FreeBSD virtual environment management and repository

Attention! Current pages describe CBSD version 11.2.x. If you are using an older version, please update first.

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bhyve PCI Passthrough

Commands bhyve-ppt

			% cbsd bhyve-ppt


CBSD allows you to configure bhyve arguments to throw devices into the guest, if your hardware supports it

Attention! Read the information on the page FreeBSD Wiki: bhyve pci_passthru

In order to mark the device as passthrough, you must put the parameter in /boot/loader.conf as described in the wiki page, for example:


If you need to specify more than one device:

		pptdevs="2/0/0 1/2/6 4/9/0"

Please note that when using pptdevs, vmm the module must be initialized on /boot/loader.conf stage to pick up these records.

If you init/load vmm after kernel loading, for example via kldload, then pptdevs will not work.

Next, after booting up the system, make sure that CBSD sees the marked devices. With the command 'cbsd bhyve-ppt mode=list' you should see your devices:

% cbsd bhyve-ppt mode=list
5/1/0 :  DGE-528T Gigabit Ethernet Adapter :  D-Link System Inc : -
0/31/3 :  7 Series/C216 Chipset Family SMBus Controller :  Intel Corporation : -

Now, by using the ppt device ( 5/1/0 or 0/31/3 in this example) you can attach or detach this device to a specific virtual machine:

		cbsd bhyve-ppt mode=attach jname=vmname
		cbsd bhyve-ppt mode=detach jname=vmname