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

9 files changed, 639 insertions, 0 deletions

diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index d5ba005..9b7d534 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -168,6 +168,12 @@ MAN=	aac.4 \
 	${_hptmv.4} \
 	${_hptnr.4} \
 	${_hptrr.4} \
+	hv_ata_pci_disengage.4 \
+	hv_kvp.4 \
+	hv_netvsc.4 \
+	hv_storvsc.4 \
+	hv_utils.4 \
+	hv_vmbus.4 \
 	hwpmc.4 \
 	ichsmb.4 \
 	${_ichwd.4} \
diff --git a/share/man/man4/hv_ata_pci_disengage.4 b/share/man/man4/hv_ata_pci_disengage.4
new file mode 100644
index 0000000..b8699f7
--- /dev/null
+++ b/share/man/man4/hv_ata_pci_disengage.4
@@ -0,0 +1,90 @@
+.\" $FreeBSD$
+.\"
+.\" 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_ata_pci_disengage
+.Nd Hyper-V ATA PCI Disengage 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
+driver prevents the native
+.Fx
+ATA driver from
+loading in the presence of Hyper-V.
+.Fx
+guests running on Hyper-V can take advantage of the Hyper-V Storage
+Virtual Consumer
+.Pq Xr hv_storvsc 4
+for using their IDE devices.
+Since the ATA
+driver serves IDE devices as well, there is a chance that the ATA driver may
+interfere with the operations of
+.Xr hv_storvsc 4 .
+The
+.Nm
+driver avoids
+conflicts between the ATA driver and
+.Xr hv_storvsc 4
+by disabling the ATA driver
+when the
+.Fx
+guest is booting.
+.Pp
+A side effect of disabling the ATA driver is that CDROM may become
+inoperational on
+.Fx
+guest partitions.
+If CDROM access is a must then users may use
+"set hw.ata.disk_enable=1" at boot time to prevent the ATA driver from being
+disabled.
+.Sh SEE ALSO
+.Xr hv_vmbus 4 ,
+.Xr hv_utils 4 ,
+.Xr hv_netvsc 4 ,
+.Xr hv_storvsc 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 .
diff --git a/share/man/man4/hv_kvp.4 b/share/man/man4/hv_kvp.4
new file mode 100644
index 0000000..afd3e32
--- /dev/null
+++ b/share/man/man4/hv_kvp.4
@@ -0,0 +1,96 @@
+.\" $FreeBSD$
+.\"
+.\" 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_kvp
+.Nd Hyper-V Key Value Pair 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
+driver provides the ability to store, retrieve, modify and delete
+key value pairs for
+.Fx
+guest partitions running on Hyper-V.
+Hyper-V allows administrators to store custom metadata in the form
+of key value pairs inside the
+.Fx
+guest partition.
+Administrators can use Windows Powershell scripts to add, read,
+modify and delete such key value pairs.
+.Pp
+The driver is bare bones and merely forwards requests to its counterpart
+user mode daemon,
+.Xr hv_kvp_daemon 8 .
+The daemon maintains pools of key value
+pairs and does the actual metadata management.
+.Pp
+The same driver and daemon combination are also used to set and get
+IP addresses from a
+.Fx
+guest.
+.Pp
+The set functionality is particularly
+useful when the
+.Fx
+guest is assigned a static IP address and is failed over from one
+Hyper-V host to another.
+After failover, Hyper-V uses the set IP functionality to automatically
+update the
+.Fx
+guest's IP address to its original static value.
+.Pp
+On the other hand, the get IP functionality is used to update the guest IP
+address in the Hyper-V management console window.
+.Sh SEE ALSO
+.Xr hv_vmbus 4 ,
+.Xr hv_utils 4 ,
+.Xr hv_netvsc 4 ,
+.Xr hv_storvsc 4 ,
+.Xr hv_ata_pci_disengage 4 ,
+.Xr hv_kvp_daemon 8
+.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 .
diff --git a/share/man/man4/hv_netvsc.4 b/share/man/man4/hv_netvsc.4
new file mode 100644
index 0000000..ed04e9d
--- /dev/null
+++ b/share/man/man4/hv_netvsc.4
@@ -0,0 +1,83 @@
+.\" $FreeBSD$
+.\"
+.\" 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_netvsc
+.Nd Hyper-V Network Virtual Service Consumer
+.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
+driver implements the virtual network device for
+.Fx
+guest
+partitions running on Hyper-V.
+.Fx
+guest partitions running on Hyper-V do not have direct access to
+network devices attached to the Hyper-V server.
+Although a
+.Fx
+guest can access network devices using Hyper-V's
+full emulation mode, the performance in this mode tends to be unsatisfactory.
+.Pp
+To counter the above issues, the
+.Nm
+driver implements a network
+Virtual
+Service Consumer (VSC) that relays network requests from the guest partition
+to the network Virtual Service Provider (VSP) hosted in the root partition
+using the high performance data exchange infrastructure provided by
+.Xr hv_vmbus 4
+driver.
+The VSP in the root partition then forwards the network related requests to
+the physical network card.
+.Sh SEE ALSO
+.Xr hv_vmbus 4 ,
+.Xr hv_utils 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 .
diff --git a/share/man/man4/hv_storvsc.4 b/share/man/man4/hv_storvsc.4
new file mode 100644
index 0000000..57b6127
--- /dev/null
+++ b/share/man/man4/hv_storvsc.4
@@ -0,0 +1,89 @@
+.\" $FreeBSD$
+.\"
+.\" 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_storvsc
+.Nd Hyper-V Storage Virtual Service Consumer
+.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
+driver implements the virtual store device for
+.Fx
+guest
+partitions running on Hyper-V.
+.Fx
+guest partitions running on Hyper-V do not have direct access to
+storage devices attached to the Hyper-V server.
+Although a
+.Fx
+guest can access storage devices using Hyper-V's
+full emulation mode, the performance in this mode tends to be unsatisfactory.
+.Pp
+To counter the above issues, the
+.Nm
+driver implements a storage
+Virtual
+Service Consumer (VSC) that relays storage requests from the guest partition
+to the storage Virtual Service Provider (VSP) hosted in the root partition
+using the high performance data exchange infrastructure provided by
+.Xr hv_vmbus 4
+driver.
+The VSP in the root partition then forwards the storage related requests to
+the physical storage device.
+.Pp
+This driver functions by presenting a SCSI HBA interface to the Comman Access
+Method (CAM) layer.
+CAM control blocks (CCBs) are
+converted into VSCSI protocol messages which are delivered to the root
+partition VSP over the Hyper-V VMBus.
+.Sh SEE ALSO
+.Xr hv_vmbus 4 ,
+.Xr hv_utils 4 ,
+.Xr hv_netvsc 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 .
diff --git a/share/man/man4/hv_utils.4 b/share/man/man4/hv_utils.4
new file mode 100644
index 0000000..844e599
--- /dev/null
+++ b/share/man/man4/hv_utils.4
@@ -0,0 +1,85 @@
+.\" $FreeBSD$
+.\"
+.\" 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_utils
+.Nd Hyper-V Utilities 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
+driver provides time keeping, shutdown and heartbeat
+functionality for
+.Fx
+guest partitions running on Hyper-V.
+Hyper-V is a hypervisor-based virtualization technology from Microsoft.
+The
+.Nm
+driver is one of the core drivers required to be present in guest
+partitions running on Hyper-V.
+This driver provides the following
+functionalities to guest partitions:
+.Pp
+(a) Time Keeping: The clock inside the guest partition will remain accurate by
+synchronizing to the clock on the virtualization server via Timesync service,
+and with the help of the pluggable time source device.
+.Pp
+(b) Integrated shutdown: Guest partitions running
+.Fx
+can be shut down from
+Hyper-V Manager console by using the
+.Qq Shut down
+command.
+.Pp
+(c) Heartbeat: This feature allows the virtualization server to detect whether
+the guest partition is running and responsive.
+.Sh SEE ALSO
+.Xr hv_vmbus 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 .
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 .
diff --git a/share/man/man8/Makefile b/share/man/man8/Makefile
index f3de79d..aa1258e 100644
--- a/share/man/man8/Makefile
+++ b/share/man/man8/Makefile
@@ -3,6 +3,7 @@
 
