Bhyve and Rocky Linux startup error

Hi All,

I'm not a fan of byhve or virtualisation in general, and not a fan of 
Linux, but they've come together in my life and I'm trying to run Rocky 
(the successor to CentOS) under FreeBSD.

When I kick it off I get the following:
---------------
BdsDxe: starting Boot0001 "UEFI BHYVE SATA DVD ROM BHYVE-DE5C-3F46-0368" 
from PciRoot(0x0)/Pci(0x3,0x0)/Sata(0x0,0xFFFF,0x0)
!!!! X64 Exception Type - 06(#UD - Invalid Opcode)  CPU Apic ID - 0000000

< snip register dump>


FXSAVE_STATE - 000000003FF421D0
!!!! Find image based on IP(0x3D9E61F0) (No PDB) 
(ImageBase=000000003D9D3000, EntryPoint=000000003D9D4000) !!!!

---------------

It remains running and I have to kill it on another terminal.

This is on FreeBSD 14.2-RELEASE, amd64 generic kernel.

I configure the environment with:

kldload nmdm
kldload vmm
ifconfig tap0 create
sysctl net.link.tap.up_on_open=1
ifconfig bridge0 create
ifconfig bridge0 name bge0bridge
ifconfig bge0bridge addm bge0 tap0
ifconfig bge0bridge up

bhyve -c 1 -m 1G -w -H \
-s 0,hostbridge \
-s 3,ahci-cd,Rocky-10.0-x86_64-dvd1.iso \
-s 4,virtio-blk,/home/fjl/rockyvm.hdd \
-s 5,virtio-net,tap0 \
-s 29,fbuf,tcp=0.0.0.0:5900,w=800,h=600,wait \
-s 30,xhci,tablet \
-s 31,lpc -l com1,stdio \
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \
rockyvm

All the files exist (rockyvm.hdd  is 16G of nulls) although I note the 
uefi firmware is no longer maintained. I can connect to it using a VNC 
client and watch it crash.

Any ideas? May be simple, may be complicated. I just don't know with bhyve.

Thanks, Frank.