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32 .Nd "run a guest operating system inside a virtual machine"
39 .Op Fl s Ar slot,emulation Ns Op , Ns Ar conf
40 .Op Fl l Ar lpcdev Ns Op , Ns Ar conf
44 is an experimental hypervisor that runs guest operating systems inside a
47 Parameters such as the number of virtual CPUs, amount of guest memory, and
48 I/O connectivity can be specified with command-line parameters.
50 The guest operating system must be loaded with
52 or a similar boot loader before running
56 runs until the guest operating system reboots or an unhandled hypervisor
61 The guest's local APIC is configured in xAPIC mode.
62 The xAPIC mode is the default setting so this option is redundant. It will be
63 deprecated in a future version.
70 Number of guest virtual CPUs.
71 The default is 1 and the maximum is 16.
73 Yield the virtual CPU thread when a HLT instruction is detected.
74 If this option is not specified, virtual CPUs will use 100% of a host CPU.
77 .Fx Ns /amd64 kernels compiled with
78 .Cd "option bvmdebug" ,
79 allow a remote kernel kgdb to be relayed to the guest kernel gdb stub
80 via a local IPv4 address and this port.
81 This option will be deprecated in a future version.
83 Force guest virtual CPUs to be pinned to host CPUs.
89 Force the guest virtual CPU to exit when a PAUSE instruction is detected.
91 Force virtio PCI device emulations to use MSI interrupts instead of MSI-X
93 .It Fl s Ar slot,emulation Ns Op , Ns Ar conf
94 Configure a virtual PCI slot and function.
97 provides PCI bus emulation and virtual devices that can be attached to
99 There are 32 available slots, with the option of providing up to 8 functions
103 .Ar pcislot Ns Op Ar :function
107 value is 0 to 31 and the optional function value is 0 to 7.
108 If not specified, the function value defaults to 0.
111 .It Li hostbridge | Li amd_hostbridge
113 Provide a simple host bridge.
114 This is usually configured at slot 0, and is required by most guest
118 emulation is identical but uses a PCI vendor ID of
121 PCI pass-through device.
123 Virtio network interface.
125 Virtio block storage interface.
127 AHCI controller attached to an ATAPI CD/DVD.
129 AHCI controller attached to a SATA hard-drive.
131 PCI 16550 serial device.
133 LPC PCI-ISA bridge with COM1 and COM2 16550 serial ports.
136 This optional parameter describes the backend for device emulations.
139 is not specified, the device emulation has no backend and can be
140 considered unconnected.
144 .It Ar tapN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
145 .It Ar vmnetN Ns Op , Ns Ar mac=xx:xx:xx:xx:xx:xx
149 is not specified, the MAC address is derived from a fixed OUI and the
150 remaining bytes from an MD5 hash of the slot and function numbers and
153 The MAC address is an ASCII string in
158 Block storage devices:
160 .It Pa /filename Ns Oo , Ns Li nocache Oc Ns Oo , Ns Li direct Oc Ns Oo , Ns Li ro Oc
161 .It Pa /dev/xxx Ns Oo , Ns Ar nocache Oc Ns Oo , Ns Ar direct Oc Ns Oo , Ns Ar ro Oc
170 Force the file to be opened read-only.
178 options are not available for virtio block devices.
184 Connect the serial port to the standard input and output of
187 Use the host TTY device for serial port I/O.
190 Pass-through devices:
192 .It Ns Ar slot Ns / Ns Ar bus Ns / Ns Ar function
193 Connect to a PCI device on the host at the selector described by
201 The host device must have been reserved at boot-time using the
203 loader variable as described in
206 .It Fl l Ar lpcdev Ns Op , Ns Ar conf
207 Allow devices behind the LPC PCI-ISA bridge to be configured.
208 The only supported devices are the TTY-class devices,
212 .It Fl m Ar size Ns Op Ar K|k|M|m|G|g|T|t
213 Guest physical memory size in bytes.
214 This must be the same size that was given to
217 The size argument may be suffixed with one of K, M, G or T (either upper
218 or lower case) to indicate a multiple of kilobytes, megabytes, gigabytes,
220 If no suffix is given, the value is assumed to be in megabytes.
224 to exit when a guest issues an access to an I/O port that is not emulated.
225 This is intended for debug purposes.
227 Ignore accesses to unimplemented Model Specific Registers (MSRs). This is intended for debug purposes.
229 The guest's local APIC is configured in x2APIC mode.
231 Print help message and exit.
233 Alphanumeric name of the guest.
234 This should be the same as that created by
238 The guest operating system must have been loaded with
240 or a similar boot loader before
244 To run a virtual machine with 1GB of memory, two virtual CPUs, a virtio
245 block device backed by the
247 filesystem image, and a serial port for the console:
248 .Bd -literal -offset indent
249 bhyve -c 2 -s 0,hostbridge -s 1,lpc -s 2,virtio-blk,/my/image \\
250 -l com1,stdio -A -H -P -m 1G vm1
253 Run a 24GB single-CPU virtual machine with three network ports, one of which
254 has a MAC address specified:
255 .Bd -literal -offset indent
256 bhyve -s 0,hostbridge -s 1,lpc -s 2:0,virtio-net,tap0 \\
257 -s 2:1,virtio-net,tap1 \\
258 -s 2:2,virtio-net,tap2,mac=00:be:fa:76:45:00 \\
259 -s 3,virtio-blk,/my/image -l com1,stdio \\
260 -A -H -P -m 24G bigvm
263 Run an 8GB quad-CPU virtual machine with 8 AHCI SATA disks, an AHCI ATAPI
264 CD-ROM, a single virtio network port, an AMD hostbridge, and the console
268 .Bd -literal -offset indent
270 -s 0,amd_hostbridge -s 1,lpc \\
271 -s 1:0,ahci-hd,/images/disk.1 \\
272 -s 1:1,ahci-hd,/images/disk.2 \\
273 -s 1:2,ahci-hd,/images/disk.3 \\
274 -s 1:3,ahci-hd,/images/disk.4 \\
275 -s 1:4,ahci-hd,/images/disk.5 \\
276 -s 1:5,ahci-hd,/images/disk.6 \\
277 -s 1:6,ahci-hd,/images/disk.7 \\
278 -s 1:7,ahci-hd,/images/disk.8 \\
279 -s 2,ahci-cd,/images.install.iso \\
280 -s 3,virtio-net,tap0 \\
281 -l com1,/dev/nmdm0A \\
296 .An Neel Natu Aq neel@freebsd.org
297 .An Peter Grehan Aq grehan@freebsd.org