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

[Aneesh Kumar K.V]

On 2/19/19 11:28 AM, Nicholas Piggin wrote:
> Aneesh Kumar K.V's on February 17, 2019 3:16 pm:
>> 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