linux-kernel - Re: FW: 2.6.38.3 and 2.6.39-rc4 hangs after "Booting the kernel" on quad Pentium Pro system

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Message-Id: <201104240924.12379.chris@csamuel.org>
Date:	Sun, 24 Apr 2011 09:24:07 +1000
From:	Chris Samuel <chris@...muel.org>
To:	Thomas Meyer <thomas@...3r.de>
Cc:	Yuhong Bao <yuhongbao_386@...mail.com>, hpa@...or.com,
	alan@...rguk.ukuu.org.uk, tglx@...utronix.de, mingo@...hat.com,
	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: FW: 2.6.38.3 and 2.6.39-rc4 hangs after "Booting the kernel" on quad Pentium Pro system

Hi Thomas,

On Sat, 23 Apr 2011 11:52:27 PM Thomas Meyer wrote:

> Could you try to change the line:
> 
>         } else if (oreg.ax == 15*1024) {
>                 boot_params.alt_mem_k = (oreg.dx << 6) + oreg.ax;
> 
> to
>         } else if (oreg.ax == 15*1024) {
>                 boot_params.alt_mem_k = (oreg.bx << 6) + oreg.ax;
> 
> That should fix your misdetection.

Took me a while to spot the D->B change - good catch!

I can confirm the allnoconfig now no longer hangs and proceeds
to panic about not being able to mount the rootfs, which is good.
I'll build a more functional kernel now and check it boots OK.

All the best,
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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