writting driver

Hello, I have been trying to write a driver to bee able to read and write to any memory address given by the user. I suspected that I was going to have some problems because of memory violation issues and it turns out I was right.... When I try to access address B8002050 for example I get "Unable to handle kernel paging request at virtual address b8002050"..... Isn't there any way to do this whitout getting errors? I though I could access any memory address using a driver as it is executing as root and has the maximum priority level in the CPU.... The reason I am trying to do this is to check some configuration registers directly, as I am working on an embedded system which is having some issues.... Any ideas on how to do this? Thanks a lot :)

URL: