From owner-freebsd-hackers Fri Mar 9 18:11:10 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.matriplex.com (ns1.matriplex.com [208.131.42.8]) by hub.freebsd.org (Postfix) with ESMTP id 8D76737B719 for ; Fri, 9 Mar 2001 18:11:08 -0800 (PST) (envelope-from rh@matriplex.com) Received: from mail.matriplex.com (mail.matriplex.com [208.131.42.9]) by mail.matriplex.com (8.9.2/8.9.2) with ESMTP id SAA69861 for ; Fri, 9 Mar 2001 18:11:02 -0800 (PST) (envelope-from rh@matriplex.com) Date: Fri, 9 Mar 2001 18:11:01 -0800 (PST) From: Richard Hodges To: freebsd-hackers@FreeBSD.ORG Subject: Re: Kernel area libmish stuff In-Reply-To: <200103100130.f2A1UQj39856@earth.backplane.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, 9 Mar 2001, Matt Dillon wrote: > You can't safely do FP instructions in the kernel. I do not > believe the FP context is saved/restored between processes in kernel > mode, only from user mode. The kernel saves and restores the fp state > in the few places it uses FP instructions (for memory copying). > In anycase, I think there'd be a problem here. The last time I tried using FP in a device driver, it caused kernel panics (I hate it when that happens...) -Richard ------------------------------------------- Richard Hodges | Matriplex, inc. Product Manager | 769 Basque Way rh@matriplex.com | Carson City, NV 89706 775-886-6477 | www.matriplex.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message