# HG changeset patch
# Parent b7b46e77ed2f01bf34182ff25f18e1240903b47c

diff -r b7b46e77ed2f src/mem/cache/prefetch/stride.cc
--- a/src/mem/cache/prefetch/stride.cc	Fri Sep 06 10:51:27 2013 -0500
+++ b/src/mem/cache/prefetch/stride.cc	Fri Sep 06 10:55:13 2013 -0500
@@ -67,12 +67,17 @@
         bool stride_match = (new_stride == (*iter)->stride);
 
         if (stride_match && new_stride != 0) {
+            (*iter)->tolerance = true;
             if ((*iter)->confidence < Max_Conf)
                 (*iter)->confidence++;
         } else {
-            (*iter)->stride = new_stride;
-            if ((*iter)->confidence > Min_Conf)
-                (*iter)->confidence = 0;
+            if (!((*iter)->tolerance)) {
+                (*iter)->stride = new_stride;
+                if ((*iter)->confidence > Min_Conf)
+                    (*iter)->confidence = 0;
+            } else {
+                (*iter)->tolerance = false;
+            }
         }
 
         DPRINTF(HWPrefetch, "hit: PC %x data_addr %x stride %d (%s), conf %d\n",
@@ -85,7 +90,7 @@
             return;
 
         for (int d = 1; d <= degree; d++) {
-            Addr new_addr = data_addr + d * new_stride;
+            Addr new_addr = data_addr + d * (*iter)->stride;
             if (pageStop && !samePage(data_addr, new_addr)) {
                 // Spanned the page, so now stop
                 pfSpanPage += degree - d + 1;
@@ -124,6 +129,7 @@
         new_entry->missAddr = data_addr;
         new_entry->stride = 0;
         new_entry->confidence = 0;
+        new_entry->tolerance = false;
         tab.push_back(new_entry);
     }
 }
diff -r b7b46e77ed2f src/mem/cache/prefetch/stride.hh
--- a/src/mem/cache/prefetch/stride.hh	Fri Sep 06 10:51:27 2013 -0500
+++ b/src/mem/cache/prefetch/stride.hh	Fri Sep 06 10:55:13 2013 -0500
@@ -59,6 +59,7 @@
         Addr missAddr;
         int stride;
         int confidence;
+        bool tolerance;
     };
 
     Addr *lastMissAddr[Max_Contexts];