f9c005a17f
Example of configuration: ctl.conf: portal-group pg0 { discovery-auth-group no-authentication listen 0.0.0.0 listen [::] } target iqn.2012-06.com.example:target0 { auth-group no-authentication portal-group pg0 port ioctl/5/3 lun 0 { path /z/test.img size 8G } lun 1 { path /z/test1.img size 8G } } bhyve <...> -s 4,virtio-scsi,/dev/cam/ctl5.3,iid=3 <VM_NAME> From inside guest: root@:~ # zpool status test pool: test state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM test ONLINE 0 0 0 da0 ONLINE 0 0 0 da1 ONLINE 0 0 0 dmesg: da0 at vtscsi0 bus 0 scbus0 target 0 lun 0 da0: <FREEBSD CTLDISK 0001> Fixed Direct Access SPC-5 SCSI device da0: Serial Number MYSERIAL0000 da0: 300.000MB/s transfers da0: Command Queueing enabled da0: 8192MB (16777216 512 byte sectors) da1 at vtscsi0 bus 0 scbus0 target 0 lun 1 da1: <FREEBSD CTLDISK 0001> Fixed Direct Access SPC-5 SCSI device da1: Serial Number MYSERIAL0001 da1: 300.000MB/s transfers da1: Command Queueing enabled da1: 8192MB (16777216 512 byte sectors) Discussed with: grehan Reviewed by: mav Obtained from: TrueOS Relnotes: Yes Sponsored by: iXsystems Inc. Tested with: FreeBSD HEAD, Fedora 28 (Workstation) and Ubuntu 18.04. Differential Revision: https://reviews.freebsd.org/D15276
574 lines
15 KiB
Groff
574 lines
15 KiB
Groff
.\" Copyright (c) 2013 Peter Grehan
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd Jun 11, 2018
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.Dt BHYVE 8
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.Os
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.Sh NAME
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.Nm bhyve
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.Nd "run a guest operating system inside a virtual machine"
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.Sh SYNOPSIS
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.Nm
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.Op Fl abehuwxACHPSWY
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.Oo
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.Fl c\~ Ns
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.Oo
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.Op Ar cpus= Ns
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.Ar numcpus Ns
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.Oc Ns
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.Op Ar ,sockets=n Ns
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.Op Ar ,cores=n Ns
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.Op Ar ,threads=n
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.Oc
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.Op Fl g Ar gdbport
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.Op Fl l Ar lpcdev Ns Op , Ns Ar conf
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.Op Fl m Ar memsize Ns Op Ar K|k|M|m|G|g|T|t
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.Op Fl p Ar vcpu:hostcpu
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.Op Fl s Ar slot,emulation Ns Op , Ns Ar conf
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.Op Fl G Ar port
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.Op Fl U Ar uuid
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.Ar vmname
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.Sh DESCRIPTION
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.Nm
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is a hypervisor that runs guest operating systems inside a
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virtual machine.
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.Pp
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Parameters such as the number of virtual CPUs, amount of guest memory, and
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I/O connectivity can be specified with command-line parameters.
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.Pp
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If not using a boot ROM, the guest operating system must be loaded with
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.Xr bhyveload 8
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or a similar boot loader before running
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.Nm ,
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otherwise, it is enough to run
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.Nm
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with a boot ROM of choice.
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.Pp
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.Nm
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runs until the guest operating system reboots or an unhandled hypervisor
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exit is detected.
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.Sh OPTIONS
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.Bl -tag -width 10n
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.It Fl a
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The guest's local APIC is configured in xAPIC mode.
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The xAPIC mode is the default setting so this option is redundant.
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It will be deprecated in a future version.
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.It Fl A
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Generate ACPI tables.
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Required for
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.Fx Ns /amd64
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guests.
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.It Fl b
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Enable a low-level console device supported by
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.Fx
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kernels compiled with
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.Cd "device bvmconsole" .
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This option will be deprecated in a future version.
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.It Fl c Op Ar setting ...
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Number of guest virtual CPUs
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and/or the CPU topology.
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The default value for each of
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.Ar numcpus ,
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.Ar sockets ,
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.Ar cores ,
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and
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.Ar threads
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is 1.
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The current maximum number of guest virtual CPUs is 16.
