NAME
virtio —
Para-virtualized I/O in a virtual
machine
SYNOPSIS
virtio* at fdt?
virtio* at pci? dev ? function ?
ld* at virtio?
vioif* at virtio?
viomb* at virtio?
viornd* at virtio?
vioscsi* at virtio?
DESCRIPTION
virtio defines an interface for efficient, standard and
extensible I/O between the hypervisor and the virtual machine. The
virtio device driver represents an emulated device
that the hypervisor makes available to the virtual machine.
virtio driver itself provides the core
infrastructure to communicate with the hypervisor (called virtqueues) and
supports the following devices:
- ld(4)
- A Disk device.
- vioif(4)
- An Ethernet device.
- viomb(4)
- A pseudo-device to release memory back to the hypervisor.
- viornd(4)
- An entropy source.
- vioscsi(4)
- A SCSI adapter.
SEE ALSO
ld(4), pci(4), vioif(4), viomb(4), viornd(4), vioscsi(4)
Rusty Russell, IBM Corporation, Virtio PCI Card Specification, http://ozlabs.org/~rusty/virtio-spec/.
HISTORY
The virtio driver first appeared in
NetBSD 6.0.