Guest: DragonFly dfbsd 6.5-DEVELOPMENT #0 Thu Jul 2 06:02:54 UTC 2026 X86_64_GENERIC x86_64
kern.osreldate=600519  kern.ident=X86_64_GENERIC

Hardware gate evidence (2026-09-25, df-bsd-reviewer):
  $ ls -l /dev/iir* /dev/cxm*
      ls: /dev/cxm*: No such file or directory
      ls: /dev/iir*: No such file or directory
  $ ls /boot/kernel/iir.ko /boot/kernel/cxm.ko /boot/kernel/cxm_iic.ko
      /boot/kernel/cxm.ko
      /boot/kernel/cxm_iic.ko
      /boot/kernel/iir.ko
  $ kldload iir
      kldload: can't load iir: module already loaded or in kernel
  $ ls -l /dev/iir*      (after)
      ls: /dev/iir*: No such file or directory
  $ pciconf -l | wc -l   → 7 devices, all QEMU i440fx defaults
      hostb0 (0x12378086), isab1 (0x70008086), atapci0 (0x70108086),
      none0 (0x71138086), virtio disk/net
      — NO vendor 0x1119 (ICP vortex) and NO Intel device 0x600 RAID HBA
  ⇒ iir_pci_probe() never matches; iir_attach()/gdt_make_dev() never run;
    the iir_ctrl.c ioctl surface does not exist on this guest.

Driver perms when the HW does exist: make_dev(UID_ROOT, GID_OPERATOR,
S_IRUSR|S_IWUSR, "iir") — iir_ctrl.c:100-106 → root-only node.