From owner-freebsd-current@FreeBSD.ORG Sun Jan 25 03:00:41 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 918AC16A4CE for ; Sun, 25 Jan 2004 03:00:41 -0800 (PST) Received: from smtp.des.no (flood.des.no [217.116.83.31]) by mx1.FreeBSD.org (Postfix) with ESMTP id 00AE143D1D for ; Sun, 25 Jan 2004 03:00:40 -0800 (PST) (envelope-from des@des.no) Received: by smtp.des.no (Pony Express, from userid 666) id 96707530A; Sun, 25 Jan 2004 12:00:38 +0100 (CET) Received: from dwp.des.no (des.no [80.203.228.37]) by smtp.des.no (Pony Express) with ESMTP id BCD825308; Sun, 25 Jan 2004 12:00:28 +0100 (CET) Received: by dwp.des.no (Postfix, from userid 2602) id 259DF33C9A; Sun, 25 Jan 2004 12:00:28 +0100 (CET) To: Bruce Evans References: <20040124074052.GA12597@cirb503493.alcatel.com.au> <20040125143203.G29442@gamplex.bde.org> From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=) Date: Sun, 25 Jan 2004 12:00:27 +0100 In-Reply-To: <20040125143203.G29442@gamplex.bde.org> (Bruce Evans's message of "Sun, 25 Jan 2004 17:28:31 +1100 (EST)") Message-ID: User-Agent: Gnus/5.090024 (Oort Gnus v0.24) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable X-Spam-Checker-Version: SpamAssassin 2.61 (1.212.2.1-2003-12-09-exp) on flood.des.no X-Spam-Level: ss X-Spam-Status: No, hits=2.6 required=5.0 tests=RCVD_IN_DYNABLOCK, RCVD_IN_SORBS autolearn=no version=2.61 cc: Peter Jeremy cc: freebsd-current@freebsd.org Subject: Re: 80386 support in -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, 25 Jan 2004 11:00:41 -0000 Bruce Evans writes: > This is the specious reason. The synchronization code relies on a > particular instruction that might be very inefficient to emulate on a > 386, but emulation is not done; the instruction is just replaced by > an instruction or sequence of instructions that is slower in some cases > and faster in others (mostly slower, but not especially so, except > probably on P4's). that's actually what I meant by emulated... as for the rest, I bow to your superior knowledge. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no