linux-kernel - Re: [crash, bisected] Re: [PATCH 3/4] x86

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Message-ID: <486ADD9F.3000305@zytor.com>
Date:	Tue, 01 Jul 2008 18:45:03 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mike Travis <travis@....com>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>
Subject: Re: [crash, bisected] Re: [PATCH 3/4] x86_64: Fold pda into per cpu
 area

Mike Travis wrote:
> Mike Travis wrote:
> ...  I'm still re-verifying that the source bits and config options 
>> are identical (it was a later git-remote update), and that in fact it is
>> the gcc --version, but that may be the conclusion.  
> ...
> 
> Yup, it's the gcc --version that makes the difference.  GCC 4.2.0 couldn't
> boot past the grub screen, GCC 4.2.4 made it to the login prompt.
> 

IIRC, 4.2.0, 4.2.1 and 4.3.0 are known to miscompile the kernel in one 
way or another, however, that is from memory so don't quote me on it.

	-hpa
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