1. A machine-implemented method comprising: receiving a memory page checksum from a guest, wherein the memory page checksum corresponds to a page of memory utilized by the guest; detecting that the memory page checksum matches a checksum value included in a checksum entry item, wherein the checksum entry item includes an identifier of a different guest; and in response to detecting that the memory page checksum matches the checksum value included the checksum entry item, sharing the page of memory between the guest and the different guest.