Hi Shannon, [FYI, it's a private test report for your RFC patch.] [auto build test ERROR on kvmarm/next] [also build test ERROR on v5.4-rc4] [cannot apply to next-20191025] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Shannon-Zhao/Support-KVM-being-compiled-as-a-kernel-module-on-arm64/20191027-144439 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next config: arm64-allnoconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot All errors (new ones prefixed by >>): arch/arm64/kernel/fpsimd.o: In function `sve_vq_available': >> fpsimd.c:(.text+0x7c): undefined reference to `sve_vq_map' fpsimd.c:(.text+0x7c): relocation truncated to fit: R_AARCH64_ADR_PREL_PG_HI21 against undefined symbol `sve_vq_map' fpsimd.c:(.text+0x84): undefined reference to `sve_vq_map' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation