Windows memory reduction at boot time by memory page reset to zero for virtual machine
US10761872B1 · kind B1 · utility
2Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2017 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Apr 22, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/152
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for zeroing guest memory of a VM during boot up, includes the guest OS attempts to set a page to zero. A page fault is generated and is handled by the hypervisor. The page is mapped by the hypervisor to a page in host memory, and is given to the guest. The guest OS attempts to set the next page to zero. Another page fault is generated the hypervisor unmaps the host memory page, and the second page is mapped to the same page. The hypervisor then gives the page to the guest, which contains all zeros. The process is repeated for remaining pages of the guest memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.