Re: i686 quirk for AMD Geode

H. Peter Anvin
2009-11-10T22:54:46Z

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 <hpa@zytor.com> 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.

-hpa