Re: [RFC PATCH 2/2] powerpc/mm/hash64: Map all the kernel mapping in the same 0xc range

On 2/19/19 11:28 AM, Nicholas Piggin wrote:

Aneesh Kumar K.V's on February 17, 2019 3:16 pm:

quoted

This patch maps vmap, IO and vmemap regions in the 0xc address range
instead of the current 0xd and 0xf range. This brings the mapping closer
to radix translation mode.

What was the reason for that address layout in the first place?

To bring in closer to radix translation mode and it should also help 
with KASAN implementation.

-aneesh