Pure OCaml implementations of Mirage consoles, for Unix and Xen
The Unix version of the console currently uses standard output. The code is in
unix/console.{ml,mli}
The Xen kernel version of the console uses the primary PV console ring. The code is in
xen/console.{ml,mli}
There is also a Unix userspace utility which creates and services Xen consoles ("console backends"):
Connect a console to a VM like this:
[root@st30 ~]# ./mirage-console connect trusty
Operating on VM domain id: 19
Creating device 1 (linux device /dev/tty1)
{ ref = 128; event_channel = 13 }
Then inside the guest:
[root@trusty ~]# cat > /dev/hvc1
hello
there
And observe in dom0:
hello
there
Then hit Control+C and it all cleans up.