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running in a Hyper-V virtual machine. The integration components add
driver support for virtual devices that Hyper-V can offer, such as the SCSI
controller (with support for hot add/removal of storage) or the synthetic
network adapter. Additional functionality can also be made possible with
the installation of integration components, such as Dynamic Memory for
supported guest operating systems.
The integration components are referred to as virtualization service
clients (VSCs), which Microsoft documentation also calls virtual service
clients and virtualization service consumers. VSCs in the virtual machines
(in kernel mode) cooperate with virtualization service providers (VSPs) in
kernel mode in the Management OS. This pairing is made possible by a
communications channel called the VMBus. There is one VMBus channel
for every virtual machine that is running. The VMBus is protected by
DEP. This means that if an attacker does successfully gain control of the