As posted in IRC, I am checking here if anyone has come across this
issue.  During boot on OpenBSD I get:

panic: trap type 4, code=0, pc=ffffffff811b7134

The operating system has halted.
Please press any key to reboot.

I don't get this with the same ISO on an Intel CPU.  Below is the
console from the OpenBSD boot, the dmesg from FreeBSD and the bhyve
command.  Any suggestions or tips greatly appreciated.




Copyright (c) 1982, 1986, 1989, 1991, 1993
        The Regents of the University of California.  All rights reserved.
Copyright (c) 1995-2015 OpenBSD. All rights reserved.  http://www.OpenBSD.org

OpenBSD 5.7-beta (RAMDISK_CD) #733: Tue Jan 20 15:39:52 MST 2015
real mem = 1056964608 (1008MB)
avail mem = 1027194880 (979MB)
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xf101f (9 entries)
bios0: vendor BHYVE version "1.00" date 03/14/2014
acpi0 at bios0: rev 2
acpi0: sleep states S5
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD Phenom(tm) II X4 955 Processor, 3214.13 MHz
cpu0: 64KB 64b/line 2-way I-cache, 64KB 64b/line 2-way D-cache, 512KB
64b/line 16-way L2 cache, 6MB 64b/line 48-way L3 cache
cpu0: ITLB 32 4KB entries fully associative, 16 4MB entries fully associative
cpu0: DTLB 48 4KB entries fully associative, 48 4MB entries fully associative
fatal protection fault in supervisor mode
trap type 4 code 0 rip ffffffff811b7134 cs 8 rflags 10286 cr2  0 cpl e
rsp ffffffff818058e0
panic: trap type 4, code=0, pc=ffffffff811b7134

The operating system has halted.
Please press any key to reboot.


Copyright (c) 1992-2015 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.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 10.1-STABLE #0 r278028: Sun Feb  1 18:05:27 UTC 2015
    r...@releng1.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
CPU: AMD Phenom(tm) II X4 955 Processor (3214.18-MHz K8-class CPU)
  Origin="AuthenticAMD"  Id=0x100f43  Family=0x10  Model=0x4  Stepping=3
  SVM: NP,NRIP,NAsids=64
  TSC: P-state invariant
real memory  = 17179869184 (16384 MB)
avail memory = 16063627264 (15319 MB)
Event timer "LAPIC" quality 400
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
ioapic0: Changing APIC ID to 8
ioapic0 <Version 2.1> irqs 0-23 on motherboard
random: <Software, Yarrow> initialized
kbd1 at kbdmux0
acpi0: <GBT GBTUACPI> on motherboard
acpi0: Power Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, cfbf0000 (3) failed
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
atrtc0: <AT realtime clock> port 0x70-0x73 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x4008-0x400b on acpi0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
vgapci0: <VGA-compatible display> port 0xee00-0xeeff mem
0xd0000000-0xdfffffff,0xfdfe0000-0xfdfeffff,0xfde00000-0xfdefffff irq
18 at device 5.0 on pci1
vgapci0: Boot video device
hdac0: <ATI (0x970f) HDA Controller> mem 0xfdffc000-0xfdffffff irq 19
at device 5.1 on pci1
pcib2: <ACPI PCI-PCI bridge> irq 18 at device 2.0 on pci0
pci2: <ACPI PCI bus> on pcib2
em0: <Intel(R) PRO/1000 Network Connection 7.4.2> port 0xdf00-0xdf1f
mem 0xfdde0000-0xfddfffff,0xfddc0000-0xfdddffff irq 18 at device 0.0
on pci2

bhyve command

bhyve -AI -H -P -W -s 0:0,amd_hostbridge -s 1:0,lpc -s
2:0,virtio-net,tap20 -s 2:1,virtio-net,tap22 -s 2:2,virtio-net,tap23
-s 3:0,virtio-blk,/bhyve/vm/vmhost/disk/disk01.img -s
4:0,ahci-cd,/iso/OpenBSD-install57beta.iso -l com1,/dev/nmdm1A -c 1 -m
1024M vmhost
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