# Virtio always gets selected by whoever wants it. config VIRTIO tristate # Similarly the virtio ring implementation. config VIRTIO_RING tristate depends on VIRTIO config VIRTIO_PCI tristate "PCI driver for virtio devices (EXPERIMENTAL)" depends on PCI && EXPERIMENTAL select VIRTIO select VIRTIO_RING ---help--- This drivers provides support for virtio based paravirtual device drivers over PCI. This requires that your VMM has appropriate PCI virtio backends. Most QEMU based VMMs should support these devices (like KVM or Xen). Currently, the ABI is not considered stable so there is no guarantee that this version of the driver will work with your VMM. If unsure, say M. config VIRTIO_BALLOON tristate "Virtio balloon driver (EXPERIMENTAL)" select VIRTIO select VIRTIO_RING ---help--- This driver supports increasing and decreasing the amount of memory within a KVM guest. If unsure, say M.