Hi Robin, FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d514392f17fd4d386cfadde7f849d97db4ca1fb0 commit: d286a58bc8f4d5cf3246481b4e38e4c0c65550ac [4008/6912] iommu: Tidy up io-pgtable dependencies config: arm-randconfig-c44-20230119 (https://download.01.org/0day-ci/archive/20230122/202301220457.yZrxIDnf-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=d286a58bc8f4d5cf3246481b4e38e4c0c65550ac git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout d286a58bc8f4d5cf3246481b4e38e4c0c65550ac # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> Note: the linux-next/master HEAD d514392f17fd4d386cfadde7f849d97db4ca1fb0 builds fine. It may have been fixed somewhere. All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "free_io_pgtable_ops" [drivers/gpu/drm/panfrost/panfrost.ko] undefined! >> ERROR: modpost: "alloc_io_pgtable_ops" [drivers/gpu/drm/panfrost/panfrost.ko] undefined! Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE Depends on [n]: IOMMU_SUPPORT [=y] && (ARM [=y] || ARM64 || COMPILE_TEST [=y]) && !GENERIC_ATOMIC64 [=y] Selected by [m]: - DRM_PANFROST [=m] && HAS_IOMEM [=y] && DRM [=m] && (ARM [=y] || ARM64 || COMPILE_TEST [=y] && !GENERIC_ATOMIC64 [=y]) && MMU [=y] -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
