Guest (audit QEMU/KVM target, fresh `vm.sh reset with-src` at start of run):
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
cc: cc 8.3 [DragonFly] Release/2019-02-22
Guest /usr/src/sys/dev/drm/radeon/rv730_dpm.c md5 = d993b8a12e7cc99729a7d82f9685be95 (identical to audit tree sys/)
No Radeon GPU / no RV730 hardware in guest: kernel-level trigger hardware-gated; verification via verbatim-replica harness (DF-4492 convention).
Upstream cross-check: torvalds/linux master drivers/gpu/drm/radeon/rv730_dpm.c carries the identical `mpll_ss |= CLK_V(clk_v);` typo in rv730_populate_mclk_value (sclk block in the same file is correct).
End of run: guest source reverted (md5 re-verified), build artifacts removed, guest up and clean.