![]() ![]() There are a number of different ways that Msg TLP routing can be specified by a sending device. A Msg is a sort of general-purpose TLP that is used for several purposes (PCI compatibility interrupt signaling, power management, hot plug signaling and more, in addition to error signaling), and is differentiated from other TLP types (Memory Read request, Memory Write request, Completion, Configuration read/write, and so forth).Īn error Msg TLP is a message from the device that detected the error specifying the class of error that was detected and in which device it was detected. PCI-Express errors are reported with a specific type of TLP (Transaction Layer Packet) called Message Request (abbreviated Msg).
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