A communication method and logic processor

Abstract

The embodiment of the invention discloses a communication method and a logic processor, which are used for reducing processor resource occupation of a sender and final transmission delay of an IPI. The communication method provided by the embodiment of the invention comprises the steps that after a first logic processor enters a virtualization mode, the first logic processor obtains inter-processor interrupt IPI information, and the IPI information comprises an identifier of a target virtual processor and virtual interrupt information; the first logic processor performs virtual processor address translation on the identifier of the target virtual processor to obtain a target logic processor where the target virtual processor currently runs; and the first logic processor sends the IPI information to the target logic processor.

Description

technical field [0001] The present application relates to the field of computer technology, in particular to a communication method and a logic processor. Background technique [0002] In a current processor (Central Processing Unit, CPU), a physical CPU module is externally presented as multiple instruction processing units, and each instruction processing unit can independently execute an instruction stream. These instruction processing components are generally called logical processors (Logical CPU). During the operation of a computer system, asynchronous communication is required between logical processors, for example, one logical processor needs to notify other logical processors to perform task switching. In another example, a logical processor needs to notify other logical processors to clear certain translation lookaside buffer (Translation Lookaside Buffer, TLB) entries. In another example, a logical processor needs to notify other logical processors to perform i...

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Problems solved by technology

[0006] In the prior art, computer system virtualization is realized by VMM software, and the VMM software adopts the same method as in the non-virtualization situation. A virtual processor sends an IPI to a target virtual processor based on a logical processor sending an IPI, and the IPI It is an operation that causes the logical processor to exit the virtualization mode. Therefore, it takes a certain amount of time for the logical processor as the sender to switch modes when it exits the virtualization mode, which will increase the processor resource usage of the sender and the final transmission of IPI. Delay

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