Method and device for interrupt handling between heterogeneous operating systems on multi-core CPU

A technology of operating system and guest operating system, which is applied in the field of interrupt processing between heterogeneous operating systems on multi-core CPUs, and can solve the problems of prolonging the interrupt processing time and reducing the real-time performance of real-time operating systems

Active Publication Date: 2018-05-25
KYLAND TECH CO LTD +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU to solve the problem in the prior art that the interrupt processing delay is long and the real-time performance of the real-time operating system is reduced

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for interrupt handling between heterogeneous operating systems on multi-core CPU
  • Method and device for interrupt handling between heterogeneous operating systems on multi-core CPU
  • Method and device for interrupt handling between heterogeneous operating systems on multi-core CPU

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] In the embodiment of the present invention, it is mainly aimed at the interrupt processing of the heterogeneous operating system on the multi-core CPU based on virtualization technology. For the convenience of understanding, the following first introduces the multi-core CPU interrupt system. figure 2 Shown is a schematic diagram of the multi-core CPU interrupt architecture.

[0047] In the Symmetrical Multi-Processing (SMP) architecture...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of virtualization and cloud computing, in particular to a method and device for interrupt handling between heterogeneous operating systems on a multi-coreCPU. During a VMM initialization phase, a physical address of an I/O APIC is not mapped in an EPT of a guest operating system. When the I/O APIC is initialized by the guest operating system, an EPT exception is triggered, and a VMM exception handler is entered. Through a write interface of a virtual APIC, an RTE of the I/O APIC is modified, and the modification of the RTE is achieved. When an external device generates an interrupt, according to the modified RTE, the I/O APIC can directly deliver an interrupt message to a CPU of the corresponding guest operating system instead of managing and delivering via a VMM, which reduces multiple VM-exit operations that are caused by each interrupt processing process. The delay of interrupt processing is reduced, so that the real-time performance ofa real-time operating system can be improved, and the access efficiency of I/O devices is improved.

Description

technical field [0001] The invention relates to the technical field of virtualization and cloud computing, in particular to a method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU. Background technique [0002] At present, for the multi-core central processing unit (Central Processing Unit, CPU), usually multiple virtual machines are used to securely partition important work content, some virtualized partitions run real-time operating systems, and real-time applications run on them, and some virtual machines The non-real-time operating system runs in the partition, and the non-real-time application runs on it, and its architecture refers to figure 1 shown. Among them, interrupt delay is an important factor affecting the real-time performance of real-time operating systems. Therefore, in the industrial control virtualization heterogeneous operating system environment running real-time operating systems and non-real-time opera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/48G06F9/455
CPCG06F9/45558G06F9/4812G06F2009/45575G06F2009/45579
Inventor 彭元志
Owner KYLAND TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap