Cache: add a response latency to the caches

In the current caches the hit latency is paid twice on a miss. This patch lets
a configurable response latency be set of the cache for the backward path.

1 files changed, 2 insertions, 1 deletions

diff --git a/tests/configs/o3-timing.py b/tests/configs/o3-timing.py
index a10079ab8..0646f1c26 100644
--- a/tests/configs/o3-timing.py
+++ b/tests/configs/o3-timing.py
@@ -33,7 +33,8 @@ m5.util.addToPath('../configs/common')
 class MyCache(BaseCache):
     assoc = 2
     block_size = 64
-    latency = '1ns'
+    hit_latency = '1ns'
+    response_latency = '1ns'
     mshrs = 10
     tgts_per_mshr = 5