Hi Mike, I love your patch! Yet something to improve: [auto build test ERROR on b2d229d4ddb17db541098b83524d901257e93845] url: https://github.com/intel-lab-lkp/linux/commits/Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242 base: b2d229d4ddb17db541098b83524d901257e93845 config: arm-randconfig-r015-20220424 (https://download.01.org/0day-ci/archive/20220425/202204250429.nq0alVBK-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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://github.com/intel-lab-lkp/linux/commit/635763878be30ab45f350cdcffba3d8e71089942 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Mike-Rapoport/arm-64-memremap-don-t-abuse-pfn_valid-to-ensure-presence-of-linear-map/20220425-012242 git checkout 635763878be30ab45f350cdcffba3d8e71089942 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arm-linux-gnueabi-ld: kernel/iomem.o: in function `memremap': >> iomem.c:(.text+0x36): undefined reference to `arch_memremap_can_ram_remap' arm-linux-gnueabi-ld: drivers/gpu/drm/drm_gem_shmem_helper.o: in function `drm_gem_shmem_fault': drm_gem_shmem_helper.c:(.text+0x54): undefined reference to `vmf_insert_pfn' Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for DRM_GEM_SHMEM_HELPER Depends on HAS_IOMEM && DRM && MMU Selected by - DRM_SSD130X && HAS_IOMEM && DRM -- 0-DAY CI Kernel Test Service https://01.org/lkp
