Management of speculative transactions

Circuitry for receiving transaction requests from a plurality of masters and the masters themselves are disclosed. The circuitry comprises: an input port for receiving said transaction requests, at least one of said transaction requests received comprising an indicator indicating if said transaction...

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Bibliographic Details
Main Authors CROXFORD DAREN, STEVENS ASHLEY MILES
Format Patent
LanguageEnglish
Published 09.04.2013
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:Circuitry for receiving transaction requests from a plurality of masters and the masters themselves are disclosed. The circuitry comprises: an input port for receiving said transaction requests, at least one of said transaction requests received comprising an indicator indicating if said transaction is a speculative transaction; an output port for outputting a response to said master said transaction request was received from; and transaction control circuitry; wherein said transaction control circuitry is responsive to a speculative transaction request to determine a state of at least a portion of a data processing apparatus said circuitry is operating within and in response to said state being a predetermined state said transaction control circuitry generates a transaction cancel indicator and outputs said transaction cancel indicator as said response, said transaction cancel indicator indicating to said master that said speculative transaction will not be performed.
Bibliography:Application Number: US20070004475