diff -r cb730fd07f83 -r 37a8d7c8af2b src/mem/ruby/system/RubyPort.hh
--- a/src/mem/ruby/system/RubyPort.hh	Tue Jan 03 18:39:43 2012 -0600
+++ b/src/mem/ruby/system/RubyPort.hh	Tue Jan 03 18:41:14 2012 -0600
@@ -147,6 +147,8 @@
     uint64_t m_request_cnt;
 
     M5Port* physMemPort;
+    typedef std::vector<M5Port*>::iterator CpuPortIter;
+    std::vector<M5Port*> cpu_ports;
 
     PhysicalMemory* physmem;
     RubySystem* ruby_system;
diff -r cb730fd07f83 -r 37a8d7c8af2b src/mem/ruby/system/RubyPort.cc
--- a/src/mem/ruby/system/RubyPort.cc	Tue Jan 03 18:39:43 2012 -0600
+++ b/src/mem/ruby/system/RubyPort.cc	Tue Jan 03 18:41:14 2012 -0600
@@ -66,8 +66,10 @@
 RubyPort::getPort(const std::string &if_name, int idx)
 {
     if (if_name == "port") {
-        return new M5Port(csprintf("%s-port%d", name(), idx), this,
-                          ruby_system, access_phys_mem);
+        M5Port* cpuPort = new M5Port(csprintf("%s-port%d", name(), idx),
+                                     this, ruby_system, access_phys_mem);
+        cpu_ports.push_back(cpuPort);
+        return cpuPort;
     }
 
     if (if_name == "pio_port") {