From 9fe35c7245f21b37300ade221685cbd2b5a4019b Mon Sep 17 00:00:00 2001
From: gjb <gjb@FreeBSD.org>
Date: Wed, 19 Mar 2014 01:43:03 +0000
Subject: MFC r263105, r263106:

r263105:
  Add hyperv manual pages provided by Microsoft, formatted
  for FreeBSD standards.  Very little, if any, content was
  modified.

r263106:
  Connect the hyperv driver manuals to the build.

Sponsored by:	The FreeBSD Foundation
---
 share/man/man4/hv_vmbus.4 | 93 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 share/man/man4/hv_vmbus.4

(limited to 'share/man/man4/hv_vmbus.4')

diff --git a/share/man/man4/hv_vmbus.4 b/share/man/man4/hv_vmbus.4
new file mode 100644
index 0000000..873cb28e
--- /dev/null
+++ b/share/man/man4/hv_vmbus.4
@@ -0,0 +1,93 @@
+.\" $FreeBSD$
+.\"
+.\" Copyright (c) 2012 Microsoft Corp.
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.Dd September 10, 2013
+.Dt HYPER-V 4
+.Os
+.Sh NAME
+.Nm hv_vmbus
+.Nd Hyper-V Virtual Machine Bus (VMBus) Driver
+.Sh SYNOPSIS
+To compile this driver into the kernel, place the following lines in
+the system kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device hyperv"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+provides a high performance communication interface between
+guest and root partitions in Hyper-V.
+Hyper-V is a hypervisor-based virtualization technology from Microsoft.
+Hyper-V supports isolation in terms of a partition.
+A partition is a
+logical unit of isolation, supported by the hypervisor, in which
+operating systems execute.
+.Pp
+The Microsoft hypervisor must have at least one parent, or root,
+partition, running Windows Server operating system.
+The virtualization stack runs in the parent partition and has
+direct access to the hardware devices.
+The root partition then creates the child partitions which host
+the guest operating systems.
+.Pp
+Child partitions do not have direct access to other hardware resources
+and are presented
+a virtual view of the resources, as virtual devices (VDevs).
+Requests to the virtual devices are
+redirected either via the VMBus or the hypervisor to the devices in
+the parent partition, which handles the requests.
+.Pp
+The VMBus is a logical inter-partition communication channel.
+The parent partition hosts Virtualization Service Providers (VSPs)
+which communicate over the VMBus to handle device access requests from
+child partitions.
+Child partitions host Virtualization Service
+Consumers (VSCs) which redirect device requests to VSPs in the parent
+partition via the VMBus.
+The Hyper-V VMBus driver defines and implements
+the interface that facilitate high performance bi-directional communication
+between the VSCs and VSPs.
+All VSCs utilize the VMBus driver.
+.Sh SEE ALSO
+.Xr hv_utils 4 ,
+.Xr hv_netvsc 4 ,
+.Xr hv_storvsc 4 ,
+.Xr hv_ata_pci_disengage 4
+.Sh HISTORY
+Support for
+.Nm
+first appeared in
+.Fx 10.0 .
+The driver was developed through a joint effort between Citrix Incorporated,
+Microsoft Corporation, and Network Appliance Incorporated.
+.Sh AUTHORS
+.An -nosplit
+.Fx
+support for
+.Nm
+was first added by
+.An Microsoft BSD Integration Services Team Aq bsdic@microsoft.com .
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