Re: You have been had by the Evil Empire, sigh...

["Mark Keating" <mark@the-keatings.com>]

> -----Original Message-----
> From: owner-misc@openbsd.org [mailto:owner-misc@openbsd.org] 
> On Behalf Of Theo de Raadt
> Sent: Monday, February 28, 2005 7:27 PM
> To: Niall O'Higgins
> Cc: Steve Shockley; misc@openbsd.org
> Subject: Re: You have been had by the Evil Empire, sigh... 
> 
> > On Mon, Feb 28, 2005 at 03:34:46PM -0500, Steve Shockley wrote:
> > > You're partially right; the hardware NX only works on amd64 (and 
> > > presumably Intel chips with NX),
> > 
> > Out of curiosity, I seem to recall that Intel cloned just about 
> > everything in AMD64 _except_ the NX bit. Is this still the 
> case or am 
> > I horribly behind the times?
> 
> The first versions lacked it.  Newer machines apparently have it.
> 
> marco is supposed to fix our man page, but he is days behind on that.
> 
> 
This is correct.  All of the 'Nocona' processors with stepping E-0 or later
have NX support.  There are D-0 verisons of the processors that do not have
NX support.  I have not had the chance to run OpenBSD on a 'Nocona' based
system yet(driver issue), but running RedHat EL 3 on a non-NX processor can
lead to issues (100% CPU utilization and hung processes/drivers).

mark