.\"	$OpenBSD: vmmci.4,v 1.2 2017/01/13 16:02:27 jmc Exp $
.\"
.\" Copyright (c) 2017 Reyk Floeter <reyk@openbsd.org>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: January 13 2017 $
.Dt VMMCI 4
.Os
.Sh NAME
.Nm vmmci
.Nd VMM control interface
.Sh SYNOPSIS
.Cd "vmmci* at virtio?"
.Sh DESCRIPTION
The
.Nm
driver provides a control interface for virtual machines running inside
.Ox
.Xr vmm 4
(virtual machine monitor)
hosts.
.Pp
The driver handles shutdown and reboot requests from the
.Xr vmm 4
host by signalling
.Xr init 8
with
.Dv SIGUSR2
and
.Dv SIGINT
respectively.
.Sh SEE ALSO
.Xr pvbus 4 ,
.Xr vmm 4 ,
.Xr init 8 ,
.Xr vmd 8
.Sh HISTORY
The
.Nm
driver first appeared in
.Ox 6.1 .
.Sh AUTHORS
The
.Nm
driver was written by
.An Reyk Floeter Aq Mt reyk@openbsd.org .