Patent · US Active

Directed interrupt virtualization with fallback

US11243791B2 · kind B2 · utility

7Cited by

25References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Christoph Raisch · Gerlingen, DE
Marco Kraemer · Sindelfingen, DE
Donald W. Schmidt · Stone Ridge, US
Bernd Nerz · Eppelheim, DE
Peter D. Driever · Poughkeepsie, US

Key dates

Filing date	Feb 13, 2020
Grant date	Feb 8, 2022
Priority date	—
Expiry date	Apr 14, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06F2213/2414
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An interrupt signal is provided to a guest operating system executed using one or more processors of a plurality of processors. One of the processors receives from a bus attachment device an interrupt signal issued by a bus connected module. A logical processor ID resulting from a translation of an interrupt target ID provided with the interrupt signal is used to address the receiving processor directly. The receiving processor checks whether interrupt target ID identifies the receiving processor as a target processor of the interrupt signal. If the receiving processor is not the target processor, the interrupt signal is forwarded for handling by the guest operating system using broadcasting.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.