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

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Date:	Mon, 07 Jul 2008 10:17:40 -0700
From:	Mike Travis <travis@....com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
CC:	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	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

Eric W. Biederman wrote:
> Mike Travis <travis@....com> writes:
> 
>> will only boot and run with gcc-4.2.0, and does the "failure at grub" screen
>> with
>> gcc-4.2.4 ...!
> 
> Do these tests have an early serial console enabled?  I want to confirm
> that the failure is very early in boot before or just as we reach C code.
> 
> If you don't have an early console we could be failing late in the process just
> not have visibility.
> 
>> Any other suggestions?
> 
> If you have a serial console to add a little bit of instrumentation super duper early.
> Although looking at the generated objects might be just as interesting.
> 
> Eric

Hi,

Sorry for the delay, been off the past 4 days.

I'll see how closely I can narrow down where the fault is.  I have been inserting
very early printk's to track how far into the startup it gets before bailing.

Thanks,
Mike
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