Patent ID: 8301917
Filing Date: 2012-10-30
Classification: G06F,Y02D

Abstract:
1. An apparatus to support power management among multiple processing system partitions, the apparatus comprising: a first interrupt handler to execute in a first partition of a processing system, wherein the processing system includes a first processing unit for operating the first partition and a second processing unit for operating a second partition, wherein the first interrupt handler is to support power management of the first partition, and wherein the first interrupt handler, in response to an interrupt to transition the first partition from a first power mode to a second power mode that consumes less power than the first power mode, is to place the first partition in a third power mode that consumes less power than the first power mode, but more power than the second power mode; and a second interrupt handler to execute in the second partition, wherein the second interrupt handler is to support power management of the second partition and the first partition, wherein the second interrupt handler, in response to the interrupt, is to take control of determining when the first partition is to leave the third power mode and return to the first power mode.