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→The Virtualization Stack and Other Root Partition Components
A DLL (named WinHv.sys) located in the parent partition Windows Server 2008 instance and any guest operating systems which are ''Hyper-V aware'' (in other words modified specifically to operate in a Hyper-V child partition). Allows the operating system's drivers to access the hypervisor using standard Windows API calls instead of hypercalls.
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'''VMBus'''
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Part of Hyper-V Integration Services, the VMBus facilitates highly optimized communication between child partitions and the parent partition.
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'''Virtualization Service Providers'''
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Resides in the parent partition and provides synthetic device support via the VMBus to Virtual Service Clients (VSCs) running in child partitions.
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'''Virtualization Service Clients'''
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Virtualization Service Clients are synthetic device instances that reside in child partitions. They communicate with the VSPs in the parent partition over the VMBus to fulfill the child partition's device access requests.
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In addition to the components contained within the virtualization stack, the root partition also contains the following components:
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<p>Component</p>
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<p>Description</p>
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