diff -r 7100059f7bfd -r 161ed9e77ee2 src/arch/arm/table_walker.hh
--- a/src/arch/arm/table_walker.hh	Mon May 14 20:31:33 2012 -0500
+++ b/src/arch/arm/table_walker.hh	Thu May 17 13:10:48 2012 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2010-2012 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -51,7 +51,6 @@
 #include "sim/eventq.hh"
 #include "sim/fault_fwd.hh"
 
-class DmaPort;
 class ThreadContext;
 
 namespace ArmISA {
@@ -260,6 +259,40 @@
 
     };
 
+  protected:
+
+    /**
+     * A snooping DMA port that currently does nothing besides
+     * extending the DMA port to accept snoops without complaining.
+     */
+    class SnoopingDmaPort : public DmaPort
+    {
+
+      protected:
+
+        virtual void recvTimingSnoopReq(PacketPtr pkt)
+        { }
+
+        virtual Tick recvAtomicSnoop(PacketPtr pkt)
+        { return 0; }
+
+        virtual void recvFunctionalSnoop(PacketPtr pkt)
+        { }
+
+        virtual bool isSnooping() const { return true; }
+
+      public:
+
+        /**
+         * A snooping DMA port merely calls the construtor of the DMA
+         * port.
+         */
+        SnoopingDmaPort(MemObject *dev, System *s, Tick min_backoff,
+                        Tick max_backoff) :
+            DmaPort(dev, s, min_backoff, max_backoff)
+        { }
+    };
+
     struct WalkerState //: public SimObject
     {
         /** Thread context that we're doing the walk for */
@@ -329,7 +362,7 @@
 
 
     /** Port to issue translation requests from */
-    DmaPort port;
+    SnoopingDmaPort port;
 
     /** TLB that is initiating these table walks */
     TLB *tlb;
diff -r 7100059f7bfd -r 161ed9e77ee2 src/arch/arm/table_walker.cc
--- a/src/arch/arm/table_walker.cc	Mon May 14 20:31:33 2012 -0500
+++ b/src/arch/arm/table_walker.cc	Thu May 17 13:10:48 2012 +0100
@@ -51,7 +51,7 @@
 
 TableWalker::TableWalker(const Params *p)
     : MemObject(p), port(this, params()->sys, params()->min_backoff,
-                         params()->max_backoff, true),
+                         params()->max_backoff),
       tlb(NULL), currState(NULL), pending(false),
       masterId(p->sys->getMasterId(name())),
       doL1DescEvent(this), doL2DescEvent(this), doProcessEvent(this)
diff -r 7100059f7bfd -r 161ed9e77ee2 src/dev/io_device.hh
--- a/src/dev/io_device.hh	Mon May 14 20:31:33 2012 -0500
+++ b/src/dev/io_device.hh	Thu May 17 13:10:48 2012 +0100
@@ -143,34 +143,10 @@
      * it is that it's sending. */
     bool inRetry;
 
-    /** Port accesses a cache which requires snooping */
-    bool recvSnoops;
-
     virtual bool recvTimingResp(PacketPtr pkt);
 
-    virtual void recvTimingSnoopReq(PacketPtr pkt)
-    {
-        if (!recvSnoops)
-            panic("%s was not expecting a snoop\n", name());
-    }
-
-    virtual Tick recvAtomicSnoop(PacketPtr pkt)
-    {
-        if (!recvSnoops)
-            panic("%s was not expecting a snoop\n", name());
-        return 0;
-    }
-
-    virtual void recvFunctionalSnoop(PacketPtr pkt)
-    {
-        if (!recvSnoops)
-            panic("%s was not expecting a snoop\n", name());
-    }
-
     virtual void recvRetry() ;
 
-    virtual bool isSnooping() const { return recvSnoops; }
-
     void queueDma(PacketPtr pkt, bool front = false);
     void sendDma();
 
@@ -178,8 +154,7 @@
     EventWrapper<DmaPort, &DmaPort::sendDma> backoffEvent;
 
   public:
-    DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff,
-            bool recv_snoops = false);
+    DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff);
 
     void dmaAction(Packet::Command cmd, Addr addr, int size, Event *event,
                    uint8_t *data, Tick delay, Request::Flags flag = 0);
diff -r 7100059f7bfd -r 161ed9e77ee2 src/dev/io_device.cc
--- a/src/dev/io_device.cc	Mon May 14 20:31:33 2012 -0500
+++ b/src/dev/io_device.cc	Thu May 17 13:10:48 2012 +0100
@@ -120,13 +120,12 @@
 }
 
 
-DmaPort::DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff,
-                 bool recv_snoops)
-    : MasterPort(dev->name() + "-dmaport", dev), device(dev), sys(s),
+DmaPort::DmaPort(MemObject *dev, System *s, Tick min_backoff, Tick max_backoff)
+    : MasterPort(dev->name() + "-dma", dev), device(dev), sys(s),
       masterId(s->getMasterId(dev->name())),
       pendingCount(0), actionInProgress(0), drainEvent(NULL),
       backoffTime(0), minBackoffDelay(min_backoff),
-      maxBackoffDelay(max_backoff), inRetry(false), recvSnoops(recv_snoops),
+      maxBackoffDelay(max_backoff), inRetry(false),
       backoffEvent(this)
 { }