Hi Gavin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14-rc2] [cannot apply to hnaz-linux-mm/master linux/master next-20210716] [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/Gavin-Shan/mm-debug_vm_pgtable-Enhancements/20210719-134236 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2734d6c1b1a089fb593ef6a23d4b70903526fe0c config: arm64-randconfig-r005-20210719 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 5d5b08761f944d5b9822d582378333cc4b36a0a7) 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 # install arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/0day-ci/linux/commit/69db26024e6bd48423ebc83b0f83b7b52217b624 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Gavin-Shan/mm-debug_vm_pgtable-Enhancements/20210719-134236 git checkout 69db26024e6bd48423ebc83b0f83b7b52217b624 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> mm/debug_vm_pgtable.c:445:8: warning: variable 'pud' set but not used [-Wunused-but-set-variable] pud_t pud; ^ mm/debug_vm_pgtable.c:1140:17: warning: variable 'protnone' set but not used [-Wunused-but-set-variable] pgprot_t prot, protnone; ^ mm/debug_vm_pgtable.c:1142:36: warning: variable 'pmd_aligned' set but not used [-Wunused-but-set-variable] unsigned long vaddr, pte_aligned, pmd_aligned; ^ mm/debug_vm_pgtable.c:1143:42: warning: variable 'pgd_aligned' set but not used [-Wunused-but-set-variable] unsigned long pud_aligned, p4d_aligned, pgd_aligned; ^ mm/debug_vm_pgtable.c:1143:29: warning: variable 'p4d_aligned' set but not used [-Wunused-but-set-variable] unsigned long pud_aligned, p4d_aligned, pgd_aligned; ^ mm/debug_vm_pgtable.c:1143:16: warning: variable 'pud_aligned' set but not used [-Wunused-but-set-variable] unsigned long pud_aligned, p4d_aligned, pgd_aligned; ^ mm/debug_vm_pgtable.c:1140:11: warning: variable 'prot' set but not used [-Wunused-but-set-variable] pgprot_t prot, protnone; ^ 7 warnings generated. vim +/pud +445 mm/debug_vm_pgtable.c 5fe77be6bf14bf Shixin Liu 2021-06-30 442 69db26024e6bd4 Gavin Shan 2021-07-19 443 static void __init pud_huge_tests(struct pgtable_debug_args *args) a5c3b9ffb0f404 Anshuman Khandual 2020-08-06 444 { 5fe77be6bf14bf Shixin Liu 2021-06-30 @445 pud_t pud; 5fe77be6bf14bf Shixin Liu 2021-06-30 446 69db26024e6bd4 Gavin Shan 2021-07-19 447 if (!arch_vmap_pud_supported(args->page_prot)) 5fe77be6bf14bf Shixin Liu 2021-06-30 448 return; 5fe77be6bf14bf Shixin Liu 2021-06-30 449 5fe77be6bf14bf Shixin Liu 2021-06-30 450 pr_debug("Validating PUD huge\n"); 5fe77be6bf14bf Shixin Liu 2021-06-30 451 /* 5fe77be6bf14bf Shixin Liu 2021-06-30 452 * X86 defined pud_set_huge() verifies that the given 5fe77be6bf14bf Shixin Liu 2021-06-30 453 * PUD is not a populated non-leaf entry. 5fe77be6bf14bf Shixin Liu 2021-06-30 454 */ 69db26024e6bd4 Gavin Shan 2021-07-19 455 WRITE_ONCE(*(args->pudp), __pud(0)); 69db26024e6bd4 Gavin Shan 2021-07-19 456 WARN_ON(!pud_set_huge(args->pudp, __pfn_to_phys(args->fixed_pud_pfn), 69db26024e6bd4 Gavin Shan 2021-07-19 457 args->page_prot)); 69db26024e6bd4 Gavin Shan 2021-07-19 458 WARN_ON(!pud_clear_huge(args->pudp)); 69db26024e6bd4 Gavin Shan 2021-07-19 459 pud = READ_ONCE(*(args->pudp)); a5c3b9ffb0f404 Anshuman Khandual 2020-08-06 460 } 5fe77be6bf14bf Shixin Liu 2021-06-30 461 #else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ 54b1f4b50ddb0f Gavin Shan 2021-07-19 462 static void __init pmd_huge_tests(struct pgtable_debug_args *args) { } 69db26024e6bd4 Gavin Shan 2021-07-19 463 static void __init pud_huge_tests(struct pgtable_debug_args *args) { } 5fe77be6bf14bf Shixin Liu 2021-06-30 464 #endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ 399145f9eb6c67 Anshuman Khandual 2020-06-04 465 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
