From owner-freebsd-current@FreeBSD.ORG Sun Oct 17 18:35:37 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 20B2A16A4CE for ; Sun, 17 Oct 2004 18:35:37 +0000 (GMT) Received: from mail.freebsd.org.cn (dns3.freebsd.org.cn [61.129.66.75]) by mx1.FreeBSD.org (Postfix) with SMTP id 1A13043D2F for ; Sun, 17 Oct 2004 18:35:34 +0000 (GMT) (envelope-from delphij@frontfree.net) Received: (qmail 66657 invoked by uid 0); 17 Oct 2004 18:30:50 -0000 Received: from unknown (HELO beastie.frontfree.net) (219.239.98.7) by mail.freebsd.org.cn with SMTP; 17 Oct 2004 18:30:50 -0000 Received: from localhost (localhost.frontfree.net [127.0.0.1]) by beastie.frontfree.net (Postfix) with ESMTP id 3BFB2132FDA; Mon, 18 Oct 2004 02:35:30 +0800 (CST) Received: from beastie.frontfree.net ([127.0.0.1]) by localhost (beastie.frontfree.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 00850-05; Mon, 18 Oct 2004 02:35:26 +0800 (CST) Received: by beastie.frontfree.net (Postfix, from userid 1001) id 82DFD132668; Mon, 18 Oct 2004 02:35:25 +0800 (CST) Date: Mon, 18 Oct 2004 02:35:25 +0800 From: Xin LI To: David O'Brien Message-ID: <20041017183525.GA1717@frontfree.net> References: <20041016174925.GA96809@dragon.nuxi.com> <20041017153856.GA460@frontfree.net> <20041017182716.GB41354@dragon.nuxi.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="ReaqsoxgOBHFXBhH" Content-Disposition: inline In-Reply-To: <20041017182716.GB41354@dragon.nuxi.com> User-Agent: Mutt/1.4.2.1i X-GPG-key-ID/Fingerprint: 0xCAEEB8C0 / 43B8 B703 B8DD 0231 B333 DC28 39FB 93A0 CAEE B8C0 X-GPG-Public-Key: http://www.delphij.net/delphij.asc X-Operating-System: FreeBSD beastie.frontfree.net 5.3-delphij FreeBSD 5.3-delphij #4: Mon Sep 13 12:44:05 CST 2004 delphij@beastie.frontfree.net:/usr/obj/usr/src/sys/BEASTIE i386 X-URL: http://www.delphij.net X-By: delphij@beastie.frontfree.net X-Location: Beijing, China X-Virus-Scanned: by amavisd-new at frontfree.net 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: Sun, 17 Oct 2004 18:35:37 -0000 --ReaqsoxgOBHFXBhH Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 17, 2004 at 11:27:16AM -0700, David O'Brien wrote: > On Sun, Oct 17, 2004 at 11:38:56PM +0800, Xin LI wrote: > > Hi, David > >=20 > > I really like to see this happen, as it means we are going to support > > modern hardware better, without completely set a barrier for supporting > > older hardware. > >=20 > > By committing this, would you please add something into src/UPDATING > > like: > >=20 > > 200410XX: > > Certain part in libc's i386 assembly source code has been changed > > in favor of using instructions available only on newer processors > > for performance considerations. In order to get libc run on > > 80386 processors, you will have to define I386_CPU. >=20 > We've already so desupported running 6-CURRENT on the original i386 > processor, I'd rather not create the appearance that it is still > supported and easy to do by simply defining one thing. Um... What about something like this: 200410XX: With several performance and maintaince considerations, we are now discouraging using newer FreeBSD on ancient hardware, e.g. 80386. While it is still possible to define some symbols to get it ``just work'', it does not mean that newer FreeBSD versions will perform very well, nor guarantee is provided that these support will not broken in the future. Please stick with an older FreeBSD release if you really need these hardware. Cheers, --=20 Xin LI http://www.delphij.net/ See complete headers for GPG key and other information. --ReaqsoxgOBHFXBhH Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBcrtt/cVsHxFZiIoRAnd/AJ4nnuyZ4TQ3oH/U/EG6leaQb8Ka5wCfdRo9 q8OtrK3CPi2xjrstssUYUwk= =GmfU -----END PGP SIGNATURE----- --ReaqsoxgOBHFXBhH--