Interrupt routing environment recovery method for Feiteng processor dormancy process

Abstract

The invention relates to an interrupt routing environment recovery method for the Feiteng processor dormancy process. The method comprises the steps that the saving sub-process of an interrupt routingenvironment is performed and particularly comprises the substeps of saving an ITS register environment and writing back ITS cache, and a dormancy mirror image is made; an operation system is startedagain; the recovery procedure after dormancy of the processor is started according to the dormancy mirror image, and a memory environment is recovered; the recovery sub-process of the interrupt routing environment is performed, and the interrupt routing environment is recovered; interrupt, equipment and processes are recovered, and then system recovery is completed. The method has the advantages that the implementation mode is ingenious, by means of organization design of a related register, a memory, cache processing and an interrupt route in an interrupt controller, consistent recovery of the interrupt routing environment of the dormancy process under a Feiteng processor platform is achieved, and the memory problem that after the system memory environment is recovered, the process address space is deleted is avoided.

Description

technical field [0001] The present application belongs to the technical field of processor interrupt processing, and in particular relates to an interrupt routing environment recovery method for the hibernation process of a Feiteng processor. Background technique [0002] The domestic Phytium series processors are based on the ARM64 architecture, especially the Phytium 1500A processor, which adopts the SOC architecture and integrates a general interrupt controller (GIC V3) and multiple PCIE controllers. It has been widely used in desktop PCs, Laptops and servers. [0003] The implementation of power management logic under the Phytium processor platform is complex, which is quite different from the implementation logic of power management on the x86 platform and the traditional ARM64 platform. At present, the power management technology of the Linux operating system is mainly aimed at the X86 platform or the ARM64 platform without the PCIE bus, while the Phytium processor pl...

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Problems solved by technology

But this invention does not take into account the particularity of interrupt processing and recovery under the Feiteng processor platform

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