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If
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.Ar numcpus
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is not specified then it will be calculated from the other arguments.
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The topology must be consistent in that the
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.Ar numcpus
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must equal the product of
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.Ar sockets ,
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.Ar cores ,
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and
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.Ar threads .
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If a
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.Ar setting
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is specified more than once the last one has precedence.
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.It Fl C
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Include guest memory in core file.
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.It Fl e
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Force
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.Nm
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to exit when a guest issues an access to an I/O port that is not emulated.
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This is intended for debug purposes.
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.It Fl g Ar gdbport
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For
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.Fx
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kernels compiled with
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.Cd "device bvmdebug" ,
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allow a remote kernel kgdb to be relayed to the guest kernel gdb stub
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via a local IPv4 address and this port.
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This option will be deprecated in a future version.
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.It Fl G Ar port
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Start a debug server that uses the GDB protocol to export guest state to a
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debugger.
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An IPv4 TCP socket will be bound to the supplied
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.Ar port
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to listen for debugger connections.
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Only a single debugger may be attached to the debug server at a time.
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If
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.Ar port
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begins with
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.Sq w ,
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.Nm
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will pause execution at the first instruction waiting for a debugger to attach.
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.It Fl h
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Print help message and exit.
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.It Fl H
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Yield the virtual CPU thread when a HLT instruction is detected.
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If this option is not specified, virtual CPUs will use 100% of a host CPU.
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.It Fl l Ar lpcdev Ns Op , Ns Ar conf
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Allow devices behind the LPC PCI-ISA bridge to be configured.
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The only supported devices are the TTY-class devices
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.Ar com1
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and
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.Ar com2
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and the boot ROM device
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.Ar bootrom .
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.It Fl m Ar memsize Ns Op Ar K|k|M|m|G|g|T|t
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Guest physical memory size in bytes.
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This must be the same size that was given to
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.Xr bhyveload 8 .
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.Pp
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The size argument may be suffixed with one of K, M, G or T (either upper
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or lower case) to indicate a multiple of kilobytes, megabytes, gigabytes,
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or terabytes.
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If no suffix is given, the value is assumed to be in megabytes.
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.Pp
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.Ar memsize
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defaults to 256M.
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.It Fl p Ar vcpu:hostcpu
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Pin guest's virtual CPU
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.Em vcpu
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to
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.Em hostcpu .
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.It Fl P
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Force the guest virtual CPU to exit when a PAUSE instruction is detected.
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.It Fl s Ar slot,emulation Ns Op , Ns Ar conf
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Configure a virtual PCI slot and function.
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.Pp
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.Nm
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provides PCI bus emulation and virtual devices that can be attached to
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slots on the bus.
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There are 32 available slots, with the option of providing up to 8 functions
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per slot.
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.Bl -tag -width 10n
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.It Ar slot
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.Ar pcislot[:function]
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.Ar bus:pcislot:function
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.Pp
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The
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.Ar pcislot
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value is 0 to 31.
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The optional
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.Ar function
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value is 0 to 7.
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The optional
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.Ar bus
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value is 0 to 255.
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If not specified, the
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.Ar function
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value defaults to 0.
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If not specified, the
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.Ar bus
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value defaults to 0.
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.It Ar emulation
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.Bl -tag -width 10n
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.It Li hostbridge | Li amd_hostbridge
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.Pp
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Provide a simple host bridge.
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This is usually configured at slot 0, and is required by most guest
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operating systems.
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The
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.Li amd_hostbridge
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emulation is identical but uses a PCI vendor ID of
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.Li AMD .
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.It Li passthru
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PCI pass-through device.
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.It Li virtio-net
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Virtio network interface.
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.It Li virtio-blk
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Virtio block storage interface.
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.It Li virtio-scsi
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Virtio SCSI interface.
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.It Li virtio-rnd
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Virtio RNG interface.
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.It Li virtio-console
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Virtio console interface, which exposes multiple ports
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to the guest in the form of simple char devices for simple IO
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between the guest and host userspaces.
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.It Li ahci
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AHCI controller attached to arbitrary devices.
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.It Li ahci-cd
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AHCI controller attached to an ATAPI CD/DVD.
