Refreshing memory topology in virtual machine operating systems
US9336038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2013 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Dec 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/152
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to one aspect of the present disclosure, a method and technique for refreshing memory topology in virtual machine operating systems is disclosed. The method includes: responsive to receiving, by an operating system of a virtual machine, a notification of an affinity change relative to workload memory resources, polling a hypervisor for updated memory affinity data; determining, for each logical memory block of the workload memory resources, whether an affinity string for the respective logical memory block has changed; responsive to determining that the affinity string for the respective logical memory block has changed, identifying a data structure of the logical memory block maintained by the operating system; and updating affinity information in the data structure based on the change to the affinity string of the logical memory block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.