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Date: Fri, 05 Sep 2008 21:07:01 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Robert Hancock <hancockr@shaw.ca>
CC: Yinghai Lu <yhlu.kernel@gmail.com>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       x86 maintainers <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [git pull] x86 fixes (NOPL issue)
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Robert Hancock wrote:
>>
>> if so, should only test on VIA chips.
> 
> The virtual CPUs are more of a problem. They can't be distinguished from 
> the real CPU models they are emulating other than by actually testing.

Right, hence the first-principles test.  In theory we could just execute 
the test on ALL CPUs, but I have excluded family < 6 simply because 
there is a (very) remote possibility one of them might have used that 
opcode for something completely different.

	-hpa