Hi Kefeng, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20210701] url: https://github.com/0day-ci/linux/commits/Kefeng-Wang/arm64-support-page-mapping-percpu-first-chunk-allocator/20210705-190907 base: fb0ca446157a86b75502c1636b0d81e642fe6bf1 config: i386-randconfig-a015-20210705 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/5f6b5a402ed3e390563ddbddf12973470fd4886d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kefeng-Wang/arm64-support-page-mapping-percpu-first-chunk-allocator/20210705-190907 git checkout 5f6b5a402ed3e390563ddbddf12973470fd4886d # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): mm/vmalloc.c: In function 'vm_area_register_early': >> mm/vmalloc.c:2252:2: error: implicit declaration of function 'kasan_populate_early_vm_area_shadow' [-Werror=implicit-function-declaration] 2252 | kasan_populate_early_vm_area_shadow(vm->addr, vm->size); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/kasan_populate_early_vm_area_shadow +2252 mm/vmalloc.c 2226 2227 /** 2228 * vm_area_register_early - register vmap area early during boot 2229 * @vm: vm_struct to register 2230 * @align: requested alignment 2231 * 2232 * This function is used to register kernel vm area before 2233 * vmalloc_init() is called. @vm->size and @vm->flags should contain 2234 * proper values on entry and other fields should be zero. On return, 2235 * vm->addr contains the allocated address. 2236 * 2237 * DO NOT USE THIS FUNCTION UNLESS YOU KNOW WHAT YOU'RE DOING. 2238 */ 2239 void __init vm_area_register_early(struct vm_struct *vm, size_t align) 2240 { 2241 unsigned long vm_start = VMALLOC_START; 2242 struct vm_struct *tmp; 2243 unsigned long addr; 2244 2245 for (tmp = vmlist; tmp; tmp = tmp->next) 2246 vm_start = (unsigned long)tmp->addr + tmp->size; 2247 2248 addr = ALIGN(vm_start, align); 2249 vm->addr = (void *)addr; 2250 2251 vm_area_add_early(vm); > 2252 kasan_populate_early_vm_area_shadow(vm->addr, vm->size); 2253 } 2254 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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