From owner-cvs-all@FreeBSD.ORG Wed Mar 17 16:22:17 2004 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 98BA516A4D0; Wed, 17 Mar 2004 16:22:17 -0800 (PST) Received: from TRANG.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5D53843D41; Wed, 17 Mar 2004 16:22:17 -0800 (PST) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (localhost [127.0.0.1]) by TRANG.nuxi.com (8.12.11/8.12.10) with ESMTP id i2I0MFPw003009; Wed, 17 Mar 2004 16:22:16 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.11/8.12.11/Submit) id i2I0M8jT003008; Wed, 17 Mar 2004 16:22:08 -0800 (PST) (envelope-from obrien) Date: Wed, 17 Mar 2004 16:22:08 -0800 From: "David O'Brien" To: Alexander Leidinger Message-ID: <20040318002208.GC2541@dragon.nuxi.com> References: <200403122136.i2CLaCm9096276@repoman.freebsd.org> <20040315033213.GA40858@dragon.nuxi.com> <20040315180324.0fa39609@Magellan.Leidinger.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20040315180324.0fa39609@Magellan.Leidinger.net> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 5.2-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 cc: Tom Rhodes cc: src-committers@freebsd.org cc: cvs-all@freebsd.org cc: cvs-src@freebsd.org Subject: Re: cvs commit: src/share/mk bsd.cpu.mk bsd.dep.mk bsd.lib.mk bsd.sys.mk src/sys/conf files kern.mk kern.pre.mk kmod.mk src/sys/dev/aic7xxx/aicasm Makefile X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: obrien@freebsd.org List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Mar 2004 00:22:17 -0000 On Mon, Mar 15, 2004 at 06:03:24PM +0100, Alexander Leidinger wrote: > > > Problems with icc v8: > > > - panic: npx0 cannot be emulated on an SMP system > > > - UP: first start of /bin/sh results in a FP exception > > > > You forgot the other problems with icc v8 -- Intel's preditorial > > behavior. Note that some parts of the Intel compilers support libs do a > > CPUID call and if it notes an AMD CPU either segfaults or dumbs down the > > capabilities of the CPU to that of the original i386. > > AFAIK: > - only if the compiled binary contains the main function > (the kernel doesn't) > - only if you use a specific compiler option, which I don't use here It happens in several circumstances, not just when using one particular compiler option. > To circumvent this I suggest to read > http://groups.google.com/groups?dq=&hl=en&lr=&ie=UTF-8&oe=UTF-8&group=comp.arch&selm=a13e403a.0402091438.14018f5a%40posting.google.com > > BTW.: AFAIK it doesn't segfault, it exit()s. BTW, icc v8 produced binaries will sometimes segfault on AMD processors. Trust me, AMD has tested this issue more than you have. > Any manufacturer is free to limit the use of his programs as he wants. I > agree, this behavior isn't nice, but life isn't nice either (sometimes). Then I'd like to take the stance of reanble the blind use of EFER.NXE in the FreeBSD/amd64 loader -- Intel ia32e can just add that feature. -- -- David (obrien@FreeBSD.org)