From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [Xenomai-help] invalid use of FPU in Xenomai context From: Philippe Gerum In-Reply-To: <450F0451.8070102@domain.hid> References: <450B2BE1.1050105@domain.hid> <20060916042719.M57867@domain.hid> <450F0451.8070102@domain.hid> Content-Type: text/plain Date: Mon, 18 Sep 2006 23:23:18 +0200 Message-Id: <1158614598.5009.71.camel@domain.hid> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Reply-To: rpm@xenomai.org List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jeff Webb Cc: xenomai@xenomai.org On Mon, 2006-09-18 at 15:40 -0500, Jeff Webb wrote: > Jeff Webb wrote: > > Okay... I have found a simple example that exhibits the problem on my > > linux-2.4 system (see attached). I am running xenomai 2.2.2 with the two RTAI > > FIFO patches (and the latest FPU-related patch). > > I still get the same error with xenomai-2.2.3 on my 2.4.33.3 and 2.6.17.13 x86 machines. Did anyone get a chance to try the sample kernel module I posted? > > https://mail.gna.org/public/xenomai-help/2006-09/msg00143.html > > Perhaps this is related to the FPU bug Jan just reported? There's a good chance that both issues are related. Several heads are currently banging on proper walls to precisely spot the issue, since it seems that not all x86 setups are affected. > > https://mail.gna.org/public/xenomai-core/2006-09/msg00138.html > > If so, then maybe the problem is related to the rt-pipe changes... > > > I get two unresolved > > math-related symbols when I try to insert this module on my FC5 2.6 machine, > > so I can't comment on the linux-2.6 behavior at this time. But that's a > > puzzle for another day... > > FYI, I added "-ffast-math -mhard-float" to the CFLAGS to get rid of the unresolved symbols. > > Thanks, > > -Jeff > > _______________________________________________ > Xenomai-help mailing list > Xenomai-help@domain.hid > https://mail.gna.org/listinfo/xenomai-help -- Philippe.