Patent ID: 9483360
Filing Date: 2016-11-01
CPC Classification: G06F

Claim Text:
1. A method comprising: suspending, by a hypervisor executed by a processing device, execution of a virtual machine; initiating, by the hypervisor, after the suspending, a backup procedure to save a current state of the virtual machine; reading, by the hypervisor, a value of a flag that is written to by the virtual machine and is stored in a portion of a memory accessible by the virtual machine and the hypervisor; responsive to determining that the value of the flag read by the hypervisor equals a first value, resuming, by the hypervisor, execution of the virtual machine prior to receiving a backup status message regarding the backup procedure; and responsive to determining that the value of the flag read by the hypervisor equals a second value, waiting, by the hypervisor, to resume execution of the virtual machine until receiving a backup status message indicating that the backup procedure was successful.