Date: Wed, 27 Feb 2002 17:23:20 -0800 (PST) From: Dennis Holmes <dholmes@liberator.dyndns.org> To: jerfa@yahoo.com (Johann Frisch) Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Pentium and NO_F00F_HACK = kernel panic Message-ID: <200202280123.RAA79623@star-one.liberator.dyndns.org> In-Reply-To: <20020227213355.EAAC837B405@hub.freebsd.org> from Johann Frisch at "Feb 27, 2002 1:33:55 pm"
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Look what Johann Frisch wrote:
> I just build a 4.5-STABLE kernel with "option NO_F00F_HACK" on a
> Pentium 100 with the F00F bug (I thought I could save some bytes...).
> This kernel paniced right after it printed the first two copyright
> lines. Is this a bug or working as designed?
> --
> MfG,
> Johann
If you have a Pentium with the bug, then you don't want this option. By
doing this you've eliminated the code that makes you unsusceptible to the
bug. (Stated another way for clarity, the "F00F hack" works around the CPU
bug; the NO_F00F_HACK option disables the workaround.)
+----------------+-------------------+------------------------------------+
| Dennis Holmes | dholmes@rahul.net | "We demand rigidly defined |
| San Jose, CA +-------------------+ areas of doubt and uncertainty!" |
+------=>{ Meanwhile, as Ford said: "Where are my potato chips?" }<=------+
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