Calling function from address

Mulyadi Santosa mulyadi.santosa at
Wed Jun 8 05:52:14 EDT 2011

On Wed, Jun 8, 2011 at 03:47, Micha M. <kernelnewbies at> wrote:
> Hi!
> Is it possible to call a function that is somewere in the physical-address
> space? So I'd like to jump to a certain physical address, execute the code
> there and then return to my kernel module.
> I already tried to ioremap that address and cast the new address to a
> funtion pointer and then call the function, but there where some page
> faults.

Interesting, and after page fault....the code is still not executed?

what code(s) do you call? user mode? kernel mode?


Mulyadi Santosa
Freelance Linux trainer and consultant


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