modules.md

Driver Module List

Core Controller (HyperVController)

Core Hyper-V controller module.

Boot argument	Description
-hvctrldbg	Enables debug printing in DEBUG builds

CPU Disabler (HyperVCPU)

Disables additional CPUs under macOS 10.4.

Boot argument	Description
-hvcpudbg	Enables debug printing in DEBUG builds

File Copy (HyperVFileCopy)

Provides host to guest file copy support (Guest Services). Requires the hvfilecopyd userspace daemon to be running.

Boot argument	Description
-hvfcopydbg	Enables debug printing in DEBUG builds
-hvfcopymsgdbg	Enables debug printing of message data in DEBUG builds
-hvfcopyoff	Disables this module

Graphics Bridge (HyperVGraphicsBridge)

Provides basic graphics support for macOS.

Boot argument	Description
-hvgfxbdbg	Enables debug printing in DEBUG builds
-hvgfxbmsgdbg	Enables debug printing of message data in DEBUG builds
-hvgfxboff	Disables this module

Heartbeat (HyperVHeartbeat)

Provides heartbeat reporting to Hyper-V.

Boot argument	Description
-hvheartdbg	Enables debug printing in DEBUG builds
-hvheartmsgdbg	Enables debug printing of message data in DEBUG builds
-hvheartoff	Disables this module

Keyboard (HyperVKeyboard)

Provides keyboard support.

Boot argument	Description
-hvkbddbg	Enables debug printing in DEBUG builds
-hvkbdmsgdbg	Enables debug printing of message data in DEBUG builds
-hvkbdoff	Disables this module

Mouse (HyperVMouse)

Provides mouse support.

Boot argument	Description
-hvmousdbg	Enables debug printing in DEBUG builds
-hvmousmsgdbg	Enables debug printing of message data in DEBUG builds
-hvmousoff	Disables this module

Network (HyperVNetwork)

Provides networking support.

Boot argument	Description
-hvnetdbg	Enables debug printing in DEBUG builds
-hvnetmsgdbg	Enables debug printing of message data in DEBUG builds
-hvnetoff	Disables this module

PCI Bridge (HyperVPCIBridge)

Provides PCI passthrough support.

Boot argument	Description
-hvpcibdbg	Enables debug printing in DEBUG builds
-hvpcibmsgdbg	Enables debug printing of message data in DEBUG builds
-hvpciboff	Disables this module

PCI Module Device (HyperVModuleDevice)

Provides MMIO allocation/deallocation functions for PCI passthrough.

Boot argument	Description
-hvpcimdbg	Enables debug printing in DEBUG builds

PCI Provider (HyperVPCIProvider)

Provides IOACPIPlatformDevice nub on generation 2 VMS for fake PCI root bridge (HyperVPCIRoot).

Boot argument	Description
-hvpcipdbg	Enables debug printing in DEBUG builds

PCI Root Bridge (HyperVPCIRoot)

Provides a fake PCI root bridge for proper macOS functionality on generation 2 VMs, and provides support for PCI passthrough.

Boot argument	Description
-hvpcirdbg	Enables debug printing in DEBUG builds

Shutdown (HyperVShutdown)

Provides software shutdown through Virtual Machine Connection and PowerShell. Requires the hvshutdownd userspace daemon to be running.

Boot argument	Description
-hvshutdbg	Enables debug printing in DEBUG builds
-hvshutmsgdbg	Enables debug printing of message data in DEBUG builds
-hvshutoff	Disables this module

Storage (HyperVStorage)

Provides SCSI storage support.

Boot argument	Description
-hvstordbg	Enables debug printing in DEBUG builds
-hvstormsgdbg	Enables debug printing of message data in DEBUG builds
-hvstoroff	Disables this module

Time Synchronization (HyperVTimeSync)

Provides host to guest time synchronization support. Requires the hvtimesyncd userspace daemon to be running.

Boot argument	Description
-hvtimedbg	Enables debug printing in DEBUG builds
-hvtimemsgdbg	Enables debug printing of message data in DEBUG builds
-hvtimeoff	Disables this module

VMBus Controller (HyperVVMBus)

Provides root of VMBus devices and services.

Boot argument	Description
-hvvmbusdbg	Enables debug printing in DEBUG builds

VMBus Device Nub (HyperVVMBusDevice)

Provides connection nub for child VMBus device modules.

Boot argument	Description
-hvvmbusdebdbg	Enables debug printing in DEBUG builds