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Subject: RE: [PATCH/2.6.17-rc4 1/10] Powerpc: Add general support for mpc7
	448h pc2 (Taiga) platform
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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> If I really need to use bat0 or bat1( I see that the general mmu use bat2 and bat3, 
> where should I set up them?
> 
> For tsi108 pci configuration access, I need to map 16Mbyte 
> physical address.  If I do not use an extra bat, I can not get the correct 
> virtual address use ioremap.

What do you mean ? An ioremap will work, it will give you any virtual
address, you just have to store that in a global instead of hard coding
it. Hard coded virtual addresses are bad. Especially for things like PCI
config space that really isn't performance sensitive.

Ben.