From owner-freebsd-current Mon Feb 24 8:38:30 2003 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 31EFF37B401 for ; Mon, 24 Feb 2003 08:38:29 -0800 (PST) Received: from puffin.mail.pas.earthlink.net (puffin.mail.pas.earthlink.net [207.217.120.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 9A5B943FCB for ; Mon, 24 Feb 2003 08:38:28 -0800 (PST) (envelope-from tlambert2@mindspring.com) Received: from pool0419.cvx40-bradley.dialup.earthlink.net ([216.244.43.164] helo=mindspring.com) by puffin.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 18nLbf-0007Ib-00; Mon, 24 Feb 2003 08:37:32 -0800 Message-ID: <3E5A49ED.4D7E93DD@mindspring.com> Date: Mon, 24 Feb 2003 08:35:57 -0800 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: freebsd-current@fair-ware.com Cc: freebsd-current@FreeBSD.ORG, 'John Hay' Subject: Re: cc: Internal error: Illegal instruction (program as) References: <003c01c2dbf4$27993390$0200a8c0@howesnet> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a40a6d722657b3d3df4687c531a97502d82601a10902912494350badd9bab72f9c350badd9bab72f9c Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG "Paul A. Howes" wrote: > These two kernel options seem to have solved the problem. Builds now > run smoothly and error-free. I read the comments in NOTES about these > options and something clicked: I recall that most Pentium processors > will only deal with 4 kB pages. Aren't 4 MB pages a feature of the Xeon > processor, as it can address much more memory? No. The feature is existance-tested before it is used. These processors have a bug when dealing with certain operations relating to interactions of 4K and 4M pages. > If that is the case, then these options should be the default, and their > inverse provided in the kernel configuration file (ENABLE_PSE & > ENABLE_PG_G). You will lose around 15% performance from not having them enabled. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message