From owner-freebsd-current@FreeBSD.ORG Mon Oct 18 02:39:44 2004 Return-Path: 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 9802616A4CE; Mon, 18 Oct 2004 02:39:44 +0000 (GMT) Received: from smtp1.server.rpi.edu (smtp1.server.rpi.edu [128.113.2.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3107743D31; Mon, 18 Oct 2004 02:39:44 +0000 (GMT) (envelope-from drosih@rpi.edu) Received: from [128.113.24.47] (gilead.netel.rpi.edu [128.113.24.47]) by smtp1.server.rpi.edu (8.13.0/8.13.0) with ESMTP id i9I2dcdP003208; Sun, 17 Oct 2004 22:39:40 -0400 Mime-Version: 1.0 X-Sender: drosih@mail.rpi.edu Message-Id: In-Reply-To: <20041018022017.GA50477@dragon.nuxi.com> References: <20041016174925.GA96809@dragon.nuxi.com> <20041017153856.GA460@frontfree.net> <20041017182716.GB41354@dragon.nuxi.com> <20041017183525.GA1717@frontfree.net> <20041018022017.GA50477@dragon.nuxi.com> Date: Sun, 17 Oct 2004 22:39:37 -0400 To: obrien@freebsd.org, Xin LI From: Garance A Drosihn Content-Type: text/plain; charset="us-ascii" ; format="flowed" X-CanItPRO-Stream: default X-RPI-SA-Score: undef - spam-scanning disabled X-Scanned-By: CanIt (www . canit . ca) cc: freebsd-current@freebsd.org Subject: Re: [PATCH] optimizing X now that we don't support i386 CPU's on 6-CURRENT X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Oct 2004 02:39:44 -0000 At 7:20 PM -0700 10/17/04, David O'Brien wrote: > > ---------------------------- > revision 1.296 > date: 2001/01/14 10:11:10; author: jhb; state: Exp; lines: +2 -2 > Remove I386_CPU from GENERIC. Support for the 386 seriously > pessimizes performance on other x86 processors. Custom kernels > can still be built that will run on the 386. > ---------------------------- > >I remember someone tried a few years ago after this commit to get >FreeBSD 5-CURRENT running on an I386 and had to hack some things to >get it work. Since no one has reported success in doing this since >then I'm willing to bet you dinner next time I'm in Bejing that we've >broken running on real I386's w/o realizing it. For what it's worth, I was also under the impression that we were going to recommend that people running a "genuine 80386" chip should probably stick with the 4.x-series of releases. Even if 5.3 works on 80386 right now, I was not sure that it would continue to work for the life of the 5.x series. I don't know where I picked up that idea, but even if we are supporting 80386 for 5.x then I think we should be able to drop it for 6.x. -- Garance Alistair Drosehn = gad@gilead.netel.rpi.edu Senior Systems Programmer or gad@freebsd.org Rensselaer Polytechnic Institute or drosih@rpi.edu