From: Andi Kleen <ak@muc.de>
To: Dave Jones <davej@redhat.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Use of floating point in the kernel
Date: Thu, 08 Jan 2004 05:12:51 +0100 [thread overview]
Message-ID: <m3hdz79iyk.fsf@averell.firstfloor.org> (raw)
In-Reply-To: <1bzv7-4Cw-3@gated-at.bofh.it> (Dave Jones's message of "Thu, 08 Jan 2004 05:00:13 +0100")
Dave Jones <davej@redhat.com> writes:
> On Wed, Jan 07, 2004 at 07:34:06PM -0800, H. Peter Anvin wrote:
>
> > Has anyone considered asking the gcc people to add an -fno-fpu (or
> > -mno-fpu) option, throwing an error if any FP instructions are used?
>
> building with -msoft-float gets you this.
I think they will need an -fno-fpu option for the kernel at some point
anyways. As soon as gcc starts using SSE2 registers for integer
operations on SSE2 targets. My impression is that this point isn't
that far away anymore.
-Andi
next parent reply other threads:[~2004-01-08 4:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1bvUw-7Ry-15@gated-at.bofh.it>
[not found] ` <1bzbF-4cG-5@gated-at.bofh.it>
[not found] ` <1bzv7-4Cw-3@gated-at.bofh.it>
2004-01-08 4:12 ` Andi Kleen [this message]
2004-01-07 23:59 Use of floating point in the kernel Pekka Pietikainen
2004-01-08 3:34 ` H. Peter Anvin
2004-01-08 3:48 ` Dave Jones
2004-01-08 3:52 ` Linus Torvalds
2004-01-08 3:54 ` H. Peter Anvin
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