linux-kernel - Re: Regression: boot failure on AMD Elan TS-5500

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Message-ID: <486A95F1.3080007@zytor.com>
Date:	Tue, 01 Jul 2008 13:39:13 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Sean Young <sean@...s.org>, Rusty Russell <rusty@...tcorp.com.au>,
	linux-kernel@...r.kernel.org
Subject: Re: Regression: boot failure on AMD Elan TS-5500

Jeremy Fitzhardinge wrote:
> H. Peter Anvin wrote:
>> Not really.  In particular, I really don't want to add something that 
>> is even remotely likely to break on other platforms, and a fence 
>> instruction is relatively recent.
> 
> I wonder if a cpuid would do the trick?  Do we still support cpuid-less 
> processors?

Yes, we do.  Worst case, we could bypass it, but I'd like to understand 
what the real constraint is, here.

	-hpa
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