Hi James, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20230217] [cannot apply to kvm/queue shuah-kselftest/next shuah-kselftest/fixes arnd-asm-generic/master linus/master kvm/linux-next v6.2-rc8 v6.2-rc7 v6.2-rc6 v6.2-rc8] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/James-Houghton/hugetlb-don-t-set-PageUptodate-for-UFFDIO_CONTINUE/20230218-083216 patch link: https://lore.kernel.org/r/20230218002819.1486479-14-jthoughton%40google.com patch subject: [PATCH v2 13/46] hugetlb: add hugetlb_hgm_walk and hugetlb_walk_step config: arm64-randconfig-r005-20230217 (https://download.01.org/0day-ci/archive/20230219/202302190101.aoXrbN26-lkp@xxxxxxxxx/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db89896bbbd2251fff457699635acbbedeead27f) 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/intel-lab-lkp/linux/commit/7e55fe945a1b5f042746277050390bdeba9e22d2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review James-Houghton/hugetlb-don-t-set-PageUptodate-for-UFFDIO_CONTINUE/20230218-083216 git checkout 7e55fe945a1b5f042746277050390bdeba9e22d2 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202302190101.aoXrbN26-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: hugetlb_walk_step >>> referenced by hugetlb.c >>> mm/hugetlb.o:(__hugetlb_hgm_walk) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
