Microsoft Hyper-V client drivers

modulename: hv_vmbus.ko

configname: CONFIG_HYPERV

Linux Kernel Configuration
└─>Device Drivers
└─>Microsoft Hyper-V guest support
└─>Microsoft Hyper-V client drivers
In linux kernel since version 2.6.32 (release Date: 2009-12-02)  
Select this option to run Linux as a Hyper-V client operating
system.

source code:
drivers/hv/