diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mem/cache/cache.cc | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/src/mem/cache/cache.cc b/src/mem/cache/cache.cc index 97df5625b..48974c73e 100644 --- a/src/mem/cache/cache.cc +++ b/src/mem/cache/cache.cc @@ -1,5 +1,5 @@ /* - * Copyright (c) 2010-2016 ARM Limited + * Copyright (c) 2010-2017 ARM Limited * All rights reserved. * * The license below extends only to copyright in the software and shall @@ -1336,16 +1336,17 @@ Cache::recvTimingResp(PacketPtr pkt) Tick forward_time = clockEdge(forwardLatency) + pkt->headerDelay; - // upgrade deferred targets if the response has no sharers, and is - // thus passing writable - if (!pkt->hasSharers()) { - mshr->promoteWritable(); - } - bool is_fill = !mshr->isForward && (pkt->isRead() || pkt->cmd == MemCmd::UpgradeResp); CacheBlk *blk = tags->findBlock(pkt->getAddr(), pkt->isSecure()); + const bool valid_blk = blk && blk->isValid(); + // If the response indicates that there are no sharers and we + // either had the block already or the response is filling we can + // promote our copy to writable + if (!pkt->hasSharers() && (is_fill || valid_blk)) { + mshr->promoteWritable(); + } if (is_fill && !is_error) { DPRINTF(Cache, "Block for addr %#llx being updated in Cache\n", |