From owner-freebsd-amd64@FreeBSD.ORG Sun Feb 13 18:41:00 2005 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id A84FD16A4CE for ; Sun, 13 Feb 2005 18:41:00 +0000 (GMT) Received: from troutmask.apl.washington.edu (troutmask.apl.washington.edu [128.208.78.105]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6951B43D1F for ; Sun, 13 Feb 2005 18:41:00 +0000 (GMT) (envelope-from sgk@troutmask.apl.washington.edu) Received: from troutmask.apl.washington.edu (localhost [127.0.0.1]) j1DIep4V041594; Sun, 13 Feb 2005 10:40:51 -0800 (PST) (envelope-from sgk@troutmask.apl.washington.edu) Received: (from sgk@localhost)j1DIepm2041593; Sun, 13 Feb 2005 10:40:51 -0800 (PST) (envelope-from sgk) Date: Sun, 13 Feb 2005 10:40:51 -0800 From: Steve Kargl To: Thomas Krause -CI- Message-ID: <20050213184051.GA41566@troutmask.apl.washington.edu> References: <420F9CA1.4040207@chef-ingenieur.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <420F9CA1.4040207@chef-ingenieur.de> User-Agent: Mutt/1.4.2.1i cc: freebsd-amd64@freebsd.org Subject: Re: -mno-sse -mno-sse2 -mno-mmx -mno-3dnow when compiling kernel X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Feb 2005 18:41:00 -0000 On Sun, Feb 13, 2005 at 07:29:53PM +0100, Thomas Krause -CI- wrote: > Hello, > why are the Switches "-mno-sse -mno-sse2 -mno-mmx -mno-3dnow" are set > when compiling an amd64 kernel? I think, the CPU supports all thease > features. > AFAIK, floating point is not permitted in the kernel. Why would you need to use sse, sse2, mmx, or 3dnow? -- Steve