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.It Li ahci-hd
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AHCI controller attached to a SATA hard-drive.
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.It Li e1000
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Intel e82545 network interface.
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.It Li uart
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PCI 16550 serial device.
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.It Li lpc
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LPC PCI-ISA bridge with COM1 and COM2 16550 serial ports and a boot ROM.
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The LPC bridge emulation can only be configured on bus 0.
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.It Li fbuf
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Raw framebuffer device attached to VNC server.
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.It Li xhci
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eXtensible Host Controller Interface (xHCI) USB controller.
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.El
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.It Op Ar conf
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This optional parameter describes the backend for device emulations.
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If
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.Ar conf
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is not specified, the device emulation has no backend and can be
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considered unconnected.
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.Pp
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Network devices:
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.Bl -tag -width 10n
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.It Ar tapN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
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.It Ar vmnetN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
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.Pp
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If
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.Ar mac
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is not specified, the MAC address is derived from a fixed OUI and the
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remaining bytes from an MD5 hash of the slot and function numbers and
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the device name.
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.Pp
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The MAC address is an ASCII string in
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.Xr ethers 5
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format.
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.El
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.Pp
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Block storage devices:
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.Bl -tag -width 10n
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.It Pa /filename Ns Oo , Ns Ar block-device-options Oc
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.It Pa /dev/xxx Ns Oo , Ns Ar block-device-options Oc
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.El
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.Pp
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The
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.Ar block-device-options
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are:
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.Bl -tag -width 8n
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.It Li nocache
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Open the file with
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.Dv O_DIRECT .
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.It Li direct
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Open the file using
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.Dv O_SYNC .
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.It Li ro
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Force the file to be opened read-only.
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.It Li sectorsize= Ns Ar logical Ns Oo / Ns Ar physical Oc
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Specify the logical and physical sector sizes of the emulated disk.
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The physical sector size is optional and is equal to the logical sector size
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if not explicitly specified.
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.El
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.Pp
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SCSI devices:
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.Bl -tag -width 10n
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.It Pa /dev/cam/ Ns Oo , Ns Ar port and initiator_id Oc
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.El
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.Pp
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TTY devices:
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.Bl -tag -width 10n
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.It Li stdio
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Connect the serial port to the standard input and output of
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the
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.Nm
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process.
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.It Pa /dev/xxx
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Use the host TTY device for serial port I/O.
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.El
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.Pp
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Boot ROM device:
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.Bl -tag -width 10n
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.It Pa romfile
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Map
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.Ar romfile
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in the guest address space reserved for boot firmware.
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.El
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.Pp
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Pass-through devices:
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.Bl -tag -width 10n
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.It Ns Ar slot Ns / Ns Ar bus Ns / Ns Ar function
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Connect to a PCI device on the host at the selector described by
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.Ar slot ,
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.Ar bus ,
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and
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.Ar function
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numbers.
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.El
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.Pp
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Guest memory must be wired using the
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.Fl S
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option when a pass-through device is configured.
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.Pp
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The host device must have been reserved at boot-time using the
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.Va pptdev
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loader variable as described in
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.Xr vmm 4 .
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.Pp
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Virtio console devices:
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.Bl -tag -width 10n
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.It Li port1= Ns Pa /path/to/port1.sock Ns ,anotherport= Ns Pa ...
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A maximum of 16 ports per device can be created.
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Every port is named and corresponds to a Unix domain socket created by
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.Nm .
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.Nm
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accepts at most one connection per port at a time.
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.Pp
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Limitations:
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.Bl -bullet -offset 2n
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.It
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Due to lack of destructors in
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.Nm ,
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sockets on the filesystem must be cleaned up manually after
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.Nm
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exits.
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.It
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There is no way to use the "console port" feature, nor the console port
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resize at present.
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.It
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Emergency write is advertised, but no-op at present.
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.El
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.El
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.Pp
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Framebuffer devices:
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.Bl -tag -width 10n
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.It Oo rfb= Ns Oo Ar IP: Oc Ns Ar port Oc Ns Oo ,w= Ns Ar width Oc Ns Oo ,h= Ns Ar height Oc Ns Oo ,vga= Ns Ar vgaconf Oc Ns Oo Ns ,wait Oc Ns Oo ,password= Ns Ar password Oc
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.Bl -tag -width 8n
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.It Ar IP:port
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An
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.Ar IP
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address and a
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.Ar port
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VNC should listen on.
