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| author | Marco Elver <marco.elver@ed.ac.uk> | 2015-06-07 14:02:40 -0500 |
|---|---|---|
| committer | Marco Elver <marco.elver@ed.ac.uk> | 2015-06-07 14:02:40 -0500 |
| commit | 6599dd87c8332e4db3d898c9a28531ce2740c37f (patch) | |
| tree | 6b17c6af452a2473c4f9d96ae2073e00297af65e | |
| parent | 25fe4c25291db84c314ed979b3afbb49a3fa7306 (diff) | |
| download | gem5-6599dd87c8332e4db3d898c9a28531ce2740c37f.tar.xz | |
ruby: Fix MESI consistency bug
Fixes missed forward eviction to CPU. With the O3CPU this can lead to load-load
reordering, as the LQ is never notified of the invalidate.
Committed by: Nilay Vaish <nilay@cs.wisc.edu>
| -rw-r--r-- | src/mem/protocol/MESI_Two_Level-L1cache.sm | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mem/protocol/MESI_Two_Level-L1cache.sm b/src/mem/protocol/MESI_Two_Level-L1cache.sm index b449c4f2b..4f9928bf1 100644 --- a/src/mem/protocol/MESI_Two_Level-L1cache.sm +++ b/src/mem/protocol/MESI_Two_Level-L1cache.sm @@ -1341,6 +1341,7 @@ machine(L1Cache, "MESI Directory L1 Cache CMP") // transitions from SM transition(SM, Inv, IM) { + forward_eviction_to_cpu; fi_sendInvAck; dg_invalidate_sc; l_popRequestQueue; |