From: Steve Reinhardt <stever@eecs.umich.edu>
Date: Fri, 27 Jul 2007 00:04:16 +0000 (-0700)
Subject: Continue snooping after a writeback is encountered.
X-Git-Tag: m5_2.0_beta4~195^2~31
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f1b5c8fb57ee656df3a1b9d021de723279f66b2f;p=gem5.git

Continue snooping after a writeback is encountered.

--HG--
extra : convert_revision : 8411338a6c0fdd7072dd32bdffacdace62d5de90
---

diff --git a/src/mem/cache/cache_impl.hh b/src/mem/cache/cache_impl.hh
index fa2f45632..6db40b609 100644
--- a/src/mem/cache/cache_impl.hh
+++ b/src/mem/cache/cache_impl.hh
@@ -1064,7 +1064,13 @@ Cache<TagStore>::snoopTiming(PacketPtr pkt)
                 // Invalidation trumps our writeback... discard here
                 markInService(mshr);
             }
-            return;
+
+            // If this was a shared writeback, there may still be
+            // other shared copies above that require invalidation.
+            // We could be more selective and return here if the
+            // request is non-exclusive or if the writeback is
+            // exclusive.
+            break;
         }
     }