Hybrid on-demand graphics translation table shadowing
US9619860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Apr 11, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/302
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In several embodiments, a graphics processor couples to a virtual machine monitor (VMM) to present a virtual graphics processor to one or more virtual machines. A mediator for the virtual graphics processor synchronously shadows modifications to a guest graphics translation table (GTT) of a virtual machine to a shadow GTT of the VMM using trap and emulate virtualization. If the mediator detects a frequency of modifications to the guest GTT that exceeds a threshold the mediator may then asynchronously shadow at least a portion of the guest GTT to the shadow GTT and rebuild the shadow GTT prior to submitting commands for the virtual graphics processor to the graphics processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.