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Date:	Mon, 21 Jul 2008 22:10:30 -0700
From:	Samuel Sieb <samuel@...b.net>
To:	Ingo Molnar <mingo@...e.hu>
CC:	"Rafael C. de Almeida" <almeidaraf@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: kernel won't boot on a Cyrix MediaGXm (Geode )

Ingo Molnar wrote:
> * Rafael C. de Almeida <almeidaraf@...il.com> wrote:
> 
>> Samuel Sieb wrote:
>>> I have a computer here with a CPU that the BIOS identifies as:
>>> Cyrix MediaGXm/Cx5530 Unicorn Revision 1.19.3B
>>>
>>> I can't boot any kernel later than 2.6.22 on it.  Anything later either
>>> hangs or gives random kernel panics while booting.  I tracked down the
>>> problem to a specific commit:
>>>
>>> commit f25f64ed5bd3c2932493681bdfdb483ea707da0a
> does the debug patch below (ontop of v2.6.26 or later kernels) make the 
> system bootable again? Commit f25f64ed5 changed the meaning of that 
> line. This patch switches back to the old behavior (which essentially 
> did nothing, due to macro side-effect bugs).
> 
Commenting out this line didn't have any effect that I could see.  I was 
hoping one way or another it would affect the TSC unstable message I 
get, but it didn't even change that.
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