Interrupt request and message signalled interrupt logic for passthru processing

A computer program product comprising:

• at least one computer-readable medium having instructions encoded therein, the instructions when executed by at least one processor cause said at least one processor to
• operate for interrupt handling by steps comprising the acts of:
• receiving a message signaled interrupt associated with a peripheral device by a first interrupt service routine;
• calling a second interrupt service routine responsive to receiving the message signaled interrupt;
• and
• emulating a line-based interrupt transaction into the second interrupt service routine.

A method comprising:

• an act of modulating a signal onto an electro-magnetic carrier wave impressed into a tangible medium, or of demodulating the signal from the electro-magnetic carrier wave, the signal having instructions encoded therein, the instructions when executed by at least one processor causing said at least one processor to
• operate for interrupt handling by steps comprising the acts of:
• receiving a message signaled interrupt associated with a peripheral device by a first interrupt service routine;
• calling a second interrupt service routine responsive to receiving the message signaled interrupt;
• and
• emulating a line-based interrupt transaction into the second interrupt service routine.

An electronic device comprising:

• a controller;
• and
• a memory having instructions encoded therein, the instructions when executed by the controller cause said controller to
• operate for interrupt handling by steps comprising the acts of:
• receiving a message signaled interrupt associated with a peripheral device by a first interrupt service routine;
• calling a second interrupt service routine responsive to receiving the message signaled interrupt;
• and
• emulating a line-based interrupt transaction into the second interrupt service routine.