From owner-freebsd-smp Wed Dec 4 12:24:34 2002 Delivered-To: freebsd-smp@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 72A6937B401 for ; Wed, 4 Dec 2002 12:24:33 -0800 (PST) Received: from mail.speakeasy.net (mail15.speakeasy.net [216.254.0.215]) by mx1.FreeBSD.org (Postfix) with ESMTP id CADA943ED4 for ; Wed, 4 Dec 2002 12:24:32 -0800 (PST) (envelope-from jhb@FreeBSD.org) Received: (qmail 22955 invoked from network); 4 Dec 2002 20:24:38 -0000 Received: from unknown (HELO server.baldwin.cx) ([216.27.160.63]) (envelope-sender ) by mail15.speakeasy.net (qmail-ldap-1.03) with DES-CBC3-SHA encrypted SMTP for ; 4 Dec 2002 20:24:38 -0000 Received: from laptop.baldwin.cx (gw1.twc.weather.com [216.133.140.1]) by server.baldwin.cx (8.12.6/8.12.6) with ESMTP id gB4KOUuH042029; Wed, 4 Dec 2002 15:24:30 -0500 (EST) (envelope-from jhb@FreeBSD.org) Message-ID: X-Mailer: XFMail 1.5.2 on FreeBSD X-Priority: 3 (Normal) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 8bit MIME-Version: 1.0 In-Reply-To: <3DEE51A6.90BE5C12@mindspring.com> Date: Wed, 04 Dec 2002 15:24:37 -0500 (EST) From: John Baldwin To: Terry Lambert Subject: Re: Intel SE7500CW2 narrowed down... Cc: smp@FreeBSD.ORG, beemern , Oliver Blasnik Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On 04-Dec-2002 Terry Lambert wrote: > John Baldwin wrote: >> The only other reported/known problems are on older Pentium and possibly >> PPro machines. Do you have any other SMP i386 arch machines that do not >> work? > > [ ... ] > >> Apparently both Linux and Windows use a different algorithm for starting >> up AP's on i386 in that (I think) they send broadcast IPI's instead of >> IPI'ing each CPU individually. > > This is why they work on old ASUS Pentium 90 boxes, and FreeBSD > does not. Well, considering FreeBSD started out working on Pentium 90 machines and has used the same algorithm since it first got SMP support, I am kind of skeptical that this is the source of the recent breakage of support for dual Pentiums. > It's not related to the P4 SE7500CW2-type problems, which are > incorrect APIC description and chipset programming. In which way exactly? -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message