Bringing up FreeBSD in microvm without kernel debugging was fun and all, but I
think next steps will need some more introspection.

gdb for QEMU kernel debugging is well supported, but lldb is a new thing

https://adventurist.me/posts/00321

I might swing backaround and do native (connecting via serial) kernel debugging.
QEMU has the benefit of a 'whole system' view of the machine, but going for
serial kernel debugging lets me keep the path that is most available fresh in my
mind