Redirection of interrupts to microprocessors

Details Redirection of interrupts to microprocessors Redirection of interrupts to microprocessors

1994-05-27

1995-06-27

MacDonald, Allen R.

Boots, shoes, and leggings

364DIG1, 364230, 3642302, 3642412, 364242, 3642421, G06F 946

Patent

active

054287995

ABSTRACT:
A redirector in either software or hardware can is used to distribute global interrupts among all processors of a multiprocessor (MP) system, which may have multiple architecturally-isolated buses. When redirecting interrupts using software, a default processor receives all interrupts and redirects them to destination processors. When redirecting interrupts using hardware, a discrete redirector in hardware forwards all interrupts to particular processors based on a routing, or look-up, table. Another implementation incorporates interrupt snooping with either software or hardware interrupt redirection where interrupt response is critical for I/O cards.

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