Patent ID: 11875174
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method comprising:
installing, while a first virtual machine is running based on a first virtualization emulator of an earlier version virtualization emulator, a second virtualization emulator of a later version virtualization emulator;
starting a second virtual machine using the second virtualization emulator, wherein the second virtual machine comprises the same configuration information as the first virtual machine;
sending, from the first virtual machine to the second virtual machine, target resource information of a virtual device of the first virtual machine;
obtaining a first instruction of creating a first virtual device for the second virtual machine;
searching, in response to the first instruction, the target resource information for first resource information of the first virtual device;
setting the first resource information as resource information of the first virtual device;
suspending the first virtual machine after starting the second virtual machine;
suspending the second virtual machine;
sending device status information of the first virtual machine to the second virtual machine; and
controlling the second virtual machine to resume running based on the device status information.