VIRTIO(4) | Device Drivers Manual | VIRTIO(4) |
virtio
— VirtIO
support driver
virtio* at fdt?
virtio* at pci? flags 0x00
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:
The virtio
driver conforms to the virtio
0.9.5 specification. The virtio 1.0 standard is only supported for PCI
devices.
By default 0.9 is preferred over 1.0. This can be changed by setting the bit 0x4 in the flags. Setting the bit 0x8 in the flags disables 1.0 support completely.
The virtio
driver first appeared in
OpenBSD 5.3.
The virtio
driver was ported to
OpenBSD and improved by Stefan
Fritsch
<sf@sfritsch.de>.
It is based on the NetBSD driver by
Minoura Makoto.
virtio
big-endian architectures are not
yet supported.
May 26, 2019 | OpenBSD-current |