Hi Sven, Thank you for the patch! Yet something to improve: [auto build test ERROR on arm-perf/for-next/perf] [also build test ERROR on linus/master v5.12-rc4 next-20210326] [cannot apply to iommu/next] [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/Sven-Peter/Apple-M1-DART-IOMMU-driver/20210328-154437 base: https://git.kernel.org/pub/scm/linux/kernel/git/will/linux.git for-next/perf config: nios2-randconfig-r016-20210328 (attached as .config) compiler: nios2-linux-gcc (GCC) 9.3.0 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/0day-ci/linux/commit/58778f8d813f5d98aedff621f0b236f60fe1dd2b git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sven-Peter/Apple-M1-DART-IOMMU-driver/20210328-154437 git checkout 58778f8d813f5d98aedff621f0b236f60fe1dd2b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=nios2 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> nios2-linux-ld: drivers/iommu/io-pgtable.o:(.rodata+0x1c): undefined reference to `io_pgtable_apple_dart_init_fns' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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