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Interrupt virtualization processing method and system oriented to ARM (Advanced RISC Machines) architecture virtualization field

An ARM architecture, virtual interrupt technology, applied in the direction of electrical digital data processing, software simulation/interpretation/simulation, program control design, etc., can solve problems such as inefficiency and complex processing flow

Active Publication Date: 2021-05-18
EAST CHINA INST OF COMPUTING TECH
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Problems solved by technology

The existing virtualization solution based on the microkernel design pattern includes Xen, but in order to reduce the complexity of the design, Xen transfers most of the hardware devices to the Linux root domain for control, and the processing of interrupt virtualization also requires VMM and the root domain This process is not only complicated but also inefficient

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  • Interrupt virtualization processing method and system oriented to ARM (Advanced RISC Machines) architecture virtualization field
  • Interrupt virtualization processing method and system oriented to ARM (Advanced RISC Machines) architecture virtualization field
  • Interrupt virtualization processing method and system oriented to ARM (Advanced RISC Machines) architecture virtualization field

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[0059] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0060] Embodiments of the present invention provide an interrupt virtualization processing method oriented to the field of ARM architecture virtualization, which is adapted to a GIC interrupt controller, and is not only applicable to interrupt virtualization of single-core systems, but also applicable to interrupt virtualization of multi-core systems. The GIC component is composed of two parts, namely the interrupt distributor and the CPU interface. The interrupt distributor mainly collects the interrupt...

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Abstract

The invention provides an interrupt virtualization processing method and system oriented to the field of ARM (Advanced RISC Machines) architecture virtualization, and relates to the technical field of ARM hardware architecture virtualization, the method comprises the following steps: a virtual interrupt acquisition step: sending an interrupt request of a virtual machine into a register in a corresponding virtual interrupt controller; and a virtual interrupt injection step: acquiring a virtual interrupt request by the virtual interrupt controller, and injecting the virtual interrupts into the corresponding vCPUs one by one according to the priority ranked by the VMM. The method can meet the real-time requirement of an embedded operating system, has good universality, and is suitable for an embedded multi-core system.

Description

technical field [0001] The present invention relates to the technical field of virtualization of ARM hardware architecture, in particular to an interrupt virtualization processing method and system oriented to the virtualization field of ARM architecture. Background technique [0002] The interrupt processing flow in the ARM hardware architecture is: the interrupt controller GIC collects the interrupt signal generated by the hard interrupt or directly gives the interrupt signal of the soft interrupt by the instruction, and then notifies the CPU; the CPU saves the running environment of the current program, and then calls the interrupt The service program handles the interrupt; the interrupt service program identifies the interrupt type by reading the relevant registers, and then executes the corresponding processing; after the interrupt request is executed, it will clear the interrupt by reading and writing the relevant interrupt control register; finally resume the execution...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/455
CPCG06F9/45558G06F2009/45575
Inventor 左龙王涵杨沧海夏卫
Owner EAST CHINA INST OF COMPUTING TECH
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