CPU (central processing unit) hot plug implementing method and device

Abstract

The embodiment of the invention provides a CPU hot plug implementing method and device. The method comprises that a Primary operating system example configures hot plug initialization codes for a Secondary operating system example; the Primary operating system example sends IPI (inter-processor interrupt) to a target CPU to trigger the target CPU to perform hot plug initialization, wherein the hot plug initialization is an initialization process during which the target CPU is hot-plugged; the Primary operating system example detects whether the target CPU completes the hot plug initialization; if so, the Primary operating system example sends IPI to the Secondary operating system to enable the Secondary operating system example to perform hot plugging of the target CPU, and accordingly, to achieve CPU Hot Plug in the Secondary operating system.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular, to a method and device for realizing hot swapping of a central processing unit. Background technique [0002] With the continuous development of computer technology, multiple cores (core) are deployed on a central processing unit (Central Processing Unit, CPU) to form a multi-core central processing unit with powerful processing capabilities, and a computer system including multiple multi-core processors is called A multiprocessor operating system. In a multi-processor operating system, the operating system instance started first is the primary operating system instance, and one or more operating system instances started subsequently are called the secondary operating system instance. When the secondary operating system instance needs to be run, it may be necessary to obtain the CPU from the primary operating system instance and start the CPU, which requires...

AI Technical Summary

Problems solved by technology

Therefore, the existing technology only realizes the Hot Plug of the CPU in the Primary operating system, and the Secondary operating system instance cannot automatically switch the CPU in the system resource pool from the real mode to the protected mode, and thus cannot start the target CPU during the running process. That is, the Hot Plug of the CPU cannot be implemented in the Secondary OS instance

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