ld.lld: error: undefined symbol: machine_kexec

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   032dcf09e2bf7c822be25b4abef7a6c913870d98
commit: 6261586e0c91db14c34f894f4bc48f2300cff1d4 RISC-V: Add kexec_file support
date:   2 weeks ago
config: riscv-randconfig-r012-20220605 (https://download.01.org/0day-ci/archive/20220605/202206050554.XnCXKQwp-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0a90b72c432d70aae035727ece4ba80ce820f381)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # 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=clang 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@xxxxxxxxx>

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: machine_kexec_cleanup
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(kimage_free) in archive kernel/built-in.a
--
>> ld.lld: error: undefined symbol: riscv_crash_save_regs
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(__crash_kexec) in archive kernel/built-in.a
--
>> ld.lld: error: undefined symbol: machine_crash_shutdown
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(__crash_kexec) in archive kernel/built-in.a
--
>> ld.lld: error: undefined symbol: machine_kexec
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(__crash_kexec) in archive kernel/built-in.a
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(kernel_kexec) in archive kernel/built-in.a
--
>> ld.lld: error: undefined symbol: machine_shutdown
   >>> referenced by kexec_core.c
   >>> kexec_core.o:(kernel_kexec) in archive kernel/built-in.a
--
>> ld.lld: error: undefined symbol: machine_kexec_prepare
   >>> referenced by kexec_file.c
   >>> kexec_file.o:(__se_sys_kexec_file_load) in archive kernel/built-in.a

-- 
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