Hi Nicholas,

I love your patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on next-20221216]
[cannot apply to powerpc/fixes linus/master v6.1]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Nicholas-Piggin/powerpc-Misc-early-boot-fixes/20221216-200425
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
patch link:    https://lore.kernel.org/r/20221216115930.2667772-4-npiggin%40gmail.com
patch subject: [PATCH 3/4] powerpc/64: Move paca allocation to early_setup()
config: powerpc-allmodconfig
compiler: powerpc-linux-gcc (GCC) 12.1.0
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://github.com/intel-lab-lkp/linux/commit/914e5943b023f1f74d0c717e29daf3b0199512cc
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Nicholas-Piggin/powerpc-Misc-early-boot-fixes/20221216-200425
        git checkout 914e5943b023f1f74d0c717e29daf3b0199512cc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=powerpc 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 >>):

   powerpc-linux-ld: arch/powerpc/kernel/prom.o: in function `early_init_dt_scan_cpus':
>> prom.c:(.init.text+0xb3e): undefined reference to `boot_cpu_hwid'
>> powerpc-linux-ld: prom.c:(.init.text+0xb56): undefined reference to `boot_cpu_hwid'
   powerpc-linux-ld: prom.c:(.init.text+0xb6a): undefined reference to `boot_cpu_hwid'

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