[PATCH 2/5] mm/memremap_pages: Introduce memremap_compat_align()

[Aneesh Kumar K.V]

On 2/6/20 11:21 AM, Dan Williams wrote:
....

>>>
>>> Link: http://lore.kernel.org/r/CAPcyv4gBGNP95APYaBcsocEa50tQj9b5h__83vgngjq3ouGX_Q@mail.gmail.com
>>> Reported-by: Aneesh Kumar K.V <aneesh.kumar at linux.ibm.com>
>>> Reported-by: Jeff Moyer <jmoyer at redhat.com>
>>> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
>>> Cc: Paul Mackerras <paulus at samba.org>
>>> Cc: Michael Ellerman <mpe at ellerman.id.au>
>>> Signed-off-by: Dan Williams <dan.j.williams at intel.com>
>>> ---
>>>   arch/powerpc/include/asm/io.h |   10 ++++++++++
>>>   drivers/nvdimm/pfn_devs.c     |    2 +-
>>>   include/linux/io.h            |   23 +++++++++++++++++++++++
>>>   include/linux/mmzone.h        |    1 +
>>>   4 files changed, 35 insertions(+), 1 deletion(-)
>>
>> The powerpc change here looks fine to me.
>>
>> Acked-by: Michael Ellerman <mpe at ellerman.id.au> (powerpc)
> 
> Thanks Michael, unfortunately the kbuild robot just woke up and said
> that mips does not like including mmzone.h from io.h. The
> entanglements look intractable.
> 
> Is there a file I can stash a strong definition of
> memremap_compat_align(), maybe arch/powerpc/mm/mem.c? Then I can put a
> generic __weak definition in mm/memremap.c rather than play header
> file include games.
> 


arch/powerpc/mm/ioremap.c ?

-aneesh