On Thu, 24 Aug 2023 22:28:49 +1000, Michael Ellerman wrote:

Christophe reported that the change to ARCH_FORCE_MAX_ORDER to limit the
range to 10 had broken his ability to configure hugepages:

  # echo 1 > /sys/kernel/mm/hugepages/hugepages-8192kB/nr_hugepages
  sh: write error: Invalid argument

Several of the powerpc defconfigs previously set the
ARCH_FORCE_MAX_ORDER value to 12, via the definition in
arch/powerpc/configs/fsl-emb-nonhw.config, used by:

[...]

Applied to powerpc/fixes.

[1/1] powerpc/mm: Allow ARCH_FORCE_MAX_ORDER up to 12
      https://git.kernel.org/powerpc/c/ff9e8f41513669e290f6e1904e1bc75950584491

cheers