Synchronizing with Interrupts
If a miniport driver's MiniportInterrupt function shares resources, such as NIC registers or state variables, with another MiniportXxx function that runs at a lower IRQL, that MiniportXxx function must call NdisMSynchronizeWithInterruptEx. This call ensures that the miniport driver's MiniportSynchronizeInterrupt function accesses the shared resources in a synchronized and multiprocessor-safe manner.
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