Method for delivering interrupts to user mode drivers

Details Method for delivering interrupts to user mode drivers Method for delivering interrupts to user mode drivers

2005-05-16

2009-08-25

Auve, Glenn A (Department: 2111)

Electrical computers and digital data processing systems: input/

Interrupt processing

Reexamination Certificate

active

07581051

ABSTRACT:
Systems and methods for providing a framework within which device drivers may run at a user-mode level. A platform (e.g., APIC) or bus (PCI bus) generic feature is used to take the CPU out of interrupt mode without having to wait for a user-level driver to clear the device interrupt. This allows writing the complete device driver in user space. The device driver still get notifications on interrupts but not at interrupt priority. The same scheme can be extended to shared interrupts, where multiple devices share a single interrupt line.

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