bhyve on 14-CURRENT crashes trying to boot Windows 10 20H2 DVD

[Rebecca Cran]

I've been testing some UEFI firmware changes, but even with the 0.2 
(2014.SP1) port version, I can't boot from the Windows 10 20H2 DVD 
without causing bhyve to crash. The console output is:

Press any key to boot from CD or DVD...
rdmsr to register 0x3a on vcpu 0
vm exit[0]
reason          VMX
rip             0x0000000001e1ccdf
inst_length     3
status          0
exit_reason      2 (Triple fault)
qualification   0x0000000000000000
inst_type               0
inst_error              0
Abort trap
BHYVE exited with code 134


The command line I'm using is:

bhyve -AH -s 0:0,hostbridge -s 31:0,lpc -c 1 -m 8G -l 
bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd -l com1,stdio -s 
3:0,ahci-hd,bhyve-windows-10-20h2.img -s 
29,fbuf,tcp=0.0.0.0:5900,w=1024,h=768,wait -s 
7,ahci-cd,en_windows_10_business_editions_version_20h2_updated_jan_2021_x64_dvd_533a330d.iso 
guest

-- 
Rebecca Cran