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Date:      Thu, 3 Dec 1998 20:32:01 +0000 (GMT)
From:      Doug Rabson <dfr@nlsystems.com>
To:        Eivind Eklund <eivind@yes.no>
Cc:        Mark Tinguely <tinguely@plains.NoDak.edu>, luigi@labinfo.iet.unipi.it, freebsd-current@FreeBSD.ORG
Subject:   Re: 3.0 and double operations in device drivers
Message-ID:  <Pine.BSF.4.01.9812032031040.367-100000@herring.nlsystems.com>
In-Reply-To: <19981203165746.J18661@follo.net>

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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



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