Cargo Features

virtio_bindings has no features set by default.

[dependencies]
virtio-bindings = { version = "0.2.2", features = ["virtio-v4_14_0", "virtio-v5_0_0"] }
virtio-v4_14_0

Kernel version features are deprecated and no longer have any effect,
as the kernel headers are backwards compatible.

virtio-v5_0_0