From owner-cvs-all Fri Sep 6 21:16:15 2002 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 173F737B400; Fri, 6 Sep 2002 21:16:09 -0700 (PDT) Received: from dragon.nuxi.com (trang.nuxi.com [66.92.13.169]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3C60043E65; Fri, 6 Sep 2002 21:16:08 -0700 (PDT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.12.6/8.12.2) with ESMTP id g874G7fO007768; Fri, 6 Sep 2002 21:16:07 -0700 (PDT) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.12.6/8.12.5/Submit) id g874G6vO007767; Fri, 6 Sep 2002 21:16:06 -0700 (PDT) Date: Fri, 6 Sep 2002 21:16:06 -0700 From: "David O'Brien" To: Kenneth Culver Cc: Kris Kennaway , Maxime Henrion , cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: HEADS UP: SSE instructions (Re: cvs commit: src/share/mk bsd.cpu.mk) Message-ID: <20020907041606.GA7708@dragon.nuxi.com> Reply-To: obrien@FreeBSD.ORG Mail-Followup-To: David O'Brien , Kenneth Culver , Kris Kennaway , Maxime Henrion , cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, current@FreeBSD.ORG References: <20020907012324.GA84837@xor.obsecurity.org> <20020906212438.J46717-100000@alpha.yumyumyum.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20020906212438.J46717-100000@alpha.yumyumyum.org> User-Agent: Mutt/1.4i X-Operating-System: FreeBSD 5.0-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 Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Fri, Sep 06, 2002 at 09:28:28PM -0400, Kenneth Culver wrote: > > Note that you'll need to have 'options CPU_ENABLE_SSE' in your kernel > > configuration file if you have a SSE-capable CPU, otherwise you'll get > > SIGILL from certain applications (e.g. ncurses) > > What if you don't want to do this though? Athlon XP processors support SSE > instructions, but not at the same time as 3dnow instructions. The > processor has to switch modes or something like that. What if a user wants > to actually use the 3dnow instructions? Does this mean that on an athlon > XP which supports SSE instructions, if you don't want to enable them > you'll catch SIGILL and die when using those "certain apps?" Just > wondering. I will get an AMD authoritative answer to this question. Please wait a week before discussing the issue more. -- David To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message