On Mon, Mar 14, 2022 at 9:06 AM kernel test robot <lkp@xxxxxxxxx> wrote:
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All errors (new ones prefixed by >>):
>
> >> arch/arm/mm/copypage-v4mc.c:70:3: error: implicit declaration of function '__flush_dcache_page' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
> __flush_dcache_page(page_mapping_file(from), from);
> ^
> arch/arm/mm/copypage-v4mc.c:70:3: note: did you mean 'flush_dcache_page'?
> arch/arm/include/asm/cacheflush.h:292:13: note: 'flush_dcache_page' declared here
> extern void flush_dcache_page(struct page *);
> ^
> >> arch/arm/mm/copypage-v4mc.c:74:2: error: implicit declaration of function 'set_top_pte' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
I checked this, and found that the configuration was already broken,
what changed is just the
exact error message that gcc produces, so lkp flags it as a regression.
This is a NOMMU StrongARM1100 config, which has been broken for a long time,
and already have a patch to disallow that configuration because we ran
into another
issue with NOMMU classic processors last week.
Arnd
