Spoofing CPUID for backwards compatibility
US11847476B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2021 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Sep 16, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/5055
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
To facilitate backwards compatibility, a computing device may respond to a call from an application for information regarding a processor on the computing device by returning information regarding a different processor than the processor on the computing device, including one or more of processor model, processor family, cache capabilities, translation lookaside buffer capabilities, processor serial number, processor brand, processor manufacturer, thread/core topology, cache topology, extended features, virtual address size, or physical address size that differs when the processor determines that the application is a legacy device application.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.