Method and apparatus for interruption handling

Abstract

The invention discloses an interrupt processing method and an apparatus thereof. The interrupt processing method stores a plurality of registry information items in a virtual machine system, and each registry information item is corresponding to an interrupt and contains the mark, level and waiting mark information of a registered client operating system that are corresponding to the interrupt. The invention comprises the following steps: when an interrupt happens, the interrupt is injected directly to the client operating system that is registered to the interrupt in a designated level, and the waiting marks of the client operating systems that are registered to the interrupt but not injected are set to a waiting status; when a client operating system is scheduled to run, the method determines whether the client operating system needs to be injected with an interrupt according to the waiting mark inside the registry information stored in the virtual machine system, and if necessary, the interrupt is injected into the client operating system, and the waiting mark of the client operating system that is corresponding to the interrupt is set to an initial status. The method improves the injection efficiency of client operating systems that are registered to an interrupt in a designated level.

Description

technical field [0001] The invention relates to interrupt processing technology, in particular to an interrupt processing method and device. Background technique [0002] Generally speaking, in a virtual machine environment, multiple guest operating systems (Guest OS) are running at the same time. When the guest operating system needs the service of the hardware device, it usually needs to register in the interrupt vector list. When a hardware interrupt occurs, the virtual machine monitor (VMM) obtains all registered guest operating systems corresponding to the interrupt in the interrupt vector list, injects the interrupt into them respectively and writes the interrupt status into the virtual interrupt control corresponding to the registered guest operating system device. In the prior art, the operation of injecting the interrupt into the guest operating system is usually performed sequentially with the virtual interrupt controller writing the interrupt status into the gue...

AI Technical Summary

Problems solved by technology

When an interrupt occurs, all registered guest operating systems must be interrupted. When there are many registered guest operating systems, the interrupt delay will be too large, and the guest operating system that needs to process the interrupt task in time cannot provide timely Response and processing

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