OK, hold onto yer butts!
Launching APs: 2 6 20 34 53 12 15 66 24 26 22 21 64 39 13 5 49 29 1 45 56 27 38 65 48 68 57 17 41 44 58 55 40 30 11 35 28 18 14 36 62 70 59 23 3 7 10 50 19 51 71 60 43 47 63 54 4 52 32 46 16 8 61 67 69 31 42 33 37 9 25
random: unblocking device.
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
WARNING: WITNESS option enabled, expect reduced performance.
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache
arc4random: no preloaded entropy cache

fatal kernel trap:

   exception       = 0xe40 (hypervisor emulation assistance)
   HEIR = 0x0
   srr0            = 0xc000000003ebefe0 (0x1bcefe0)
   srr1            = 0x9000000000001032
   current msr     = 0x9000000000001032
   lr              = 0xc000000003ebefe0 (0x1bcefe0)
   curthread       = 0xc00000002a285580
          pid = 0, comm = zio_null_issue

timeout stopping cpus
[ thread pid 11 tid 100059 ]
Stopped at      .cpu_switch+0xf4:       tw      1, r0, r0
db> timeout stopping cpus
panic: hypervisor emulation assistance trap
cpuid = 33
time = 12
KDB: stack backtrace:
0xe0000000c910ed70: at .kdb_backtrace+0x68
0xe0000000c910ee90: at .vpanic+0x254
0xe0000000c910ef50: at .panic+0x34
0xe0000000c910efd0: at .sysarch+0x5cc
0xe0000000c910f060: at .trap+0x1108
0xe0000000c910f180: at .powerpc_interrupt+0x138
0xe0000000c910f220: kernel trap 0xe40 by proc0+0x158: srr1=0x9000000000001032
            r1=0xe0000000c910f4d0 cr=0x28000442 xer=0 ctr=0xc000000002fc512c r2=0xc000000003c6f000
0xe0000000c910f4d0: at proc0+0x154
0xe0000000c910f550: at .choosethread+0x14
0xe0000000c910f5d0: at .sched_throw+0x80
0xe0000000c910f660: at .thread_exit+0x2ec
0xe0000000c910f710: at .kthread_exit+0x164
0xe0000000c910f7b0: at .taskqueue_thread_loop+0x21c
0xe0000000c910f850: at .fork_exit+0xbc
0xe0000000c910f8f0: at .fork_trampoline+0x10
0xe0000000c910f920: at -0x4
Uptime: 12s
[  161.346127505,5] OPAL: Reboot request...