Systems and methods for efficient dynamic allocation of virtual machine resources are described herein. At least some illustrative embodiments include a method including executing virtual machine software on a real computer system (the virtual machine software including a hypervisor and a virtual machine including a plurality of virtual devices), associating each of the plurality of virtual devices with a unique subset of a real device within the real computer system, the hypervisor sending to virtual firmware within the virtual machine a request to eject that requires ejecting from the virtual machine one or more of the plurality of virtual devices, a virtual device resource object within the virtual firmware forwarding the request to eject to a virtual device resource driver executing on the virtual machine, and the virtual device resource driver causing individual ejections of each of the one or more virtual devices in response to the forwarded request.