From owner-freebsd-current Thu Dec 3 12:32:38 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA18051 for freebsd-current-outgoing; Thu, 3 Dec 1998 12:32:38 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from nlsystems.com (nlsys.demon.co.uk [158.152.125.33]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA18035 for ; Thu, 3 Dec 1998 12:32:31 -0800 (PST) (envelope-from dfr@nlsystems.com) Received: from herring.nlsystems.com (herring.nlsystems.com [10.0.0.2]) by nlsystems.com (8.9.1/8.8.5) with SMTP id UAA63934; Thu, 3 Dec 1998 20:32:01 GMT Date: Thu, 3 Dec 1998 20:32:01 +0000 (GMT) From: Doug Rabson To: Eivind Eklund cc: Mark Tinguely , luigi@labinfo.iet.unipi.it, freebsd-current@FreeBSD.ORG Subject: Re: 3.0 and double operations in device drivers In-Reply-To: <19981203165746.J18661@follo.net> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 3 Dec 1998, Eivind Eklund wrote: > On Thu, Dec 03, 1998 at 09:47:46AM -0600, Mark Tinguely wrote: > > > > My question is: "Is floating point math now taboo in the kernel?" > > > > > > it has always been! > > > > I asked for that one :). remove taboo and replace with "forbidden". > > It always has been. > > (Ie, it has never worked reliably, and this has been a known property > of the design). On the alpha, any floating point instructions executed by the kernel (except some very careful ones during task switching) should cause a panic. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message