Date: Thu, 20 Jul 2000 16:55:32 -0700 From: R Joseph Wright <rjoseph@mammalia.org> To: Mike Meyer <mwm@mired.org> Cc: freebsd-questions@FreeBSD.org Subject: Re: Kernel option NO_F00F_HACK Message-ID: <20000720165532.B6374@manatee.mammalia.org> In-Reply-To: <14711.34634.730066.221657@guru.mired.org>; from mwm@mired.org on Thu, Jul 20, 2000 at 06:12:10PM -0500 References: <bulk.49797.20000720153139@hub.freebsd.org> <14711.34634.730066.221657@guru.mired.org>
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On Thu, Jul 20, 2000 at 06:12:10PM -0500, Mike Meyer wrote:
> > From: R Joseph Wright <rjoseph@mammalia.org>
> > On Thu, Jul 20, 2000 at 12:07:31PM -0500, Dan Nelson wrote:
> > > In the last episode (Jul 20), Siegbert Baude said:
> > > > Hi,
> > > > is this kernel option a workaround for a known Pentium bug (feature?
> > > > :-) )? If so did Intel remove this bug in newer chips? Or asked in a
> > > > different way: Is this option still necessary for all generations of
> > > > Pentiums from Pentium 60 to Pentium III 1 GHz?
> > > All 586-class chips from Intel suffer from the bug afaik. The pII and
> > > pIII aren't Pentiums for the purposes of the F00F test, they're
> > > 686-class CPUs. Blame Intel for their goofy naming scheme ("haha!
> > > we'll stop using numbers at all, and call everything Pentium from now
> > > on!")
>
> Intel changed it when they found out that the US IP laws wouldn't let
> you trademark numbers. So AMD could create an AMD-486, and there
> wasn't anything they could do about it from a legal perspective.
>
> However, they still have to get trademarks for each new Pentium
> (unless the laws have changed). Pentium(TM) doesn't cover Pentium II,
> etc. If anyone is interested in trying trademark squatting, they could
> check on Pentium IV or V or ....
>
> > That option has always been rejected by config whenever I have tried to use
> > it <shrug />.
>
> Strange. Are you sure you're spelling it right (with two zeros, not
> letter Os)? I've never built a kernel without it.
>
Aaahh...now that you mention zeros....
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