[PATCH v1 1/4] powerpc/fixmap: don't clear fixmap area in paging_init()

[Christophe Leroy]

Le 27/11/2019 à 15:43, Christophe Leroy a écrit :
> 
> 
> Le 26/11/2019 à 02:13, Michael Ellerman a écrit :
>> On Thu, 2019-09-12 at 13:49:41 UTC, Christophe Leroy wrote:
>>> fixmap is intended to map things permanently like the IMMR region on
>>> FSL SOC (8xx, 83xx, ...), so don't clear it when initialising paging()
>>>
>>> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>
>>
>> Applied to powerpc next, thanks.
>>
>> https://git.kernel.org/powerpc/c/f2bb86937d86ebcb0e52f95b6d19aba1d850e601
>>
> 
> Hi,
> 
> What happened ?
> 
> It looks like it is gone in today's powerpc next.
> 

I see it back today in powerpc/merge, thanks.

The issue is it is crashing with HIGHMEM, indeed exactly the same as you 
saw with "[PATCH] powerpc/8xx: Fix permanently mapped IMMR region.", 
since that was exactly the same code.

I sent a fix for it, and I also rebased "[PATCH] powerpc/8xx: Fix 
permanently mapped IMMR region." into v2 to exclude from it the already 
merged part.

It would be wise if you could merge both.

Thanks
Christophe