On Sat, 26 Nov 2022 00:25:21 +1100, Michael Ellerman wrote:

There's no declaration for machine_check_early_boot(), which leads to a
build failure with W=1. Add one.

Applied to powerpc/fixes.

[1/1] powerpc/64s: Add missing declaration for machine_check_early_boot()
      https://git.kernel.org/powerpc/c/2e7ec190a0e38aaa8a6d87fd5f804ec07947febc

cheers