diff options
Diffstat (limited to 'src/mem/cache/cache.cc')
| -rw-r--r-- | src/mem/cache/cache.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mem/cache/cache.cc b/src/mem/cache/cache.cc index e139b54a2..1a169c8ea 100644 --- a/src/mem/cache/cache.cc +++ b/src/mem/cache/cache.cc @@ -1393,6 +1393,17 @@ Cache::recvTimingResp(PacketPtr pkt) pkt->payloadDelay; tgt_pkt->req->setExtraData(0); } else { + // We are about to send a response to a cache above + // that asked for an invalidation; we need to + // invalidate our copy immediately as the most + // up-to-date copy of the block will now be in the + // cache above. It will also prevent this cache from + // responding (if the block was previously dirty) to + // snoops as they should snoop the caches above where + // they will get the response from. + if (is_invalidate && blk && blk->isValid()) { + invalidateBlock(blk); + } // not a cache fill, just forwarding response // responseLatency is the latency of the return path // from lower level cahces/memory to the core. |