Guest (audit QEMU/KVM target, was UP at check time):
DragonFly dfbsd 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026
    root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64

PCI devices: i440FX host bridge, PIIX3 ISA/IDE, PIIX4 ACPI (none0),
vgapci0 = chip 0x11111234 (QEMU virtio-gpu / bochs — NOT Intel i915),
virtio-net, virtio-blk.

NO CardBus bridge (PCI class 0607), NO pccard/cbb/exca devices in devinfo,
NO drm/i915/exca/pccbb kernel modules loaded.

Conclusion: exca.c and intel_fbdev.c code paths cannot execute on this
guest; all findings from this batch are hardware-gated and were verified by
source-trace only. Guest left UP and clean (read-only commands only).