From mboxrd@z Thu Jan 1 00:00:00 1970 Message-Id: Date: Wed, 06 Dec 2006 15:39:42 +0100 From: "Nicolas BLANCHARD" Subject: [Xenomai-help] I/O privilege losted and killed message Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=__PartB3978D3E.0__=" List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org --=__PartB3978D3E.0__= Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Disposition: inline Hello, Sometime i lose my i/o privilege put with the system call ioperm (in the main function of my program). My application stop with a "killed" message in the console and in /proc/xenomai/fault i've an "general fault". To ignore this problem, i use the call system iopl (with full privilege) or recall ioperm before each inb or outb. But there is a problem, why i/o privilege are losted ? In attachment you can find an archive with an example (application and source) witch show the problem. This program has 2 task : - task_1 priority 23 period 100 ms, lock a mutex, access to /dev/rtc, unlock the mutex, outb on hardware. - task 2 priority 25 period 1 ms, do nothing ! I put a 1 ms period to task_2 because it's near the speedest period on my cpu (166 MHz). With this period it stop immediatly. If i put 10 ms it's need 1 or 2 minutes. On my Pentium 4 (Ubuntu on VmWare worstation under WindowsXP), i put 30 ms (the more speed before overrun). If i use iopl (and not ioperm), no problem. If i just have task_1, no problem. If i don't use mutex (lock for Rtc access) on task_2, no problem. I use Xenomai Xenomai 2.3-rc2 (adeos 1.5-02), same probleme with 2.2.3. If you have an idea. thanks nicolas blanchard --=__PartB3978D3E.0__= Content-Type: application/octet-stream; name="xeno-Nico_04.tar.gz" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="xeno-Nico_04.tar.gz" H4sICKzQdkUAA2ZyLjEzMzE5LjAueGVuby1OaWNvXzA0LnRhcgDUWntwVNd5P+feu9IFLWj1AAOS zQqELTWwqxePOGCeAmFjjEHCD4zXq90r7YZ9efdeRTTQCC9gKTK27KQ2dR8B263jJPXQemJ37KSG QLFpOq3HaYNnMtOxm9hdYpzBU0JlEKjfdx67dy/CTjzOH72jo3N/3/ed7/vO437nsaffSCQXbIyG koGmNn/KSEeT4WgokDbJF/g0wbN44ULMmxcvbLLn8LS2tDYvJs1NC1sXLlwIjGbS1NzW3NJKvE1f pBPXeqyMGUx7vSQBbfBpcp/F/3/6fKN9w1pKaR4rRCWIDg1qehvkfzGX09uIl5SSBjIX8hKGIQ2A DKR34R2TC5IGSYVUDUqq92g6pirAVYJHRWIPlMVUW0EIJixPPJzPaIeBBykChL2QSgRfgawJ+E3A w/QOYEwlwgamBpBvANuYvIC9Nt6d75vhidpClvfHot3+WHhBLJqw+n2ZpK+F0z3C93Ubu0Rb8YRP hbAxE9IsQbte5G5IZZAqhVyJaI+pkKZDmo3tBekGrPcEfqkOLG3qDvok2zv6W27zeQoR7SueaZCu gzQDUimkyYJeM4F9j8hvprwONaIDHxR16hL41wLPFvJLBV4g8HqBl6PvD2vM/Uqw3C74nYJ/r8Bf 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