kexec_core.c:undefined reference to `machine_kexec'

kexec_core.c:undefined reference to `machine_kexec'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   6bfb56e93bcef41859c2d5ab234ffd80b691be35
commit: 6261586e0c91db14c34f894f4bc48f2300cff1d4 RISC-V: Add kexec_file support
date:   3 weeks ago
config: riscv-buildonly-randconfig-r002-20220608 (https://download.01.org/0day-ci/archive/20220609/202206091916.0xLwCTGT-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6261586e0c91db14c34f894f4bc48f2300cff1d4
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6261586e0c91db14c34f894f4bc48f2300cff1d4
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   riscv64-linux-ld: kernel/kexec_core.o: in function `.L1364':
>> kexec_core.c:(.text+0x3568): undefined reference to `machine_kexec_cleanup'
   riscv64-linux-ld: kernel/kexec_core.o: in function `__crash_kexec':
>> (.text+0x3b08): undefined reference to `machine_crash_shutdown'
   riscv64-linux-ld: (.text+0x3b14): undefined reference to `machine_kexec'
   riscv64-linux-ld: (.text+0x3b68): undefined reference to `riscv_crash_save_regs'
   riscv64-linux-ld: kernel/kexec_core.o: in function `.L1553':
>> kexec_core.c:(.text+0x44a4): undefined reference to `machine_shutdown'
   riscv64-linux-ld: kernel/kexec_core.o: in function `.L1528':
>> kexec_core.c:(.text+0x44bc): undefined reference to `machine_kexec'
   riscv64-linux-ld: kernel/kexec_file.o: in function `.L440':
>> kexec_file.c:(.text+0x15d4): undefined reference to `machine_kexec_prepare'

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp