diff options
| -rw-r--r-- | src/mem/cache/cache.cc | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mem/cache/cache.cc b/src/mem/cache/cache.cc index 48382814f..e139b54a2 100644 --- a/src/mem/cache/cache.cc +++ b/src/mem/cache/cache.cc @@ -1437,7 +1437,18 @@ Cache::recvTimingResp(PacketPtr pkt) assert(!is_error); // response to snoop request DPRINTF(Cache, "processing deferred snoop...\n"); - assert(!(is_invalidate && !mshr->hasPostInvalidate())); + // If the response is invalidating, a snooping target can + // be satisfied if it is also invalidating. If the reponse is, not + // only invalidating, but more specifically an InvalidateResp, the + // MSHR was created due to an InvalidateReq and a cache above is + // waiting to satisfy a WriteLineReq. In this case even an + // non-invalidating snoop is added as a target here since this is + // the ordering point. When the InvalidateResp reaches this cache, + // the snooping target will snoop further the cache above with the + // WriteLineReq. + assert(!(is_invalidate && + pkt->cmd != MemCmd::InvalidateResp && + !mshr->hasPostInvalidate())); handleSnoop(tgt_pkt, blk, true, true, mshr->hasPostInvalidate()); break; |