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Date:	Tue, 10 Nov 2009 14:47:20 -0800
From:	"H. Peter Anvin" <>
To:	Willy Tarreau <>
CC:	Ingo Molnar <>, Pavel Machek <>,
	Avi Kivity <>,
	Alan Cox <>,
	Matteo Croce <>,
	Sven-Haegar Koch <>,
Subject: Re: i686 quirk for AMD Geode

On 11/10/2009 02:42 PM, Willy Tarreau wrote:
> On Tue, Nov 10, 2009 at 11:20:31PM +0100, Ingo Molnar wrote:
>> * H. Peter Anvin <> wrote:
>>> *THIS* is the kind of complexity that makes me think that having a 
>>> single source for all interpretation done in the kernel is the 
>>> preferred option.
>> Definitely agreed ... The NX code is quite a maze right now, so changes 
>> to it should come generously laced with cleanups.
> BTW, I don't see why we should be impacted by NX. Trying to
> execute from an NX page would return a SEGV, not SIGILL, so
> we should not be bothered, am I wrong ?

Yes.  Consider a page-crossing instruction.

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