linux-kernel - Re: 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: <201104231135.54966.chris@csamuel.org>
Date:	Sat, 23 Apr 2011 11:35:54 +1000
From:	Chris Samuel <chris@...muel.org>
To:	Yuhong Bao <yuhongbao_386@...mail.com>
Cc:	alan@...rguk.ukuu.org.uk, hpa@...or.com, tglx@...utronix.de,
	mingo@...hat.com, x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: 2.6.38.3 and 2.6.39-rc4 hangs after "Booting the kernel" on quad Pentium Pro system

On Sat, 23 Apr 2011 11:28:20 AM Yuhong Bao wrote:

> This is a stupid BIOS,

I won't argue with that, it is at least 15 years old..

> but do you know if it used E820 in  the old kernel?

No, it was using E801:

BIOS-provided physical RAM map:
 BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e801: 0000000000100000 - 0000000010000000 (usable)

The new kernel has the '1' in the top end of the second
part being one place to the right:

BIOS-provided physical RAM map:
 BIOS-e801: 0000000000000000 - 000000000009f000 (usable)
 BIOS-e801: 0000000000100000 - 0000000001000000 (usable)

> I wonder if this has something to do with the changes made
> to support ACPI 3.0 changes to E820?

I suspect not, given it's not using E820. But could be wrong. ;-)

> This would be easy to diagnose with DOS DEBUG with no himem.sys
> loaded.

Would be happy to try with some instructions if it would help.

cheers,
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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