Hi Henry,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v5.14-rc1 next-20210715]
[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/Henry-Willard/arm64-kexec-add-support-for-kexec-with-spin-table/20210715-014204
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
config: arm64-randconfig-r011-20210714 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8d69635ed9ecf36fd0ca85906bfde17949671cbe)
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 arm64 cross compiling tool for clang build
        # apt-get install binutils-aarch64-linux-gnu
        # https://github.com/0day-ci/linux/commit/3dd4112e1b67732182a5e12891867db4e139980c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Henry-Willard/arm64-kexec-add-support-for-kexec-with-spin-table/20210715-014204
        git checkout 3dd4112e1b67732182a5e12891867db4e139980c
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   aarch64-linux-gnu-ld: arch/arm64/kernel/smp_spin_table.o: in function `cpu_soft_restart':
>> smp_spin_table.c:(.text+0x524): undefined reference to `__cpu_soft_restart'
   aarch64-linux-gnu-ld: arch/arm64/kernel/smp_spin_table.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `__cpu_soft_restart' which may bind externally can not be used when making a shared object; recompile with -fPIC
   smp_spin_table.c:(.text+0x524): dangerous relocation: unsupported relocation
>> aarch64-linux-gnu-ld: smp_spin_table.c:(.text+0x528): undefined reference to `__cpu_soft_restart'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org