Detection of duplicate memory pages across guest operating systems on a shared host
US8635413B2 · kind B2 · utility
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6References
17Claims
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Key dates
| Filing date | Apr 3, 2012 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/5016
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hypervisor receives a memory page checksum from a guest operating system, which corresponds to a page of memory utilized by the guest. Next, the hypervisor proceeds through a series of steps to detect that the memory page checksum matches a checksum value included in a checksum entry item, which includes an identifier of a different guest. In turn, the hypervisor shares the page of memory between the guest and the different guest in response to detecting that the memory page checksum matches the checksum value included the checksum entry item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.