Providing external interrupt serialization compatibility in a mu

Details Providing external interrupt serialization compatibility in a mu Providing external interrupt serialization compatibility in a mu

1994-12-16

1996-09-24

Sheikh, Ayaz R.

Boots, shoes, and leggings

395474, 395868, 364DIG1, 364230, 3642302, 3642303, G06F 1300

Patent

active

055600182

ABSTRACT:
Methods and apparatus provide external interrupt serialization compatibility for a multiprocessing environment so that software written to run in a uniprocessor environment can run without degradation caused by inadequate or improper handling. When a processor receives an external interrupt, the interrupt manager will acquire an external interrupt spinlock. Once acquired, the interrupt manager will transfer control to the external interrupt service routine and upon return from that routine, the interrupt manager will release the external interrupt spinlock. Also, protection of processor execution state in a multiprocessor environment is provided using the same spinlock.

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Transformation of Simple Locks in Pageable Kernel, P. L. De Backer, J. S. Peek, Technical Disclosure Bulletin, v36, n3, Mar. 1993, pp. 385-386.

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