Hi,
I'm looking at what would be the best way for Wayland clients running in
a VM to communicate with a Wayland compositor in the host.
The base Wayland protocol is fairly self-contained, with little or no
references to objects outside the client and the server, so it lends
itself very well to virtualization.
But there's a problem when passing references to pixel buffers around
with FD passing, as SCM_RIGHTS isn't currently implemented in AF_VSOCK.
The Wayland project is willing to consider adding AF_VSOCK support to
the libwayland libraries alongside existing support for AF_UNIX, both on
client and server.
Any opinions on whether adding SCM_RIGHTS support to AF_VSOCK is a good
idea? Or other options for letting processes in the host to access shmem
buffers allocated within the guest?
Regarding the mechanics of mapping guest buffers in the host, I was
hoping the approach described below would work:
http://www.fp7-save.eu/papers/SCALCOM2016.pdf
Thanks,
Tomeu
