Reducing interrupt latency while polling
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United States of America Patent
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May 9, 2006
Grant Date -
Feb 12, 2004
app pub date -
Aug 8, 2002
filing date -
Aug 8, 2002
priority date (Note) -
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Abstract
Systems, methods, and software for reducing system management interrupt (SMI) latency while operating in system management mode. The present invention implements a technique for exiting system management mode while waiting for polled hardware events, handling any pending lower-priority interrupts and then resuming polling. The present invention does this by multi-threading SMI source handlers, using an idle thread, and using protocols for software-generated system management interrupts that insure that lower priority interrupts are serviced.
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