Guest (outer): 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 (QEMU/KVM via dfbsd-qemu/vm.sh)
Compiler: cc 8.3 [DragonFly] Release/2019-02-22
sysctl vm.vkernel_enable=1 (required to execute a vkernel)
Vkernel: /usr/obj/usr/src/sys/VKERNEL64/kernel.debug (md5 49e9f8ed453c354932ed99a52805f2ac)
  DragonFly 6.5-DEVELOPMENT #0: Wed Oct 7 23:10:40 UTC 2026 (baseline build)
  built: cd /usr/src && make -j6 nativekernel KERNCONF=VKERNEL64
  with DF-5474 link workaround:
    SYSTEM_LD += -Wl,--defsym,__build_id_start=0 -Wl,--defsym,__build_id_end=0
  booted: ./kernel.debug -m 512m -r /vkroot.img -n 1 -e init_path=/bin/vkinit -s
Root image: /vkroot.img (ufs, 1200MB, from DF-5337/5538/5556 rig; /root/vkmem installed)
PoC: /root/vkmem (static, cc -static -O2), sha256(source)=c253c1b2ea109ad85805bed1a2394c9ca4d4e8fd488d612ae8a12c7b20335173
KVA geometry (vkernel): KvaStart=0x8000000000 (512GB), KvaEnd=0x10000000000 (1024GB),
  fixed MAP_FIXED window (vmparam.h:80-81, init.c:609-621); grown frontier kernel_vm_end
  ~ a few hundred MB. Control=+1MB (grown), trigger=+400GB (ungrown), text=0x454780 (image).