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From: "H. Peter Anvin" <hpa@zytor.com>
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)
Date: Fri, 05 Sep 2008 21:07:01 -0700	[thread overview]
Message-ID: <48C201E5.7080703@zytor.com> (raw)
In-Reply-To: <48C200F8.90705@shaw.ca>

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

  reply	other threads:[~2008-09-06  4:07 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.HDZlnwhQIaOU7WkvenWvWDveLiI@ifi.uio.no>
     [not found] ` <fa.uHa5kqSRJ8gj0H3r9BmGsTqRvFI@ifi.uio.no>
2008-09-06  4:03   ` [git pull] x86 fixes (NOPL issue) Robert Hancock
2008-09-06  4:07     ` H. Peter Anvin [this message]
2008-09-06  5:50       ` Yinghai Lu
2008-09-06  5:53         ` H. Peter Anvin
2008-09-06  2:22 H. Peter Anvin
2008-09-06  3:01 ` Yinghai Lu
2008-09-08 15:02 ` David Sanders

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