Hi Andrew, After merging the akpm-current tree, today's linux-next build (powerpc ppc64_defconfig) failed like this: mm/cma.c: In function 'cma_declare_contiguous': mm/cma.c:288:4: error: implicit declaration of function 'phys_to_virt' [-Werror=implicit-function-declaration] kmemleak_ignore(phys_to_virt(addr)); ^ Caused by commit 2a70e5a78672 ("mm/cma: ake kmemleak ignore CMA regions"). I added the following fix patch: From: Stephen Rothwell Date: Mon, 27 Oct 2014 15:25:09 +1100 Subject: [PATCH] mm/cma: include linux/io.h for phys_to_virt() Signed-off-by: Stephen Rothwell --- mm/cma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/cma.c b/mm/cma.c index 471fcfef043b..c22d7a8e0e3b 100644 --- a/mm/cma.c +++ b/mm/cma.c @@ -33,6 +33,7 @@ #include #include #include +#include struct cma { unsigned long base_pfn; -- Cheers, Stephen Rothwell sfr@canb.auug.org.au