tree: git://github.com/kvm-riscv/linux.git riscv_kvm_master head: 36e7b3ba5f5456ef4f2d7989b06c4f1fea368e6f commit: b58d6e216092eadb0679aea8043c7ba7584a0802 [5/21] RISC-V: Add initial skeletal KVM support config: riscv-allmodconfig (attached as .config) compiler: riscv64-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 git checkout b58d6e216092eadb0679aea8043c7ba7584a0802 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv 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 >>): make[2]: *** [scripts/Makefile.headersinst:63: usr/include/asm/kvm.h] Error 1 make[2]: Target '__headers' not remade because of errors. make[1]: *** [Makefile:1259: headers] Error 2 arch/riscv/kernel/asm-offsets.c:14:6: warning: no previous prototype for 'asm_offsets' [-Wmissing-prototypes] 14 | void asm_offsets(void) | ^~~~~~~~~~~ make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:185: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org