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Subject: Re: CONFIG_DEBUG_PAGEALLOC generates WARN_ON() in ppc32 hash
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Kumar Gala <galak@kernel.crashing.org>
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> > Note that C_D_P doesn't work on hash32 anyway...
> 
> really, what mmu config does it work on ? just hash64?

Pretty much :-) It's implemented for hash32 but there are issues
with the BAT mapping that were never quite resolved.

Cheers,
Ben.