diff options
| -rw-r--r-- | src/mem/cache/cache_impl.hh | 8 | ||||
| -rw-r--r-- | src/mem/packet.hh | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/mem/cache/cache_impl.hh b/src/mem/cache/cache_impl.hh index 4f4d720b6..86bf79b7b 100644 --- a/src/mem/cache/cache_impl.hh +++ b/src/mem/cache/cache_impl.hh @@ -360,6 +360,9 @@ Cache<TagStore>::access(PacketPtr pkt, BlkType *&blk, } std::memcpy(blk->data, pkt->getPtr<uint8_t>(), blkSize); blk->status |= BlkDirty; + if (pkt->isSupplyExclusive()) { + blk->status |= BlkWritable; + } // nothing else to do; writeback doesn't expect response assert(!pkt->needsResponse()); incHitCount(pkt, id); @@ -1007,6 +1010,9 @@ Cache<TagStore>::writebackBlk(BlkType *blk) Request *writebackReq = new Request(tags->regenerateBlkAddr(blk->tag, blk->set), blkSize, 0); PacketPtr writeback = new Packet(writebackReq, MemCmd::Writeback, -1); + if (blk->isWritable()) { + writeback->setSupplyExclusive(); + } writeback->allocate(); std::memcpy(writeback->getPtr<uint8_t>(), blk->data, blkSize); @@ -1307,6 +1313,8 @@ Cache<TagStore>::snoopTiming(PacketPtr pkt) pkt->assertMemInhibit(); if (!pkt->needsExclusive()) { pkt->assertShared(); + // the writeback is no longer the exclusive copy in the system + wb_pkt->clearSupplyExclusive(); } else { // if we're not asserting the shared line, we need to // invalidate our copy. we'll do that below as long as diff --git a/src/mem/packet.hh b/src/mem/packet.hh index cefb7c2ed..48b80879e 100644 --- a/src/mem/packet.hh +++ b/src/mem/packet.hh @@ -422,6 +422,7 @@ class Packet : public FastAlloc, public Printable void setExpressSnoop() { flags.set(EXPRESS_SNOOP); } bool isExpressSnoop() { return flags.isSet(EXPRESS_SNOOP); } void setSupplyExclusive() { flags.set(SUPPLY_EXCLUSIVE); } + void clearSupplyExclusive() { flags.clear(SUPPLY_EXCLUSIVE); } bool isSupplyExclusive() { return flags.isSet(SUPPLY_EXCLUSIVE); } // Network error conditions... encapsulate them as methods since |