Timing setting method and device for timer, and virtualization equipment

Abstract

The embodiment of the invention provides a timing setting method and device for a timer, and virtualization equipment. The method is applied to the virtualization equipment. A plurality of processorsare deployed in the virtualization equipment, a first component is operated, a second component is constructed through virtualization on the first component, and each processor comprises a proxy processor independent of the second component. The method comprises the following steps that: the second component notifies the first component of the timing time of the timer; and the first component calls the proxy processor to set the timer according to the timing time. Therefore, the system can use the hardware of the proxy processor to generate the interrupt of the timer, so that a situation thatthe second component exits since interrupt is in the presence in the processor to which the second component belongs is avoided, and a situation that a virtual machine exits since the timer set by thevirtual machine interrupts can be avoided so as to reduce virtual machine exiting frequencies and reduce the setting time consumption of the timer.

Description

technical field [0001] The present application relates to the technical field of virtualization, in particular to a timer timing setting method, a timer timing setting device and a virtualization device. Background technique [0002] In cloud computing IaaS (Infrastructure as a Service, infrastructure as a service), cloud operators provide hosted physical machines, virtual machines and other facilities for different users to use according to their actual needs. [0003] Virtual Machine (Virtual Machine) service is one of the core services of IaaS. It refers to a system virtual machine, that is, a complete computer system that can be simulated, has complete hardware system functions, and runs in a completely isolated environment. [0004] The virtual machine cannot fully control all hardware resources. When accessing some hardware resources, it needs to exit to a non-virtualized state, and the host agent completes some resource access. [0005] If the program of the virtual ...

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Problems solved by technology

[0008] In the process of setting the timer, if there is a timing error, etc., this setting may be canceled, which will cause the virtual machine to exit. After the cancellation, the timer must be reset, which will also cause the virtual machine to exit.

At the same time, an interrupt is issued after the timer expires, which will also cause the virtual machine to exit

[0009] Moreover, aperiodic clocks are commonly used at present. After each clock interrupt arrives, the timer needs to be reset. Frequent setting of the timer will easily cause the virtual machine to exit frequently.

[0010] When the virtual machine exits, a lot of state saving and switching work is required, and these states need to be restored when entering the virtualized state again. Therefore, the exit of the virtual machine is cumbersome and time-consuming.

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