Patent · US Active

Directed interrupt for multilevel virtualization with interrupt table

US11269794B2 · kind B2 · utility

6Cited by

26References

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	Mar 8, 2022
Priority date	—
Expiry date	Feb 13, 2040

Classification

Technology area (CPC G)Physics
CPC primaryG06F12/1081
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An interrupt signal is provided to a first 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 translates the received interrupt target ID to a logical processor ID of the target processor using an interrupt table entry stored in a memory section assigned to a second guest operating system hosting the first operating system and forwards the interrupt signal to the target processor for handling. The logical processor ID of the target processor is used to address the target processor directly.

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