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Date:      Sun, 1 Oct 2000 23:47:20 +0200
From:      Wilko Bulte <wkb@freebie.demon.nl>
To:        "Jeffrey J. Mountin" <jeff-ml@mountin.net>
Cc:        Bill Fumerola <billf@chimesnet.com>, BSD <bsd@shell-server.com>, stable@freebsd.org
Subject:   Re: Another 4.1-S panic (full report)
Message-ID:  <20001001234720.A14383@freebie.demon.nl>
In-Reply-To: <4.3.2.20001001144825.00e164a0@207.227.119.2>; from jeff-ml@mountin.net on Sun, Oct 01, 2000 at 02:56:22PM -0500
References:  <Pine.BSF.4.10.10010011401380.70294-100000@marvin.shell-server.com> <4.3.2.20001001132645.00cae340@207.227.119.2> <Pine.BSF.4.10.10010011401380.70294-100000@marvin.shell-server.com> <20001001154131.Y38472@jade.chc-chimes.com> <4.3.2.20001001144825.00e164a0@207.227.119.2>

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On Sun, Oct 01, 2000 at 02:56:22PM -0500, Jeffrey J. Mountin wrote:
> At 03:41 PM 10/1/00 -0400, Bill Fumerola wrote:
> 
> >That's like saying "I turn down the scsi probe time" without having any
> >scsi devices in your kernel. Every time NO_F00F_HACK is used is in conjunction
> >with I586_CPU.
> 
> Perhaps then the following should be revised.
> 
> LINT:
> 
> # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
> # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
> # executed.  This should be included for ALL kernels that won't run
> # on a Pentium.
> 
> to:
> 
> # NO_F00F_HACK disables the hack that prevents Pentiums (and ONLY
> # Pentiums) from locking up when a LOCK CMPXCHG8B instruction is
> # executed.  This should be included for ALL kernels that won't run
> # on a Pentium and have the "cpu I586_CPU" option.

Is there any reason *not* to have the F00F fix/hack in the kernel
automatically when it detects a true (and buggy) Pentium? In other words,
does it make sense to have this as an option?

-- 
Wilko Bulte  	 
wilko@freebsd.org 			Arnhem, the Netherlands


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