linux-kernel - Re: [Bug 8136] 2.6.21-rc2-mm2 won't boot

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Message-Id: <20070306161559.e0c7ee71.akpm@linux-foundation.org>
Date:	Tue, 6 Mar 2007 16:15:59 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Nicolas.Mailhot@...oste.net
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	"bugme-daemon@...nel-bugs.osdl.org" 
	<bugme-daemon@...zilla.kernel.org>
Subject: Re: [Bug 8136] 2.6.21-rc2-mm2 won't boot

On Tue, 6 Mar 2007 15:36:29 -0800
bugme-daemon@...zilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=8136
> 

Let's take this to email.

> 
> 
> 
> ------- Additional Comments From Nicolas.Mailhot@...oste.net  2007-03-06 15:36 -------
> Created an attachment (id=10631)
>  --> (http://bugzilla.kernel.org/attachment.cgi?id=10631&action=view)
> Printscreen with vesfg disabled and earlyprintk=vga
> 

So rc2-mm2 panics due to "MP-BIOS bug: 8254 timer not connected to IO-APIC" and
rc2-mm1 does not.

Could be ACPI, could be x86_64 timer changes, could be something else.

Would you have time to bisect it? 
http://www.zip.com.au/~akpm/linux/patches/stuff/bisecting-mm-trees.txt
explains how.

If so, I'd suggest you drill in on the patches between
x86_64-mm-defconfig-update.patch and
optimize-and-simplify-get_cycles_sync.patch: the x86 changes.

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