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Guy Harris (talk | contribs) Shoulder tap (software) discusses the same concept, but in the context of S/3x0 and OS/360 and successors. |
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An '''inter-processor interrupt''' ('''IPI''') is a special type of [[interrupt]] by which one processor may interrupt another processor in a [[multiprocessor]] system. IPIs are typically used to implement a [[cache coherency]] [[synchronization]] point.
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