Hi, I love your patch! Perhaps something to improve: [auto build test WARNING on hch-configfs/for-next] [also build test WARNING on linus/master v5.10-rc7] [cannot apply to hnaz-linux-mm/master next-20201207] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/ira-weiny-intel-com/Lift-memcpy_-to-from-_page-to-core/20201208-070017 base: git://git.infradead.org/users/hch/configfs.git for-next config: riscv-nommu_k210_defconfig (attached as .config) compiler: riscv64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/23e6d3f08a315c6e70fde3d63a275c91e1dcb0ee git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review ira-weiny-intel-com/Lift-memcpy_-to-from-_page-to-core/20201208-070017 git checkout 23e6d3f08a315c6e70fde3d63a275c91e1dcb0ee # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from drivers/char/mem.c:24: include/linux/highmem.h: In function 'clear_user_highpage': include/linux/highmem.h:229:15: error: implicit declaration of function 'kmap_local_page'; did you mean 'kmap_to_page'? [-Werror=implicit-function-declaration] 229 | void *addr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ | kmap_to_page include/linux/highmem.h:229:15: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] include/linux/highmem.h:231:2: error: implicit declaration of function 'kunmap_local' [-Werror=implicit-function-declaration] 231 | kunmap_local(addr); | ^~~~~~~~~~~~ include/linux/highmem.h: In function 'clear_highpage': include/linux/highmem.h:282:16: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 282 | void *kaddr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/highmem.h: In function 'zero_user_segments': include/linux/highmem.h:291:16: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 291 | void *kaddr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/highmem.h: In function 'copy_user_highpage': include/linux/highmem.h:324:8: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 324 | vfrom = kmap_local_page(from); | ^ include/linux/highmem.h:325:6: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 325 | vto = kmap_local_page(to); | ^ include/linux/highmem.h: In function 'copy_highpage': include/linux/highmem.h:339:8: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 339 | vfrom = kmap_local_page(from); | ^ include/linux/highmem.h:340:6: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 340 | vto = kmap_local_page(to); | ^ In file included from include/linux/blkdev.h:14, from include/linux/backing-dev.h:15, from drivers/char/mem.c:25: include/linux/pagemap.h: In function 'memcpy_page': >> include/linux/pagemap.h:1036:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1036 | char *dst = kmap_local_page(dst_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h:1037:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1037 | char *src = kmap_local_page(src_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memmove_page': include/linux/pagemap.h:1047:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1047 | char *dst = kmap_local_page(dst_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h:1048:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1048 | char *src = kmap_local_page(src_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memcpy_from_page': include/linux/pagemap.h:1056:15: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1056 | char *from = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memcpy_to_page': include/linux/pagemap.h:1063:13: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1063 | char *to = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memset_page': include/linux/pagemap.h:1070:15: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1070 | char *addr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from include/linux/pagemap.h:11, from include/linux/blkdev.h:14, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from include/trace/events/random.h:8, from drivers/char/random.c:348: include/linux/highmem.h: In function 'clear_user_highpage': include/linux/highmem.h:229:15: error: implicit declaration of function 'kmap_local_page'; did you mean 'kmap_to_page'? [-Werror=implicit-function-declaration] 229 | void *addr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ | kmap_to_page include/linux/highmem.h:229:15: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] include/linux/highmem.h:231:2: error: implicit declaration of function 'kunmap_local' [-Werror=implicit-function-declaration] 231 | kunmap_local(addr); | ^~~~~~~~~~~~ include/linux/highmem.h: In function 'clear_highpage': include/linux/highmem.h:282:16: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 282 | void *kaddr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/highmem.h: In function 'zero_user_segments': include/linux/highmem.h:291:16: warning: initialization of 'void *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 291 | void *kaddr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/highmem.h: In function 'copy_user_highpage': include/linux/highmem.h:324:8: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 324 | vfrom = kmap_local_page(from); | ^ include/linux/highmem.h:325:6: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 325 | vto = kmap_local_page(to); | ^ include/linux/highmem.h: In function 'copy_highpage': include/linux/highmem.h:339:8: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 339 | vfrom = kmap_local_page(from); | ^ include/linux/highmem.h:340:6: warning: assignment to 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 340 | vto = kmap_local_page(to); | ^ In file included from include/linux/blkdev.h:14, from include/linux/blk-cgroup.h:23, from include/linux/writeback.h:14, from include/trace/events/random.h:8, from drivers/char/random.c:348: include/linux/pagemap.h: In function 'memcpy_page': >> include/linux/pagemap.h:1036:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1036 | char *dst = kmap_local_page(dst_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h:1037:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1037 | char *src = kmap_local_page(src_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memmove_page': include/linux/pagemap.h:1047:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1047 | char *dst = kmap_local_page(dst_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h:1048:14: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1048 | char *src = kmap_local_page(src_page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memcpy_from_page': include/linux/pagemap.h:1056:15: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1056 | char *from = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memcpy_to_page': include/linux/pagemap.h:1063:13: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1063 | char *to = kmap_local_page(page); | ^~~~~~~~~~~~~~~ include/linux/pagemap.h: In function 'memset_page': include/linux/pagemap.h:1070:15: warning: initialization of 'char *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1070 | char *addr = kmap_local_page(page); | ^~~~~~~~~~~~~~~ drivers/char/random.c: At top level: drivers/char/random.c:2296:6: warning: no previous prototype for 'add_hwgenerator_randomness' [-Wmissing-prototypes] 2296 | void add_hwgenerator_randomness(const char *buffer, size_t count, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +1036 include/linux/pagemap.h 1031 1032 static inline void memcpy_page(struct page *dst_page, size_t dst_off, 1033 struct page *src_page, size_t src_off, 1034 size_t len) 1035 { > 1036 char *dst = kmap_local_page(dst_page); 1037 char *src = kmap_local_page(src_page); 1038 memcpy(dst + dst_off, src + src_off, len); 1039 kunmap_local(src); 1040 kunmap_local(dst); 1041 } 1042 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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