From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47E9B406.8030407@domain.hid> Date: Tue, 25 Mar 2008 22:25:10 -0400 From: Tomas Kalibera MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Xenomai-help] Direct access to I/O ports and physical memory from user-space List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org Hello, is it possible to access I/O port on x86 solely from Xenomai user-space primary domain ? I assume that iopl() and then outb(), inb() should work. But, how to avoid switches to secondary domain ? Similarly, for physical memory, there is an example in Xenomai distribution that mmaps /dev/mem. Is there a way to avoid switches here ? Thanks, Tomas