Selection of target virtual processor for servicing virtual interrupt

Abstract

apparatus comprises interrupt delivery circuitry to deliver, to a virtual interrupt interface of a given physical processor, a given virtual interrupt associated with a target virtual machine, where the given virtual interrupt is to be serviced by a target virtual processor of the target virtual machine. Virtual processor selection circuitry determines whether the given virtual interrupt is a targeted virtual interrupt (for which a pre-assigned virtual processor of the target virtual machine is constrained to be selected as the target virtual processor) or a 1‑of‑N virtual interrupt (for which the virtual processor selection circuitry is allowed to select the target virtual processor from among a plurality of virtual processors of the target virtual machine). For a 1-of-N virtual interrupt, the target virtual processor is selected depending on virtual processor status information indicative of a status of a plurality of virtual processors of the target virtual machine. [Figure

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