From: Philippe Gerum <rpm@xenomai.org>
To: Norbert Bukuli <norbert.bukuli@mediso.hu>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] Floating point operations in kernel on powerpc
Date: Fri, 15 Feb 2013 15:51:17 +0100 [thread overview]
Message-ID: <511E4B65.5040403@xenomai.org> (raw)
In-Reply-To: <511E38CD.8080301@mediso.hu>
On 02/15/2013 02:31 PM, Norbert Bukuli wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Thank you again for your kind help!
> I am really sorry for the confusing question. Now we are compiling
> kernel modules only. Afterwards we port our application from RTAI,
> kernelspace to Xenomai, kernelspace will we port from kernelspace to
> userspace.
> I found what makes the problem. The CONFIG_CC_OPTIMIZE_FOR_SIZE kernel
> option was set on. After I turned it off, the compilation was successful.
I guess you are referring to that issue brought in by gcc releases >= 4.4.x?
http://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg17189.html
http://gcc.gnu.org/ml/gcc-patches/2008-04/msg01678.html
It looks like the suggested kernel patch to fix it did not make its way
to the kernel. Bottom line is that it's not fpu related actually. This
is definitely good material for the Xenomai wiki.
--
Philippe.
next prev parent reply other threads:[~2013-02-15 14:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-13 13:28 [Xenomai] Floating point operations in kernel on powerpc Norbert Bukuli
2013-02-13 13:45 ` Philippe Gerum
2013-02-13 15:49 ` Norbert Bukuli
2013-02-13 17:15 ` Philippe Gerum
2013-02-14 7:56 ` Norbert Bukuli
2013-02-14 15:28 ` Norbert Bukuli
2013-02-14 19:27 ` Gilles Chanteperdrix
2013-02-15 12:21 ` Philippe Gerum
2013-02-15 13:31 ` Norbert Bukuli
2013-02-15 14:51 ` Philippe Gerum [this message]
2013-02-15 15:24 ` Norbert Bukuli
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