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

[Nicholas Piggin]

Aneesh Kumar K.V's on February 19, 2019 4:00 pm:
> 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.

No I mean the old implementation. Your change seems fine, it would just
be good to know what the downside (if any) is from changing. Maybe it 
was just to make debugging slightly simpler?

Thanks,
Nick