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+.\"     $OpenBSD: cbus.4,v 1.1 2009/01/04 15:36:12 kettenis Exp $
+.\"
+.\" Copyright (c) 2009 Mark Kettenis <kettenis@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 4 2009 $
+.Dt CBUS 4 sparc64
+.Os
+.Sh NAME
+.Nm cbus
+.Nd channel device bus
+.Sh SYNOPSIS
+.Cd "cbus* at vbus?"
+.Sh DESCRIPTION
+The
+.Nm
+driver provides a virtual bus for channel devices provided by the
+UltraSPARC Hypervisor as found on sun4v logical domains.
+.Pp
+.Ox
+provides support for the following devices:
+.Pp
+.Bl -tag -width "vdisk(4)XX" -offset 3n -compact
+.\" .It Xr vdisk 4
+.\" virtual disk
+.It Xr vnet 4
+virtual network interface
+.El
+.Sh SEE ALSO
+.Xr intro 4 ,
+.Xr vbus 4
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Ox 4.5 .
+.Sh AUTHORS
+The
+.Nm
+driver was written by
+.An Mark Kettenis Aq kettenis@openbsd.org .