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-rw-r--r--src/mem/coherent_xbar.cc16
1 files changed, 13 insertions, 3 deletions
diff --git a/src/mem/coherent_xbar.cc b/src/mem/coherent_xbar.cc
index 7c3a4e314..ef0620822 100644
--- a/src/mem/coherent_xbar.cc
+++ b/src/mem/coherent_xbar.cc
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2011-2016 ARM Limited
+ * Copyright (c) 2011-2017 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -661,8 +661,18 @@ CoherentXBar::recvAtomic(PacketPtr pkt, PortID slave_port_id)
// between and change the filter state
snoopFilter->finishRequest(false, pkt->getAddr(), pkt->isSecure());
- snoop_result = forwardAtomic(pkt, slave_port_id, InvalidPortID,
- sf_res.first);
+ if (pkt->isEviction()) {
+ // for block-evicting packets, i.e. writebacks and
+ // clean evictions, there is no need to snoop up, as
+ // all we do is determine if the block is cached or
+ // not, instead just set it here based on the snoop
+ // filter result
+ if (!sf_res.first.empty())
+ pkt->setBlockCached();
+ } else {
+ snoop_result = forwardAtomic(pkt, slave_port_id, InvalidPortID,
+ sf_res.first);
+ }
} else {
snoop_result = forwardAtomic(pkt, slave_port_id);
}