Hi "Björn, I love your patch! Yet something to improve: [auto build test ERROR on 7b1e385c9a488de9291eaaa412146d3972e9dec5] url: https://github.com/0day-ci/linux/commits/Bj-rn-T-pel/Optimize-bpf_redirect_map-xdp_do_redirect/20210220-233623 base: 7b1e385c9a488de9291eaaa412146d3972e9dec5 config: s390-randconfig-m031-20210221 (attached as .config) compiler: s390-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/3995bc7a37a3a7975c4a04f668408d5aa31cbe37 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Bj-rn-T-pel/Optimize-bpf_redirect_map-xdp_do_redirect/20210220-233623 git checkout 3995bc7a37a3a7975c4a04f668408d5aa31cbe37 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): s390-linux-ld: kernel/bpf/verifier.o: in function `fixup_bpf_calls': >> verifier.c:(.text+0xa4fc): undefined reference to `get_xdp_redirect_func' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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