Date: Wed, 5 Mar 2008 13:20:05 -0800
From: Joe Buck <Joe.Buck@synopsys.COM>
To: Michael Matz <matz@suse.de>
Cc: Jan Hubicka <hubicka@ucw.cz>, Aurelien Jarno <aurelien@aurel32.net>,
       "H. Peter Anvin" <hpa@zytor.com>, linux-kernel@vger.kernel.org,
       gcc@gcc.gnu.org
Subject: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction flag
Message-ID: <20080305212005.GC17267@synopsys.com>
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>
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On Wed, 5 Mar 2008, Jan Hubicka wrote:
> > Linux kernel is disabling red zone and use kernel code model, yet the 
> > ABI is not going to be adjusted for that.
> > 
> > This is resonably easy to fix on kernel side in signal handling, or by
> > removing std usage completely

On Wed, Mar 05, 2008 at 10:02:07PM +0100, Michael Matz wrote:
> That is true.  But it requires updating the kernel to a fixed one if you 
> want to run your programs compiled by 4.3 :-/  Not something we'd like to 
> demand.

I changed the title just for emphasis.

I think that we can't ship 4.3.0 if signal handlers on x86/x86_64
platforms for both Linux and BSD systems will mysteriously (to the users)
fail, and it doesn't matter whose fault it is.


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