diff -r 5c248f09514d -r 243a8cee6d6f configs/ruby/MOESI_hammer.py
--- a/configs/ruby/MOESI_hammer.py	Tue Jan 03 18:14:44 2012 -0600
+++ b/configs/ruby/MOESI_hammer.py	Tue Jan 03 18:18:39 2012 -0600
@@ -88,7 +88,8 @@
         #
         l1i_cache = L1Cache(size = options.l1i_size,
                             assoc = options.l1i_assoc,
-                            start_index_bit = block_size_bits)
+                            start_index_bit = block_size_bits,
+                            is_icache = True)
         l1d_cache = L1Cache(size = options.l1d_size,
                             assoc = options.l1d_assoc,
                             start_index_bit = block_size_bits)
diff -r 5c248f09514d -r 243a8cee6d6f src/mem/ruby/system/Cache.py
--- a/src/mem/ruby/system/Cache.py	Tue Jan 03 18:14:44 2012 -0600
+++ b/src/mem/ruby/system/Cache.py	Tue Jan 03 18:18:39 2012 -0600
@@ -39,3 +39,4 @@
     assoc = Param.Int("");
     replacement_policy = Param.String("PSEUDO_LRU", "");
     start_index_bit = Param.Int(6, "index start, default 6 for 64-byte line");
+    is_icache = Param.Bool(False, "is instruction only cache");
diff -r 5c248f09514d -r 243a8cee6d6f src/mem/ruby/system/CacheMemory.cc
--- a/src/mem/ruby/system/CacheMemory.cc	Tue Jan 03 18:14:44 2012 -0600
+++ b/src/mem/ruby/system/CacheMemory.cc	Tue Jan 03 18:18:39 2012 -0600
@@ -55,6 +55,7 @@
     m_policy = p->replacement_policy;
     m_profiler_ptr = new CacheProfiler(name());
     m_start_index_bit = p->start_index_bit;
+    m_is_instruction_only_cache = p->is_icache;
 }
 
 void