[PATCH] powerpc/32s: fix boot failure with DEBUG_PAGEALLOC without KASAN.

[Christoph Hellwig]

On Wed, Aug 14, 2019 at 05:28:35AM +0000, Christophe Leroy wrote:
> When KASAN is selected, the definitive hash table has to be
> set up later, but there is already an early temporary one.
> 
> When KASAN is not selected, there is no early hash table,
> so the setup of the definitive hash table cannot be delayed.

I think you also want to add this information to the code itself
as comments..