From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <49B03E9C.70203@domain.hid> Date: Thu, 05 Mar 2009 22:05:32 +0100 From: Wolfgang Grandegger MIME-Version: 1.0 References: <5D63919D95F87E4D9D34FF7748CE2C2A01872F90@domain.hid> <49AFE525.2080401@domain.hid> In-Reply-To: <49AFE525.2080401@domain.hid> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Floating Point Exceptions in RT-Tasks List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: rpm@xenomai.org Cc: xenomai@xenomai.org Philippe Gerum wrote: > roderik.wildenburg@domain.hid wrote: >> On behalf of Thomas I would like to answer : >> >>> Do you have CONFIG_XENO_OPT_DEBUG_NUCLEUS enabled in your >> yes, we can aahhh have this option enabled. >> >>> kconfig, and if so, do >>> you get any message in your kernel log when running fetest? >> no, no message anywhere (/var/log/messages, console, dmesg). >> fetest runs and runs till I sent CTRL-C. I just tried the program fetest on my TQM5200 with a fresh Xenomai 2.4.x and the linuxppc_2_4_devel tree and the excepetion does *not* get triggered. Actually I realize the following wired behavior: /fpu_test ^C ./fpu_test ^C Feb 3 17:16:12 tqm5200 kernel: Xenomai: Switching trivial to secondary mode after exception #1792 from user-space at 0x10001974 (pid 342) Floating point exception bash-2.05b# ./fpu_test ^C bash-2.05b# ./fpu_test ^C bash-2.05b# ./fpu_test After aborting the fpu_test program with ^C, I get the message above, but only after the second try. > Gilles sent you a patch affecting include/asm-powerpc/bits/pod.h a few weeks > ago, that fixed an FPU issue. Are you running with this patch applied? $ svn log include/asm-powerpc/bits/pod.h ------------------------------------------------------------------------ r4600 | gch | 2009-01-31 19:46:37 +0100 (Sat, 31 Jan 2009) | 1 line Is that the patch you have in mind? Wolfgang.