Power management commands from virtual machines (VMs) in a VM environment
may be trapped by a VM monitor. Depending on the current power states of
the other VMs in the VM environment, the VMM may emulate increase or
decrease in available resources as applied to the VM issuing the power
management commands. The VMM may modify the actual hardware resources
available in a platform when such modification may not affect the current
power states of the VMs in the VM environment.