Method and apparatus for managing power from a sequestered partition of a processing system

A method for managing power in a processing system, the method comprising:

• in response to a request to transition a first partition of a processing system being operated by a first processing unit of the processing system from a first power mode to a second power mode that consumes less power than the first power mode, transitioning the first partition, by a first interrupt handler associated with the first partition, to a third power mode that consumes less power than the first power mode, but more power than the second power mode;
• additionally, in response to the request, taking control, by a second interrupt handler, associated with a second partition of the processing system being operated by a second processing unit of the processing system, over determining when the first partition is to leave the third power mode and return to the first power mode.

At least one non-transitory storage medium comprising instructions stored therein, configured to enable a processing system, in response to execution of the instructions, to manage power consumption by a first and a second partition respectively operated by a first and a second processing unit of the processing system, wherein management of power consumption includes:

• a first interrupt handler to execute in the first 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.