem solved, no?

The problem is with old kernels, which by definition stay unfixed.


Ciao,
Michael.
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