The patch titled Subject: xtensa: fix flush_icache_user_range in noMMU configs has been added to the -mm tree. Its filename is xtensa-implement-flush_icache_user_range-fix.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/xtensa-implement-flush_icache_user_range-fix.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/xtensa-implement-flush_icache_user_range-fix.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Max Filippov <jcmvbkbc@xxxxxxxxx> Subject: xtensa: fix flush_icache_user_range in noMMU configs flush_icache_user_range definition for xtensa is placed under preprocessor condition that is not processed in noMMU configurations, resulting in the following build errors: fs/exec.c:1065:3: error: implicit declaration of function `flush_icache_user_range' fs/binfmt_flat.c:857:2: error: implicit declaration of function `flush_icache_user_range' Move definition outside conditional compilation block. Link: http://lkml.kernel.org/r/20200525221556.4270-1-jcmvbkbc@xxxxxxxxx Signed-off-by: Max Filippov <jcmvbkbc@xxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Chris Zankel <chris@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/xtensa/include/asm/cacheflush.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/xtensa/include/asm/cacheflush.h~xtensa-implement-flush_icache_user_range-fix +++ a/arch/xtensa/include/asm/cacheflush.h @@ -107,8 +107,6 @@ void flush_cache_page(struct vm_area_str #define flush_cache_page local_flush_cache_page #endif -#define flush_icache_user_range flush_icache_range - #define local_flush_cache_all() \ do { \ __flush_invalidate_dcache_all(); \ @@ -147,6 +145,8 @@ void local_flush_cache_page(struct vm_ar #endif +#define flush_icache_user_range flush_icache_range + /* Ensure consistency between data and instruction cache. */ #define local_flush_icache_range(start, end) \ do { \ _ Patches currently in -mm which might be from jcmvbkbc@xxxxxxxxx are xtensa-implement-flush_icache_user_range-fix.patch