[PATCH 2/3] powerpc/64s/radix: ioremap use ioremap_page_range

[Nicholas Piggin]

Christophe Leroy's on June 20, 2019 2:25 am:
> 
> 
> Le 19/06/2019 à 05:59, Nicholas Piggin a écrit :
>> Christophe Leroy's on June 11, 2019 4:46 pm:
>>>
>>>
>>> Le 10/06/2019 à 05:08, Nicholas Piggin a écrit :
>> I would like to remove the early ioremap or make it into its own
>> function. Re-implement map_kernel_page with ioremap_page_range,
>> allow page tables that don't use slab to avoid the early check,
>> unbolt the hptes mapped in early boot, etc.
> 
> Getting early ioremap out of the picture is a very good idea, it will 
> help making things more common between all platform types. Today we face 
> the fact that PPC32 allocates early io from the top of memory while 
> PPC64 allocates it from the bottom of memory.
> 
> Any idea on how to proceed ?

I have to have a bit better look at other arches and our platform 
code. Without having looked closely at all the details, I would hope 
we could use GENERIC_EARLY_IOREMAP without too much pain.

Thanks,
Nick