Hi, Not an OpenBSD developer, just another hobbyist tinkering with vmm (currently working on adding a gdb stub, like the one in qemu that I've found useful for osdev in the past)
VNC is one way to go about it. That would however involve adding an entire VNC server to vmd. To start off, exposing the framebuffer via a file in /dev would be another way to do it and would keep the implementation in vmd relatively simple. Somebody else would be better qualified to address the security implications of doing this. - Joe
