Method, computer system, and apparatus for accessing peripheral component interconnect express endpoint device
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United States of America Patent
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Apr 26, 2016
Grant Date -
Aug 27, 2015
app pub date -
May 7, 2015
filing date -
May 20, 2013
priority date (Note) -
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Abstract
Embodiments of the present invention relate to a peripheral component interconnect express endpoint device accessing method, a computer system, and an apparatus. A state of an access request sent by a processor is monitored, and a simulation response message for the access request is sent to the processor when it is determined that the PCIe endpoint device sends no response message for the access request. Therefore, according to the simulation response message, the processor can confirm completion of the procedure corresponding to the previously sent access request, and shut down a timer for timing the access request and clear the buffered access request, thereby keeping normal processing in the processor and avoiding the MCE resetting problem that arises from accumulation of access requests in the processor.
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