On Wed, 10 Mar 2021 12:10:34 +0000 (UTC), Christophe Leroy wrote:

The code relies on constant folding of cpu_has_feature() based
on possible and always true values as defined per
CPU_FTRS_ALWAYS and CPU_FTRS_POSSIBLE.

Build failure is encountered with for instance
book3e_all_defconfig on kisskb in the AMDGPU driver which uses
cpu_has_feature(CPU_FTR_VSX_COMP) to decide whether calling
kernel_enable_vsx() or not.

[...]

Applied to powerpc/fixes.

[1/1] powerpc: Force inlining of cpu_has_feature() to avoid build failure
      https://git.kernel.org/powerpc/c/eed5fae00593ab9d261a0c1ffc1bdb786a87a55a

cheers