 MAN=	crash.8 \
 	diskless.8 \
+	hv_kvp_daemon.8 \
 	intro.8 \
 	nanobsd.8 \
 	picobsd.8 \
diff --git a/share/man/man8/hv_kvp_daemon.8 b/share/man/man8/hv_kvp_daemon.8
new file mode 100644
index 0000000..a717153
--- /dev/null
+++ b/share/man/man8/hv_kvp_daemon.8
@@ -0,0 +1,96 @@
+.\" $FreeBSD$
+.\"
+.\" 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_kvp_daemon
+.Nd Hyper-V Key Value Pair Daemon
+.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
+daemon provides the ability to store, retrieve, modify and delete
+Key Value pairs for
+.Fx
+guest partitions running on Hyper-V.
+Hyper-V allows administrators to store custom metadata in the form
+of Key Value pairs inside the
+.Fx
+guest partition.
+Administrators can use Windows Powershell scripts to add, read, modify
+and delete such Key Value pairs.
+.Pp
+The
+.Nm
+accepts Key Value pair management requests from the
+.Xr hv_kvp 4
+driver and performs the actual metadata management on the file-system.
+.Pp
+The same daemon and driver combination is also used to set and get
+IP addresses from a
+.Fx
+guest.
+.Pp
+The set functionality is particularly
+useful when the
+.Fx
+guest is assigned a static IP address and is failed
+over from one Hyper-V host to another.
+After failover, Hyper-V uses the set IP functionality to automatically
+update the
+.Fx
+guest's IP address to its original static value.
+.Pp
+On the other hand, the get IP functionality is used to update the guest IP
+address in the Hyper-V management console window.
+.Sh SEE ALSO
+.Xr hv_vmbus 4 ,
+.Xr hv_utils 4 ,
+.Xr hv_netvsc 4 ,
+.Xr hv_storvsc 4 ,
+.Xr hv_ata_pci_disengage 4 ,
+.Xr hv_kvp 4
+.Sh HISTORY
+Support for
+.Nm
+first appeared in
+.Fx 10.0 .
+The daemon 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 .