From: "H. Peter Anvin" <hpa@zytor.com>
To: Linus Torvalds <torvalds@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Use of floating point in the kernel
Date: Wed, 07 Jan 2004 19:54:39 -0800 [thread overview]
Message-ID: <3FFCD47F.1010007@zytor.com> (raw)
In-Reply-To: <Pine.LNX.4.58.0401071948470.2131@home.osdl.org>
Linus Torvalds wrote:
>
> We really should, but there really are some rare cases where it is
> actually ok.
>
> In particular, you _can_ do math, if you just do the proper
> "kernel_fpu_begin()"/"kernel_fpu_end()" around it, and you have reason to
> believe that you can assume a math processor exists.
>
> Is it needed? I dunno. I'd frown on it in general, but I don't see it
> being fundamentally wrong under the rigth circumstances.
>
Sure; however, perhaps those can be marked separately in the Makefile.
-hpa
next prev parent reply other threads:[~2004-01-08 3:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
[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
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