Hi Atish, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.8-rc5 next-20200717] [cannot apply to efi/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/Atish-Patra/Add-UEFI-support-for... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9ebcfadb0610322ac537dd7aa5d9cbc2b2894c68 config: riscv-rv32_defconfig (attached as .config) compiler: riscv32-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 # 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 warnings (new ones prefixed by >>): 59 | void __noreturn efi_enter_kernel(unsigned long entrypoint, unsigned long fdt, | ^~~~~~~~~~~~~~~~ 76 | efi_status_t handle_kernel_image(unsigned long *image_addr, | ^~~~~~~~~~~~~~~~~~~ vim +/efi_enter_kernel +59 drivers/firmware/efi/libstub/riscv-stub.c 58 60 unsigned long fdt_size) 61 { 62 unsigned long stext_offset = _start_kernel - _start; 63 unsigned long kernel_entry = entrypoint + stext_offset; 64 jump_kernel_func jump_kernel = (jump_kernel_func)kernel_entry; 65 66 /* 67 * Jump to real kernel here with following constraints. 68 * 1. MMU should be disabled. 69 * 2. a0 should contain hartid 70 * 3. a1 should DT address 71 */ 72 csr_write(CSR_SATP, 0); 73 jump_kernel(hartid, fdt); 74 } 75 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org