Hi all,
I've to store and restore the current MMU setup
in the context of open firmware and switch back
and forth from the kernel without destroying OF.
I want to bringup the kernel with its own 
translation enabled but, make OF calls as and 
when required.

First, I'm trying to see if I can get the current 
MMU setup. I *don't* see any 'call-method' for 
'MMU' to obtain available and existing translation 
enabled. Is there a way to get this info?
Second, Can I swap ISRs before entering and on
re-entering the kernel? If yes, how do I store and
restore them?

I would appreciate any help/ suggestions.
Thanks,
Sakthi

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