Page swapping in virtual machine environment
US9996370B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2013 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Jan 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/657
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Disclosed are examples of memory allocation and reallocation for virtual machines operating in a shared memory configuration creating a swap file for at least one virtual machine. One example method may include allocating guest physical memory to the swap file to permit the at least one virtual machine to access host physical memory previously occupied by the guest physical memory. The example method may also include determining whether an amount of available host physical memory is below a minimum acceptable level threshold, and if so then freeing at least one page of host physical memory and intercepting a memory access attempt performed by the at least one virtual machine and allocating host physical memory to the virtual machine responsive to the memory access attempt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.