> Unknown to linux? Well in some sense linux must have set up the memory
> hardware to let the user program access that memory without a page fault..
> so it must be known on some level right? :)
Do a "man mmap". The mmap function will permit you to map any region
(even if no memory is there ) into your program's memory space. You use
mmap together with /dev/mem to access things outside linux memory space.
There's a man page for "mem" as well.
:-) Wayne
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