NAME
virtio – VirtIO support driver
SYNOPSIS
virtio* at fdt? virtio* at pci? flags 0x00
DESCRIPTION
The virtio driver provides support service for paravirtualized devices using the VirtIO protocol. Such devices are provided by bhyve, KVM, QEMU, VirtualBox, and vmm(4).
Currently there are drivers for the following virtio devices:
- vio(4)
-
VirtIO network device
- vioblk(4)
-
VirtIO disk
- viocon(4)
-
VirtIO console device
- viogpu(4)
-
VirtIO GPU device
- viomb(4)
-
VirtIO memory ballooning driver
- viornd(4)
-
VirtIO random number device
- vioscsi(4)
-
VirtIO SCSI adapter
The virtio driver conforms to the virtio 0.9.5 specification. The virtio 1.0 standard is only supported for PCI devices.
By default 1.x is preferred over 0.9. This can be changed by setting the bit 0x8 in the flags.
SEE ALSO
HISTORY
The virtio driver first appeared in OpenBSD 5.3.
AUTHORS
The virtio driver was ported to OpenBSD and improved by Stefan Fritsch ⟨[email protected]⟩. It is based on the NetBSD driver by Minoura Makoto.
BUGS
virtio big-endian architectures are not yet supported.