Patent ID: 9286101
Filing Date: 2016-03-15
CPC Classification: G06F

Claim Text:
1. A method comprising: generating, by a processing device executing a guest operating system, a bitmap representing a status of a memory page designated by a hypervisor for use by the guest operating system, wherein the bitmap indicates the memory page is freed by the guest operating system; requesting, by the guest operating system, access to at least one byte of physical memory associated with the memory page prior to allocating the memory page, wherein the content of the memory page is swapped out to a secondary storage of the hypervisor; in response to requesting access, determining the hypervisor discards the content while avoiding retrieval of the content from the secondary storage; allocating, by the guest operating system, the memory page after the requesting access and in response to determining the content is discarded; and updating, by the guest operating system, the bitmap to indicate the memory page is used by the guest operating system.