using io remap in an init func

I am working on a port of linux to the IBM 405.

I need to scan the PCI hardware and to do this I need a tlb entry for
the
indirect io addresses staring at 0xeec00000.  The function that sets up
the
indrect address is specified as an __init.  If I use IOremap here to
remap the
address, will this tlb entry stick around forever or do I need to pin a
tlb entry?

Thanks

Chip
IBM MicroElectronics
RTP, NC

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