Virtual machine migration acceleration with page state indicators
US10521256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2016 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Jun 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45583
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, systems, and computer program products are included for migrating a virtual machine. An example method of migrating a virtual machine includes transmitting, from a hypervisor, a migration indicator to a guest. The hypervisor receives a free memory page indicator from the guest that identifies one or one or more free memory pages corresponding to a virtual machine. The hypervisor then places the virtual machine in a suspended state. While the virtual machine is in the suspended state, the hypervisor modifies a dirty status and a migration status corresponding to one or more dirty memory pages. After resuming operation of the virtual machine from the suspended state, the hypervisor modifies a migration status corresponding to the one or more free memory pages to exclude the one or more free memory pages from a migration. The hypervisor migrates the one or more dirty memory pages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.