公开(公告)号：US11579920B2

公开(公告)日：2023-02-14

申请号：US16934355

申请日：2020-07-21

Applicant: Arm Limited

Inventor： Timothy Nicholas Hay ,  Nathan William Whitaker ,  Haralds Capkevics

IPC: G06F9/48 ,  G06F9/455 ,  G06F9/50

Abstract: An apparatus comprises an interrupt distributor to distribute virtual interrupts to one or more physical processors, each virtual interrupt to be handled by one of a plurality of virtual processors mappable to said one or more physical processors; and control circuitry to maintain virtual processor interrupt tracking information corresponding to a given virtual processor. The virtual processor interrupt tracking information includes a pending interrupt record tracking which types of virtual interrupts are pending for the given virtual processor, and separate from the pending interrupt record, a pending interrupt status indication indicating a pending interrupt status for the given virtual processor. The pending interrupt status indicates whether the number of pending virtual interrupts for the given virtual processor is zero.