From owner-freebsd-hackers Sat Jul 1 2:27:43 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.40.131]) by hub.freebsd.org (Postfix) with ESMTP id 33FE837B9AD; Sat, 1 Jul 2000 02:27:39 -0700 (PDT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.9.3/8.9.3) with ESMTP id LAA09191; Sat, 1 Jul 2000 11:27:37 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: wilko@FreeBSD.ORG Cc: Mike Smith , KATO Takenori , hackers@FreeBSD.ORG Subject: Re: invlpg produces strange sig11 on PentiumPro box In-reply-to: Your message of "Sat, 01 Jul 2000 10:56:02 +0200." <20000701105601.B16590@freebie.wbnet> Date: Sat, 01 Jul 2000 11:27:37 +0200 Message-ID: <9189.962443657@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message <20000701105601.B16590@freebie.wbnet>, Wilko Bulte writes: >> Look at the first paragraph: This is for Pentium Pro cpus running >> in motherboards where the BIOS does not contain the needed microcode >> updates. >> >> The patch disables invlpg on all cpuid's < 0x619, despite the fact >> that they work just fine if your motherboards BIOS have the right >> microcode update for your cpu stepping. >> >> This hack should be maintained by the person who need it, it should >> not be lobotomizing FreeBSD in general. > >Maybe make it conditional via an option in the kernel config file? >Off by default of course. Looking at LINT/NOTES I see very obscure things >for Cyrix and Bluelightning CPUs already. But Wilko, Those hacks are because the silicon, when used as directed, has flaws. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message