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The default is to listen on localhost IPv4 address and default VNC port 5900.
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Listening on an IPv6 address is not supported.
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.It Ar width No and Ar height
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A display resolution, width and height, respectively.
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If not specified, a default resolution of 1024x768 pixels will be used.
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Minimal supported resolution is 640x480 pixels,
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and maximum is 1920x1200 pixels.
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.It Ar vgaconf
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Possible values for this option are
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.Dq io
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(default),
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.Dq on
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, and
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.Dq off .
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PCI graphics cards have a dual personality in that they are
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standard PCI devices with BAR addressing, but may also
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implicitly decode legacy VGA I/O space
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.Pq Ad 0x3c0-3df
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and memory space
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.Pq 64KB at Ad 0xA0000 .
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The default
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.Dq io
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option should be used for guests that attempt to issue BIOS
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calls which result in I/O port queries, and fail to boot if I/O decode is disabled.
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.Pp
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The
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.Dq on
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option should be used along with the CSM BIOS capability in UEFI
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to boot traditional BIOS guests that require the legacy VGA I/O and
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memory regions to be available.
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.Pp
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The
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.Dq off
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option should be used for the UEFI guests that assume that
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VGA adapter is present if they detect the I/O ports.
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An example of such a guest is
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.Ox
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in UEFI mode.
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.Pp
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Please refer to the
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.Nm
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.Fx
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wiki page
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.Pq Lk https://wiki.freebsd.org/bhyve
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for configuration notes of particular guests.
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.It wait
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Instruct
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.Nm
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to only boot upon the initiation of a VNC connection, simplifying the installation
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of operating systems that require immediate keyboard input.
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This can be removed for post-installation use.
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.It password
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This type of authentication is known to be cryptographically weak and is not
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intended for use on untrusted networks.
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Many implementations will want to use stronger security, such as running
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the session over an encrypted channel provided by IPsec or SSH.
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.El
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.El
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.Pp
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xHCI USB devices:
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.Bl -tag -width 10n
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.It Li tablet
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|
A USB tablet device which provides precise cursor synchronization
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when using VNC.
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.El
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.El
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.It Fl S
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Wire guest memory.
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.It Fl u
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RTC keeps UTC time.
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.It Fl U Ar uuid
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Set the universally unique identifier
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.Pq UUID
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in the guest's System Management BIOS System Information structure.
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By default a UUID is generated from the host's hostname and
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.Ar vmname .
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.It Fl w
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Ignore accesses to unimplemented Model Specific Registers (MSRs).
|
|
This is intended for debug purposes.
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.It Fl W
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Force virtio PCI device emulations to use MSI interrupts instead of MSI-X
|
|
interrupts.
|
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.It Fl x
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|
The guest's local APIC is configured in x2APIC mode.
|
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.It Fl Y
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Disable MPtable generation.
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.It Ar vmname
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Alphanumeric name of the guest.
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This should be the same as that created by
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.Xr bhyveload 8 .
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.El
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.Sh DEBUG SERVER
|
|
The current debug server provides limited support for debuggers.
|
|
.Ss Registers
|
|
Each virtual CPU is exposed to the debugger as a thread.
|
|
.Pp
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|
General purpose registers can be queried for each virtual CPU, but other
|
|
registers such as floating-point and system registers cannot be queried.
|
|
.Ss Memory
|
|
Memory (including memory mapped I/O regions) can be read by the debugger,
|
|
but not written. Memory operations use virtual addresses that are resolved
|
|
to physical addresses via the current virtual CPU's active address translation.
|
|
.Ss Control
|
|
The running guest can be interrupted by the debugger at any time
|
|
.Pq for example, by pressing Ctrl-C in the debugger .
