diff -r f348cf78072c src/arch/mips/remote_gdb.cc
--- a/src/arch/mips/remote_gdb.cc	Thu Jan 12 10:15:00 2012 -0500
+++ b/src/arch/mips/remote_gdb.cc	Fri Jan 13 03:22:43 2012 +0800
@@ -133,8 +133,6 @@
 #include <sys/signal.h>
 #include <unistd.h>
 
-#include <string>
-
 #include "arch/mips/remote_gdb.hh"
 #include "arch/mips/vtophys.hh"
 #include "config/full_system.hh"
@@ -144,7 +142,6 @@
 #include "debug/GDBMisc.hh"
 #include "mem/page_table.hh"
 
-using namespace std;
 using namespace MipsISA;
 
 RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc)
@@ -159,12 +156,25 @@
 RemoteGDB::acc(Addr va, size_t len)
 {
 #if FULL_SYSTEM
-    panic("acc not implemented for MIPS FS!");
-#endif
+    Addr last_va;
+    va = TruncPage(va);
+    last_va = RoundPage(va + len);
+
+    do {
+        if (vtophys(va) != -1) {
+            return true;
+        }
+        va += PageBytes;
+    } while (va < last_va);
+
+    DPRINTF(GDBAcc, "acc:   %#x mapping is valid\n", va);
+    return true;
+#else
     TlbEntry entry;
     //Check to make sure the first byte is mapped into the processes address
     //space.
     return context->getProcessPtr()->pTable->lookup(va, entry);
+#endif
 }
 
 /*