diff -r 570a27a1612f -r 8ca660dbac7e src/mem/AbstractMemory.py
--- a/src/mem/AbstractMemory.py	Mon Sep 10 17:17:27 2012 +0100
+++ b/src/mem/AbstractMemory.py	Mon Sep 10 17:17:33 2012 +0100
@@ -46,7 +46,6 @@
     type = 'AbstractMemory'
     abstract = True
     range = Param.AddrRange(AddrRange('128MB'), "Address range")
-    file = Param.String('', "Memory-mapped file")
     null = Param.Bool(False, "Do not store data, always return zero")
     zero = Param.Bool(False, "Initialize memory with zeros")
 
diff -r 570a27a1612f -r 8ca660dbac7e src/mem/abstract_mem.cc
--- a/src/mem/abstract_mem.cc	Mon Sep 10 17:17:27 2012 +0100
+++ b/src/mem/abstract_mem.cc	Mon Sep 10 17:17:33 2012 +0100
@@ -75,29 +75,13 @@
     if (params()->null)
         return;
 
-    if (params()->file == "") {
-        int map_flags = MAP_ANON | MAP_PRIVATE;
-        pmemAddr = (uint8_t *)mmap(NULL, size(),
-                                   PROT_READ | PROT_WRITE, map_flags, -1, 0);
-    } else {
-        int map_flags = MAP_PRIVATE;
-        int fd = open(params()->file.c_str(), O_RDONLY);
-        long _size = lseek(fd, 0, SEEK_END);
-        if (_size != range.size()) {
-            fatal("Specified size %d does not match file %s %d\n",
-                  range.size(), params()->file, _size);
-        }
-        lseek(fd, 0, SEEK_SET);
-        pmemAddr = (uint8_t *)mmap(NULL, roundUp(_size, sysconf(_SC_PAGESIZE)),
-                                   PROT_READ | PROT_WRITE, map_flags, fd, 0);
-    }
+    int map_flags = MAP_ANON | MAP_PRIVATE;
+    pmemAddr = (uint8_t *)mmap(NULL, size(),
+                               PROT_READ | PROT_WRITE, map_flags, -1, 0);
 
     if (pmemAddr == (void *)MAP_FAILED) {
         perror("mmap");
-        if (params()->file == "")
-            fatal("Could not mmap!\n");
-        else
-            fatal("Could not find file: %s\n", params()->file);
+        fatal("Could not mmap!\n");
     }
 
     //If requested, initialize all the memory to 0