Method, device and system for realizing multi-core parallel at TEE side

Abstract

The invention provides a method and a device for realizing multi-core parallel at a TEE side, a computer system and the like. The method comprises the following steps: a TEE creates a plurality of sub-threads, wherein the sub-threads are used for realizing sub-functions of a TA deployed at a TEE side; for each sub-thread, the TEE triggers a rich execution environment (REE) to generate a shadow thread corresponding to the sub-thread, and the operation of the shadow thread promotes a core running the shadow thread to enter the TEE; and the TEE schedules the created sub-thread to the core where the corresponding shadow thread is located for execution. By utilizing the method, a plurality of service logics in the service with high performance requirements can be operated in parallel in the TEE, and the TEE triggers the REE to generate the thread and automatically enters the TEE side, so that active kernel adding at the TEE side is realized, and the parallel flexibility of the TEE side is improved.

Description

technical field [0001] The present application relates to operating system technology, and in particular to a method, device and system for realizing multi-core parallelism in a multi-domain operating system. Background technique [0002] In order to ensure the security of terminal equipment, ARM (advanced RISC machines) appeared The terminal device security framework represented by RISC (the full English name of RISC is reduced instructionset computer). exist Under the framework, system-level security is obtained by dividing the software and hardware resources of the system on chips (SoC) into two worlds. These two worlds are normal world (normal world) and secure world (secure world) (also called secure domain and non-secure domain). These two worlds correspond to rich execution environment (rich execution environment, REE) and trusted execution environment respectively. (trusted execution environment, TEE). REE and TEE run on the same physical device and run a set o...

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Problems solved by technology

However, on the one hand, the number of cores in the TEE is directly limited by the number of threads that call TAs on the REE side. In the case of insufficient cores, the TEE cannot actively create threads; on the other hand, multiple TAs in parallel in this scheme can only Implemented through a simple thread pool, without providing a unified scheduling and load balancing mechanism, the parallel operation of multiple TAs will affect the performance and power consumption of the entire system;

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