From: Norbert Bukuli <norbert.bukuli@mediso.hu>
To: Philippe Gerum <rpm@xenomai.org>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai] Floating point operations in kernel on powerpc
Date: Fri, 15 Feb 2013 16:24:28 +0100 [thread overview]
Message-ID: <511E532C.2010209@mediso.hu> (raw)
In-Reply-To: <511E4B65.5040403@xenomai.org>
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On 2013-02-15 15:51, Philippe Gerum wrote:
> On 02/15/2013 02:31 PM, Norbert Bukuli wrote:
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>>
>> 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
>
Yes, that was the problem, definitely.
> 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.
>
- --
Best regards,
Norbert Bukuli
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prev parent reply other threads:[~2013-02-15 15:24 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
2013-02-15 15:24 ` Norbert Bukuli [this message]
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