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

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Message-ID: <m1r6a4c5im.fsf@frodo.ebiederm.org>
Date:	Tue, 08 Jul 2008 16:36:49 -0700
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Mike Travis <travis@....com>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"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

Mike Travis <travis@....com> writes:

> Unfortunately it's back to the problem of faulting before x86_64_start_kernel()
> and grub just immediately reboots.  So I'm back at analyzing assembler and
> config differences.

Ok.  That is a narrow window of code.  So it shouldn't be too bad, nasty though.

If you would like to trace through it I have attached my serial port
debugging routines that I use in that part of the code.

Eric


View attachment "linux-debug.S" of type "text/plain" (5877 bytes)