vkernel pid=17152
=== vkernel alive? ===
ALIVE
=== console (from root mount) ===
Using anonymous memory (512 MB)
Copyright (c) 2003-2026 The DragonFly Project.
Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
DragonFly 6.5-DEVELOPMENT #1: Wed Oct  7 23:21:12 UTC 2026
    root@dfbsd:/usr/obj/usr/src/sys/VKERNEL64
real memory = 536870912 (524288K bytes)
avail memory = 517398528 (505272K bytes)
DragonFly/MP: Multiprocessor
 cpu0 (BSP)
CPU Topology: cores_per_chip: 1; threads_per_core: 1; chips_per_package: 1;
Initialize MI interrupts for 1 cpus
initclocks
WARNING: KERNBASE being used
interrupt uses mplock: swi_taskq
wdog: In-kernel automatic watchdog reset enabled
vkd0: <Virtual disk> 
vkd0: 1200MB (2457600 512 byte sectors)
md0: Malloc disk
vkd0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
md0: MBR magic not found; assume a COMPATIBILITY_SLICE (s0)
ipfw2 initialized, default to accept, logging disabled
DUMMYNET initialized (011031)
CAM: Configuring 0 busses
CAM: finished configuring all busses
Mounting root from ufs:vkd0s0a
no disk named 'vkd0s0a'
setrootbyname failed
ffs_mountroot: can't find rootvp
Root mount failed: 6
Mounting root from ufs:vkd0s1a
no disk named 'vkd0s1a'
setrootbyname failed
ffs_mountroot: can't find rootvp
Root mount failed: 6

Manual root filesystem specification:
  <fstype>:<device>  Specify root (e.g. ufs:da0s1a)
  ?                  List valid disk boot devices
  panic              Just panic
  abort              Abort manual input

mountroot> ufs:vkd0
Mounting root from ufs:vkd0
DMA space used: 0k, remaining available: 0k
Mounting devfs
Cannot read termcap database;
using dumb terminal settings.
sh: can't access tty; job control turned off
# /root/vkmem 0x454780; echo TEXT_RC=$?; sleep 2
DF5579 mode=0x454780 offset=0x454780 (KVA=[0x8000000000,0x10000000000))
open ok, preading 8 bytes...
pread returned 8 errno=0 (ok)
bytes: 41 56 41 55 41 54 53 48
DF5579_0x454780_SURVIVED
TEXT_RC=0
# /root/vkmem control; echo CTL_RC=$?; sleep 2
DF5579 mode=control offset=0x8000100000 (KVA=[0x8000000000,0x10000000000))
open ok, preading 8 bytes...
pread returned -1 errno=14 (Bad address)
DF5579_control_SURVIVED
CTL_RC=0
# /root/vkmem trigger; echo TRIGGER_RC=$?; sleep 2
DF5579 mode=trigger offset=0xe400000000 (KVA=[0x8000000000,0x10000000000))
open ok, preading 8 bytes...
pread returned -1 errno=14 (Bad address)
DF5579_trigger_SURVIVED
TRIGGER_RC=0
# echo VKDONE
VKDONE
#