Re: v3.18-stable-queue and v4.1.y-stable-queue build failures

[Guenter Roeck <linux@roeck-us.net>]

On Tue, Jun 07, 2016 at 12:46:16PM -0400, Sasha Levin wrote:
> >>> v4.1, all mips builds:
> >>>
> >>> arch/mips/mm/cache.c: In function '__update_cache':
> >>> arch/mips/mm/cache.c:134:26: error: implicit declaration of function 'kmap_atomic'
> >>> arch/mips/mm/cache.c:142:4: error: implicit declaration of function '__kunmap_atomic'
> >>>
> >>> arch/mips/kernel/setup.c: In function 'arch_mem_init':
> >>> arch/mips/kernel/setup.c:690:2: error: implicit declaration of function 'reserve_bootmem_region'
> >>>
> >>> Guenter
> >>
> >> Thanks Guenter, all should be fixed now.
> >>
> > Confirmed.
> > 
> > Can you let Greg know how you fixed the mips problem in mm/cache.c ? It now affects
> > 4.4, 4.5, and 4.6 as well.
> 
> So the commit that was supposed to get this fix was only introduced in 4.2, so
> I just removed it from the 3.18/4.1 trees, but I suspect Greg will need to do
> something else here.
> 
I ended up reverting 'MIPS: Sync icache & dcache in set_pte_at' as well as
'MIPS: Handle highmem pages in __update_cache'. That results in a passing build
at least for 4.4. No idea if it has side effects, though.

Guenter