=== DragonFlyBSD Guest Reachability Survey ===
Date: 2026-07-26 (pass-1; re-confirmed 2026-10-12 for this verify run)
Kernel: DragonFly 6.5-DEVELOPMENT #0 (X86_64_GENERIC, INVARIANTS ON)

--- uname -a ---
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

--- PCI devices (NO GPU, NO WiFi, NO SCSI RAID) ---
hostb0@pci0:0:0:0:  chip=0x12378086 (i440FX host bridge)
isab1@pci0:0:1:0:   chip=0x70008086 (PIIX3 ISA bridge)
atapci0@pci0:0:1:1: chip=0x70108086 (PIIX3 ATA)
none0@pci0:0:1:3:   chip=0x71138086 (PIIX4 PM)
vgapci0@pci0:0:2:0: chip=0x11111234 (QEMU dummy VGA - NOT AMD/Intel/NVIDIA)
virtio_pci0@pci0:0:3:0: chip=0x10001af4 (virtio-net)
virtio_pci1@pci0:0:4:0: chip=0x10011af4 (virtio-blk)

--- /dev/dri (after kldload drm) ---
NOT PRESENT - no /dev/dri/card0 or /dev/dri/renderD128

--- kldstat after kldload drm ---
drm.ko loaded (production binary, symbols dma_buf_export/dma_buf_fd/
dma_buf_get/dmabuf_fileops exported) but NO device nodes created (dummy
VGA 0x1234 is claimed by no DRM driver: no i915/amdgpu/radeon attach)

--- Conclusion (DF-2132) ---
The DRM ioctl front door (DRM_IOCTL_PRIME_* on /dev/dri) requires GPU
hardware not present on this QEMU guest. The verified PoC therefore drives
the SAME production drm.ko code via a KLD rig that resolves the production
symbols at runtime and replays the drm_prime.c:802->814->864 composition
in an unprivileged process context (/dev/df2132, mode 0666). On real
hardware with any PRIME-capable GPU, the render node is the unprivileged
front door and no rig is needed (see finding markdown PoC).