Hi Shehab, Your understanding is correct, there are some cases that are not being handled. This https://gem5-review.googlesource.com/c/public/gem5/+/18414 patched MOESI_CMP_directory to some extent (there was no cache latency being considered before) but was not a complete solution. Other then the case you mentioned, MOESI_CMP_directory is also currently missing the transaction annotations so it can generate stalls on cache/directory bank access conflicts.
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