When one does an ioremap the kernel maps the given address into its address space and then returns an address. Is there a way to reverse this process... Normally x = ioremap( y, size ); Is there a way to retrieve y, given x? -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/