From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <511E532C.2010209@mediso.hu> Date: Fri, 15 Feb 2013 16:24:28 +0100 From: Norbert Bukuli MIME-Version: 1.0 References: <511B94E4.2070708@mediso.hu> <511B9901.7040104@xenomai.org> <511BB60E.7090900@mediso.hu> <511BCA3E.4050705@xenomai.org> <511C989C.7070700@mediso.hu> <511E2846.8040206@xenomai.org> <511E38CD.8080301@mediso.hu> <511E4B65.5040403@xenomai.org> In-Reply-To: <511E4B65.5040403@xenomai.org> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai] Floating point operations in kernel on powerpc List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Philippe Gerum Cc: xenomai@xenomai.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 2013-02-15 15:51, Philippe Gerum wrote: > 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 > 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEcBAEBAgAGBQJRHlMsAAoJEJEs22zQJ00Su18IALszpx85WwK8kR7U/kgRg9ex Y4Fod11O+erU/dRpAwVhvxK8mK+HO06m0GARAadkDUjQJjFmjOUyEs6p71oFGRkQ +l6/IJOnUCVOjOVO5JLhYjsyoeh8VnQtMcI9IUIvoukSNPngyr41UMOTFp7traXj Mdnjbt2Spk8CY3u2JX28SbfzEjSBmmnQajTJy9mOtkrpXyRt4D6Pbsyb4M1gVD5N LbCX09/Vj6B9yJrWk1bvKxm7Lbbin2O896k/tTTh5ZxH0HyS9ZnTLrKKDWN65ZMq sJZg84cN23U8vv3WJVwhdRmXvZ8ub8eLjM9R1gmK89F7v4+Arwsou8VQv2EBbjY= =yprj -----END PGP SIGNATURE-----