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VMM(4) Kernel Interfaces Manual VMM(4) NAME vmm.ko -- bhyve virtual machine monitor SYNOPSIS To load the driver as a module at boot, add this line to loader.conf(5): vmm_load="YES" The module can also be loaded manually with kldload(8): kldload vmm DESCRIPTION vmm.ko provides the kernel portion of the bhyve(4) hypervisor. An Intel CPU with VT-x/EPT or AMD CPU with SVM support is required. PCI device passthrough to a virtual machine requires hardware with VT-d support. PCI PASSTHROUGH When the hardware supports VT-d, and vmm.ko has been loaded at boot time, PCI devices can be reserved for use by the hypervisor. Entries consisting of the PCI bus/slot/function are added to the pptdevs loader.conf(5) variable. Additional entries are separated by spaces. Host PCI devices that match an entry will be assigned to the hypervisor and will not be probed by FreeBSD device drivers. See the "EXAMPLES" section below for sample usage. A large number of PCI device entries may require a string longer than the 128-character limit of loader.conf(5) variables. The pptdevs2 and pptdevs3 variables can be used for additional entries. LOADER TUNABLES Tunables can be set at the loader(8) prompt before booting the kernel or stored in loader.conf(5). hw.vmm.maxcpu Maximum number of virtual CPUs. The default is the number of physical CPUs in the system. EXAMPLES Reserve three PCI devices for use by the hypervisor: bus 10 slot 0 function 0, bus 6 slot 5 function 0, and bus 6 slot 5 function 1. pptdevs="10/0/0 6/5/0 6/5/1" SEE ALSO bhyve(4), loader.conf(5), bhyve(8), bhyveload(8), kldload(8) HISTORY vmm.ko first appeared in FreeBSD 10.0. AUTHORS Neel Natu <neel@freebsd.org> Peter Grehan <grehan@freebsd.org> FreeBSD 13.2 October 12, 2023 VMM(4)
NAME | SYNOPSIS | DESCRIPTION | PCI PASSTHROUGH | LOADER TUNABLES | EXAMPLES | SEE ALSO | HISTORY | AUTHORS
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