This isn't a perfect approach, but I've had pretty decent results with QEMU's virtfs for passing data into a QEMU VM (assuming your guest kernel is compiled wit

This isn't a perfect approach, but I've had pretty decent results with QEMU's virtfs for passing data into a QEMU VM (assuming your guest kernel is compiled with support for it). QEMU's -virtfs option maps a folder on your host to a virtual filesystem. Inside your guest, you can mount the filesystem (assuming your kernel has CONFIG_NET_9P and CONFIG_NET_9P_VIRTIO enabled) and use it however you want.