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VIOCON(4) Device Drivers Manual VIOCON(4)

vioconVirtIO console device

viocon* at virtio?

The viocon driver provides support for the virtio(4) console interface provided by KVM, QEMU, and others.

It provides serial ports that are attached as ttys. Use as a kernel console for OpenBSD is not yet supported. The multiport feature is not yet supported.


intro(4), tty(4), virtio(4)

The viocon driver first appeared in OpenBSD 5.9.

The viocon driver was written by Stefan Fritsch <>.

June 21, 2017 OpenBSD-current