Abstract: Embodiments of the present disclosure disclose a communication method, apparatus and system for a virtual machine and a host machine. An embodiment of the communication method for a virtual machine and a host machine includes: polling a first command completion identifier queue set in a shared memory; comparing, in response to detecting an update of the first command completion identifier queue, the first command completion identifier queue with a second command completion identifier queue stored in the virtual machine to determine an identifier of a currently completed command; and updating the second command completion identifier queue based on the identifier of the currently completed command.

Abstract: Embodiments of the disclosure disclose a method and apparatus for migrating a virtual machine. A specific embodiment of the method comprises: loading a target kernel module of a target operating system, the target operating system used for controlling a target electronic device running a virtual machine, and the target kernel module used for performing a shutdown operation for the target electronic device; determining whether to perform the shutdown operation based on electronic device running state information of the target electronic device; determining whether to migrate the virtual machine when a preset triggering condition is met, in response to determining not to perform the shutdown operation; and migrating the virtual machine if determining to migrate the virtual machine.