Patent · US Active

Interrupt signaling for directed interrupt virtualization

US10922111B2 · kind B2 · utility

12Cited by

9References

20Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

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

Key dates

Filing date	Feb 13, 2020
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Feb 13, 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. A bus attachment device receives an interrupt signal from a bus connected module with an interrupt target ID identifying a processor assigned for use by the guest operating system as a target processor for handling the interrupt signal. The bus attachment device forwards the interrupt signal to the target processor for handling. A translation of the interrupt target ID to a logical processor ID of the target processor is used to address the target processor directly. In addition, the bus attachment device updates a directed interrupt signal indicator of a directed interrupt signal vector assigned to the target processor in order to indicate that there is an interrupt signal addressed to the respective interrupt target ID to be handled.

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