Method for creating virtual machine, a virtual machine monitor, and a virtual machine system
US9183157B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2011 |
| Grant date | Nov 10, 2015 |
| Priority date | — |
| Expiry date | Nov 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45583
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for creating virtual machine, a virtual machine monitor and a virtual machine system are provided in the embodiments of this application. The method comprises: mapping guest frame number (GFN) corresponding to a pseudo-physical memory of a virtual machine to a shared zero page, the shared zero page being a page having content of all zeros in physical memory; when the GFN is written by the virtual machine and if a page exception occurs, allocating a physical memory page to relieve the mapping relation between the guest frame number (GFN) and the shared zero page, and establishing a mapping relation between the guest frame number (GFN) and a machine frame number (MFN) of the physical memory page. The method can reduce the amount of memory used in virtual machine startup, improve virtual machine density, and support the concurrent startup of a memory overcommitted number of virtual machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.