Preventing general purpose event interrupt storms in a...

Details Preventing general purpose event interrupt storms in a... Preventing general purpose event interrupt storms in a...

2005-08-16

2005-08-16

Du, Thuan (Department: 2116)

Electrical computers and digital processing systems: support

Computer power control

By external command

C719S318000, C710S262000

Reexamination Certificate

active

06931553

ABSTRACT:
A method and system for selectively enabling wake events in software of a computer system to overcome problems arising when hardware devices fail to clear a wake signal. The operating system manages wake events, and also distinguishes between events that are exclusively wake events, exclusively run-time events, and shared wake and run-time events. At boot time, the ACPI driver examines system tables provided by firmware to determine which GPEs are associated with wake-up events, either exclusively or shared with run-time events. These wake event associations are tracked and managed differently from events received on other hardware register pins. When the operating system receives events in a GPE Status hardware register that is enabled in a counterpart Enable register, the operating system runs an associated GPE method. When the GPE method has completed, the operating system selectively determines whether the event needs to be re-enabled.

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Research Disclosure, Jun. 1999, UK-13 “Improved Personal Computer Home Control Using Power and Boot Sequence Control” Jun. 1, 1999—vol. 42, Issue 422.

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