tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next head: 63cd06c67a2f46009da6e88ca46f9c7231ab8998 commit: f16dc95481e2ef2c385008f8b7bd382ea6919ee2 [1/5] swiotlb: Add swiotlb bounce buffer remap function for HV IVM config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20211220/202112202134.o20RMLOK-lk...) compiler: s390-linux-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://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?... git remote add hyperv https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git git fetch --no-tags hyperv hyperv-next git checkout f16dc95481e2ef2c385008f8b7bd382ea6919ee2 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): s390-linux-ld: kernel/dma/swiotlb.o: in function `swiotlb_update_mem_attributes': >> swiotlb.c:(.init.text+0x146): undefined reference to `memremap'