Reading the same address in an infinite loop is quite common in the multi-die/core real time low latency systems. In fact this is exactly what you are doing - w

Reading the same address in an infinite loop is quite common in the multi-die/core real time low latency systems. In fact this is exactly what you are doing - when reading the FIFO queue pointers, etc. And rather than relying on QPI/cache coherency, you may even want to forcefully flush the cache every time you read, to reduce the latency.....