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A method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU

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

Active Publication Date: 2020-09-22
KYLAND TECH CO LTD +1
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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

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  • A method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU
  • A method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU
  • A method and device for processing interrupts between heterogeneous operating systems on a multi-core CPU

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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...

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Abstract

The present 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. In the VMM initialization stage, the EPT of the guest operating system does not map the physical address of the I / O APIC. The EPT exception is triggered when the I / O APIC is initialized through the guest operating system, and the VMM exception handler is entered, and the RTE of the I / O APIC is modified through the write interface of the virtual APIC to realize the modification of the RTE, and then when the external device generates an interrupt, According to the modified RTE, the I / O APIC can directly deliver the interrupt message to the CPU of the corresponding guest operating system without managing the delivery through the VMM, which reduces the multiple VM-exit operations caused by each interrupt processing process. The interrupt processing delay is reduced, thereby improving the real-time performance of the real-time operating system and improving the access efficiency of the I / O device.

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

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/48G06F9/455
CPCG06F9/45558G06F9/4812G06F2009/45575G06F2009/45579
Inventor 彭元志
Owner KYLAND TECH CO LTD
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