Patent ID: 8166254
Filing Date: 2012-04-24
Classification: G06F

Abstract:
1. A method of addressing a hypervisor page fault in a shared memory partition data processing system, the method comprising: responsive to an executing virtual processor encountering a hypervisor page fault, allocating an input/output (I/O) paging request to the virtual processor from an I/O paging request pool and incrementing an outstanding I/O paging request count for the virtual processor; and determining whether the outstanding I/O paging request count for the virtual processor is at a predefined threshold, and if not, placing the virtual processor in a wait state with interrupt wake-up reasons enabled based on the virtual processor's state, and if the outstanding I/O paging request count for the virtual processor is at the predefined threshold, then placing the virtual processor in a wait state with interrupt wake-up reasons disabled.