Hi, I am learning device drivers and there I came to know about the process address space. Everything we see in the cat /proc/iomem is virtual space then where does this process address space come into place. I mean where is it used ? -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/