METHOD FOR EXECUTING A REQUEST TO EXCHANGE DATA BETWEEN FIRST AND SECOND DISJOINT PHYSICAL ADDRESSING SPACES OF CHIP OR CARD CIRCUIT
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United States of America Patent
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Feb 4, 2016
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Feb 9, 2015
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Abstract
This method for executing a request to exchange data, between first and second disjoint physical addressing spaces controlled by first and second distinct circuits for first and second respective software processes, comprises the creation of a communication channel between these two circuits. It further comprises sending, by the first process, of said request to exchange data, this request designates a virtual address in a virtual addressing space of the second process, and execution of the request to exchange data between the disjoint physical addressing spaces of the two processes, without invoking a processor executing the second process. During creation of the channel, a translation of the virtual addressing space of the second process into its physical addressing space is created and associated with this channel in the second circuit. During execution of the request, data for identification of the channel is added to the virtual address designated in the request.
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