Hi Masayoshi, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on efi/next] [cannot apply to v5.4-rc7 next-20191112] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Masayoshi-Mizuma/efi-arm64-Intro... base: https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next config: i386-defconfig (attached as .config) compiler: gcc-7 (Debian 7.4.0-14) 7.4.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): drivers/firmware/efi/efi.c: In function 'memreserve_show': str += sprintf(str, "%llx-%llx\n", ~~~^ %x rsv->entry[i].base, ~~~~~~~~~~~~~~~~~~ drivers/firmware/efi/efi.c:163:33: warning: format '%llx' expects argument of type 'long long unsigned int', but argument 4 has type 'phys_addr_t {aka unsigned int}' [-Wformat=] str += sprintf(str, "%llx-%llx\n", ~~~^ %x drivers/firmware/efi/efi.c:165:5: rsv->entry[i].base + rsv->entry[i].size - 1); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +163 drivers/firmware/efi/efi.c 143 144 static struct linux_efi_memreserve *efi_memreserve_root __ro_after_init; 145 static ssize_t memreserve_show(struct kobject *kobj, 146 struct kobj_attribute *attr, char *buf) 147 { 148 struct linux_efi_memreserve *rsv; 149 unsigned long prsv; 150 char *str = buf; 151 int index, i; 152 153 if (!kobj || !buf) 154 return -EINVAL; 155 156 if (!efi_memreserve_root) 157 return -ENODEV; 158 159 for (prsv = efi_memreserve_root->next; prsv; prsv = rsv->next) { 160 rsv = memremap(prsv, sizeof(*rsv), MEMREMAP_WB); 161 index = atomic_read(&rsv->count); 162 for (i = 0; i < index; i++) 164 rsv->entry[i].base, 165 rsv->entry[i].base + rsv->entry[i].size - 1); 166 memunmap(rsv); 167 } 168 169 return str - buf; 170 } 171 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation