linux-kernel - Re: 2.6.22-rc1 does not boot on VIA C3_2 cause of X86

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Message-ID: <464CD3BB.3090604@zytor.com>
Date:	Thu, 17 May 2007 15:14:19 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andi Kleen <ak@...e.de>
CC:	Dave Jones <davej@...hat.com>, Christian <haveaniceday@...sv.de>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.22-rc1 does not boot on VIA C3_2 cause of X86_CMPXCHG64

Andi Kleen wrote:
>>
>> The C3s all have cx8, but it needs to be enabled in an MSR first.
>> (See arch/i386/kernel/cpu/centaur.c , search for CX8)
> 
> Sigh. I wonder what genius at VIA came up with that setup.
> 

It's very simple, actually.  We had to do something similar at
Transmeta, because Windows NT 4 was very fond of assuming that certain
features meant certain *other* features were enabled, or would just
plain crash if it saw a combination that confused it.

	-hpa
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