QEMU Share Directory with Host Without Networking

If Guest Support 9P and virtio.

Add this line to QEMU command

-virtfs local,path=/path/to/share,mount_tag=host0,security_model=passthrough,id=host0

and in guest os, edit /etc/fstab and add

host0   /wherever    9p      trans=virtio,version=9p2000.L   0 0

ref.
https://superuser.com/questions/628169/how-to-share-a-directory-with-the-host-without-networking-in-qemu