A method for realizing high-frequency data acquisition on an embedded virtual machine platform

Abstract

The invention discloses a method for realizing high-frequency data collection of an embedded virtual machine platform. The method comprises the following steps that an internal memory mapping mechanism and an interrupt trap mechanism provided by Hypervisor are utilized, and a virtual machine partition registers a calling interface of an interrupt preprocessing function and a corresponding interrupt internal memory mapping partition in a Hypervisor space, so the privileged operation in the high-frequency data collection and the interrupt fast response can be directly completed in the Hypervisor. The method provided by the invention is mainly used in high-real-time-performance and high-safety-requirement embedded systems such as aerospace and energy source control, safety mechanisms of temporal and spatial isolation and the like provided by using virtualization technology are utilized, and meanwhile, the problem of excessive expenditure for responding high-frequency interrupt in the traditional virtualization technology is solved, so the high-real-time-performance and high-safety-requirement embedded virtualization systems can be realized.

Description

technical field [0001] The invention belongs to the field of virtual machines, and in particular relates to a method for realizing high-frequency data acquisition of an embedded virtual machine platform. Background technique [0002] The Integrated Modular Avionics System (IMA) represented by the ARINC 653 specification has become the actual standard of the fourth-generation avionics system, and has been widely used in the fields of aerospace, energy and defense. With the development of virtualization technology, the virtual machine partition mechanism provided by Hypervisor is used to provide security, isolation, and reusability. It is widely used in high-performance computing and commercial server fields, and many virtualization methods are derived to implement ARINC 653 standard embedded real-time operating system, such as XtratuM, Integrity, PikeOS, etc. [0003] In the field of aerospace, especially in the control systems of aerospace vehicles such as rockets, missiles...

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Problems solved by technology

Therefore, once the high-frequency interrupt response partition is preempted by the high-priority partition, its data collection window will be missed, resulting in data loss

[0010] In embedded platforms, especially aerospace embedded platforms, a large number of embedded processors such as SPARC and ARM are used, which cannot provide APIC modules, and their hardware interrupt resources are relatively limited (for example, SPARC V8 has only 16 interrupt numbers), so it is impossible to provide Each sensor provides an independent interrupt number, so that the above method of interrupt direct mapping cannot be used to improve the interrupt response speed of the partition

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