Can the virtio things (serial, network, block, virtfs) be used on
arbitrary targets yet? I.E. Can I use a virtio network device on arm,
mips, powerpc, sparc... (And can the virtio serial console hook up to
qemu's stdin/stdout in -nographic mode yet?)
I asked this in 2010 and the answer at the time was "no". Still not
entirely sure why.