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32 .Nd "run a guest operating system inside a virtual machine"
38 .Op Fl l Ar lpcdev Ns Op , Ns Ar conf
39 .Op Fl m Ar size Ns Op Ar K|k|M|m|G|g|T|t
40 .Op Fl p Ar vcpu:hostcpu
41 .Op Fl s Ar slot,emulation Ns Op , Ns Ar conf
46 is a hypervisor that runs guest operating systems inside a
49 Parameters such as the number of virtual CPUs, amount of guest memory, and
50 I/O connectivity can be specified with command-line parameters.
52 The guest operating system must be loaded with
54 or a similar boot loader before running
58 runs until the guest operating system reboots or an unhandled hypervisor
63 The guest's local APIC is configured in xAPIC mode.
64 The xAPIC mode is the default setting so this option is redundant.
65 It will be deprecated in a future version.
72 Enable a low-level console device supported by
75 .Cd "device bvmconsole" .
76 This option will be deprecated in a future version.
78 Number of guest virtual CPUs.
79 The default is 1 and the maximum is 16.
81 Include guest memory in core file.
85 to exit when a guest issues an access to an I/O port that is not emulated.
86 This is intended for debug purposes.
91 .Cd "device bvmdebug" ,
92 allow a remote kernel kgdb to be relayed to the guest kernel gdb stub
93 via a local IPv4 address and this port.
94 This option will be deprecated in a future version.
96 Print help message and exit.
98 Yield the virtual CPU thread when a HLT instruction is detected.
99 If this option is not specified, virtual CPUs will use 100% of a host CPU.
100 .It Fl l Ar lpcdev Ns Op , Ns Ar conf
101 Allow devices behind the LPC PCI-ISA bridge to be configured.
102 The only supported devices are the TTY-class devices,
106 .It Fl m Ar size Ns Op Ar K|k|M|m|G|g|T|t
107 Guest physical memory size in bytes.
108 This must be the same size that was given to
111 The size argument may be suffixed with one of K, M, G or T (either upper
112 or lower case) to indicate a multiple of kilobytes, megabytes, gigabytes,
114 If no suffix is given, the value is assumed to be in megabytes.
115 .It Fl p Ar vcpu:hostcpu
116 Pin guest's virtual CPU
121 Force the guest virtual CPU to exit when a PAUSE instruction is detected.
122 .It Fl s Ar slot,emulation Ns Op , Ns Ar conf
123 Configure a virtual PCI slot and function.
126 provides PCI bus emulation and virtual devices that can be attached to
128 There are 32 available slots, with the option of providing up to 8 functions
132 .Ar pcislot[:function]
133 .Ar bus:pcislot:function
144 If not specified, the
147 If not specified, the
152 .It Li hostbridge | Li amd_hostbridge
154 Provide a simple host bridge.
155 This is usually configured at slot 0, and is required by most guest
159 emulation is identical but uses a PCI vendor ID of
162 PCI pass-through device.
164 Virtio network interface.
166 Virtio block storage interface.
168 Virtio RNG interface.
170 AHCI controller attached to an ATAPI CD/DVD.
172 AHCI controller attached to a SATA hard-drive.
174 PCI 16550 serial device.
176 LPC PCI-ISA bridge with COM1 and COM2 16550 serial ports. The LPC bridge
177 emulation can only be configured on bus 0.
180 This optional parameter describes the backend for device emulations.
183 is not specified, the device emulation has no backend and can be
184 considered unconnected.
188 .It Ar tapN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
189 .It Ar vmnetN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
193 is not specified, the MAC address is derived from a fixed OUI and the
194 remaining bytes from an MD5 hash of the slot and function numbers and
197 The MAC address is an ASCII string in
202 Block storage devices:
204 .It Pa /filename Ns Oo , Ns Ar block-device-options Oc
205 .It Pa /dev/xxx Ns Oo , Ns Ar block-device-options Oc
209 .Ar block-device-options
219 Force the file to be opened read-only.
220 .It Li sectorsize= Ns Ar logical Ns Oo / Ns Ar physical Oc
221 Specify the logical and physical sector sizes of the emulated disk.
222 The physical sector size is optional and is equal to the logical sector size
223 if not explicitly specified.
229 Connect the serial port to the standard input and output of
234 Use the host TTY device for serial port I/O.
237 Pass-through devices:
239 .It Ns Ar slot Ns / Ns Ar bus Ns / Ns Ar function
240 Connect to a PCI device on the host at the selector described by
248 The host device must have been reserved at boot-time using the
250 loader variable as described in
256 Set the universally unique identifier
258 in the guest's System Management BIOS System Information structure.
259 By default a UUID is generated from the host's hostname and
262 Ignore accesses to unimplemented Model Specific Registers (MSRs).
263 This is intended for debug purposes.
265 Force virtio PCI device emulations to use MSI interrupts instead of MSI-X
268 The guest's local APIC is configured in x2APIC mode.
270 Disable MPtable generation.
272 Alphanumeric name of the guest.
273 This should be the same as that created by
277 The guest operating system must have been loaded with
279 or a similar boot loader before
283 To run a virtual machine with 1GB of memory, two virtual CPUs, a virtio
284 block device backed by the
286 filesystem image, and a serial port for the console:
287 .Bd -literal -offset indent
288 bhyve -c 2 -s 0,hostbridge -s 1,lpc -s 2,virtio-blk,/my/image \\
289 -l com1,stdio -A -H -P -m 1G vm1
292 Run a 24GB single-CPU virtual machine with three network ports, one of which
293 has a MAC address specified:
294 .Bd -literal -offset indent
295 bhyve -s 0,hostbridge -s 1,lpc -s 2:0,virtio-net,tap0 \\
296 -s 2:1,virtio-net,tap1 \\
297 -s 2:2,virtio-net,tap2,mac=00:be:fa:76:45:00 \\
298 -s 3,virtio-blk,/my/image -l com1,stdio \\
299 -A -H -P -m 24G bigvm
302 Run an 8GB quad-CPU virtual machine with 8 AHCI SATA disks, an AHCI ATAPI
303 CD-ROM, a single virtio network port, an AMD hostbridge, and the console
307 .Bd -literal -offset indent
309 -s 0,amd_hostbridge -s 1,lpc \\
310 -s 1:0,ahci-hd,/images/disk.1 \\
311 -s 1:1,ahci-hd,/images/disk.2 \\
312 -s 1:2,ahci-hd,/images/disk.3 \\
313 -s 1:3,ahci-hd,/images/disk.4 \\
314 -s 1:4,ahci-hd,/images/disk.5 \\
315 -s 1:5,ahci-hd,/images/disk.6 \\
316 -s 1:6,ahci-hd,/images/disk.7 \\
317 -s 1:7,ahci-hd,/images/disk.8 \\
318 -s 2,ahci-cd,/images/install.iso \\
319 -s 3,virtio-net,tap0 \\
320 -l com1,/dev/nmdm0A \\
335 .An Neel Natu Aq neel@freebsd.org
336 .An Peter Grehan Aq grehan@freebsd.org