[RFC] bhyve: modeling virtio-9p

Hi, Recently bhyve got virtio-9p support. Modeling it appears to be pretty straight-forward, but probably I'm missing something, so decided to discuss first before proceeding with the implementation. On the host side it looks like this: bhyve .... -s 25:0,virtio-9p,distfiles=/workspace/distfiles Mounting it in a (Linux) guest looks this way: mount -t 9p distfiles /mnt/distfiles lspci(8) shows it like this: 00:1f.0 SCSI storage controller: Red Hat, Inc. Virtio filesystem Subsystem: Red Hat, Inc. Virtio filesystem Flags: bus master, fast devsel, latency 64, IRQ 20 I/O ports at 2200 [size=512] Memory at c2004000 (32-bit, non-prefetchable) [size=8K] Expansion ROM at c0007000 [virtual] [disabled] [size=2K] Capabilities: [40] MSI-X: Enable+ Count=2 Masked- Capabilities: [4c] MSI: Enable- Count=1/1 Maskable- 64bit+ Kernel driver in use: virtio-pci I was thinking about presenting it like this: <filesystem type='mount'> <driver type='virtiofs'/> <source dir='/workspace/distfiles'> <target dir='distfiles'/> </filesystem> There's also an optional <readonly/> element for readonly mounts, which is also supported by bhyve. Does this look reasonable? Roman Bogorodskiy