== DF-4748 fix.diff real-module compile validation (guest /usr/src, bsd.kmod.mk) ==

--- pristine amdgpu.ko build (make -j4) tail ---
--- amdgpu.ko ---
cc -Wl,--build-id=sha1 -nostdlib -Wl,--hash-style=sysv   -r -Wl,-d -o amdgpu.ko amdgpu_drv.o chash.o
rc=0, amdgpu.ko linked

--- fix.diff applied (patch --fuzz=0, hunk #1 at 385), rebuild ---
rc=0; amdgpu_dm_mst_types.o recompiled 06:52; amdgpu.ko relinked:
  (from session log: -rw-r--r-- amdgpu.ko 3742760 Oct 14 06:52)

--- revert (patch -R) restores pristine byte-exact ---
sha256 after revert: c33f668a2135167702aeb79c318d28fb6abbc1656e0f56752386d4ab97c5aeff (== repo sys/ tree)