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|
.Pp
|
|
Single stepping is only supported on Intel CPUs supporting the MTRAP VM exit.
|
|
.Pp
|
|
Breakpoints are not supported.
|
|
.Sh SIGNAL HANDLING
|
|
.Nm
|
|
deals with the following signals:
|
|
.Pp
|
|
.Bl -tag -width indent -compact
|
|
.It SIGTERM
|
|
Trigger ACPI poweroff for a VM
|
|
.El
|
|
.Sh EXIT STATUS
|
|
Exit status indicates how the VM was terminated:
|
|
.Pp
|
|
.Bl -tag -width indent -compact
|
|
.It 0
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rebooted
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|
.It 1
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|
powered off
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.It 2
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|
halted
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.It 3
|
|
triple fault
|
|
.El
|
|
.Sh EXAMPLES
|
|
If not using a boot ROM, the guest operating system must have been loaded with
|
|
.Xr bhyveload 8
|
|
or a similar boot loader before
|
|
.Xr bhyve 4
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|
can be run.
|
|
Otherwise, the boot loader is not needed.
|
|
.Pp
|
|
To run a virtual machine with 1GB of memory, two virtual CPUs, a virtio
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|
block device backed by the
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|
.Pa /my/image
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|
filesystem image, and a serial port for the console:
|
|
.Bd -literal -offset indent
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|
bhyve -c 2 -s 0,hostbridge -s 1,lpc -s 2,virtio-blk,/my/image \\
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|
-l com1,stdio -A -H -P -m 1G vm1
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|
.Ed
|
|
.Pp
|
|
Run a 24GB single-CPU virtual machine with three network ports, one of which
|
|
has a MAC address specified:
|
|
.Bd -literal -offset indent
|
|
bhyve -s 0,hostbridge -s 1,lpc -s 2:0,virtio-net,tap0 \\
|
|
-s 2:1,virtio-net,tap1 \\
|
|
-s 2:2,virtio-net,tap2,mac=00:be:fa:76:45:00 \\
|
|
-s 3,virtio-blk,/my/image -l com1,stdio \\
|
|
-A -H -P -m 24G bigvm
|
|
.Ed
|
|
.Pp
|
|
Run an 8GB quad-CPU virtual machine with 8 AHCI SATA disks, an AHCI ATAPI
|
|
CD-ROM, a single virtio network port, an AMD hostbridge, and the console
|
|
port connected to an
|
|
.Xr nmdm 4
|
|
null-modem device.
|
|
.Bd -literal -offset indent
|
|
bhyve -c 4 \\
|
|
-s 0,amd_hostbridge -s 1,lpc \\
|
|
-s 1:0,ahci,hd:/images/disk.1,hd:/images/disk.2,\\
|
|
hd:/images/disk.3,hd:/images/disk.4,\\
|
|
hd:/images/disk.5,hd:/images/disk.6,\\
|
|
hd:/images/disk.7,hd:/images/disk.8,\\
|
|
cd:/images/install.iso \\
|
|
-s 3,virtio-net,tap0 \\
|
|
-l com1,/dev/nmdm0A \\
|
|
-A -H -P -m 8G
|
|
.Ed
|
|
.Pp
|
|
Run a UEFI virtual machine with a display resolution of 800 by 600 pixels
|
|
that can be accessed via VNC at: 0.0.0.0:5900.
|
|
.Bd -literal -offset indent
|
|
bhyve -c 2 -m 4G -w -H \\
|
|
-s 0,hostbridge \\
|
|
-s 3,ahci-cd,/path/to/uefi-OS-install.iso \\
|
|
-s 4,ahci-hd,disk.img \\
|
|
-s 5,virtio-net,tap0 \\
|
|
-s 29,fbuf,tcp=0.0.0.0:5900,w=800,h=600,wait \\
|
|
-s 30,xhci,tablet \\
|
|
-s 31,lpc -l com1,stdio \\
|
|
-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd \\
|
|
uefivm
|
|
.Ed
|
|
.Sh SEE ALSO
|
|
.Xr bhyve 4 ,
|
|
.Xr nmdm 4 ,
|
|
.Xr vmm 4 ,
|
|
.Xr ethers 5 ,
|
|
.Xr bhyvectl 8 ,
|
|
.Xr bhyveload 8
|
|
.Sh HISTORY
|
|
.Nm
|
|
first appeared in
|
|
.Fx 10.0 .
|
|
.Sh AUTHORS
|
|
.An Neel Natu Aq Mt neel@freebsd.org
|
|
.An Peter Grehan Aq Mt grehan@freebsd.org
|