Re: [PATCH v1 05/10] powerpc/mm: Do early ioremaps from top to bottom on PPC64 too.

Christophe Leroy's on August 14, 2019 6:11 am:

Until vmalloc system is up and running, ioremap basically
allocates addresses at the border of the IOREMAP area.

On PPC32, addresses are allocated down from the top of the area
while on PPC64, addresses are allocated up from the base of the
area.

 
This series looks pretty good to me, but I'm not sure about this patch.

It seems like quite a small divergence in terms of code, and it looks
like the final result still has some ifdefs in these functions. Maybe
you could just keep existing behaviour for this cleanup series so it
does not risk triggering some obscure regression? Merging behaviour
could be proposed at the end.

Thanks,
Nick