X86: Add a config for an FS regression on O3.

diff --git a/tests/configs/pc-o3-timing.py b/tests/configs/pc-o3-timing.py
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+++ b/tests/configs/pc-o3-timing.py
@@ -0,0 +1,115 @@
+# Copyright (c) 2006-2007 The Regents of The University of Michigan
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met: redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer;
+# redistributions in binary form must reproduce the above copyright
+# notice, this list of conditions and the following disclaimer in the
+# documentation and/or other materials provided with the distribution;
+# neither the name of the copyright holders nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: Steve Reinhardt
+
+import m5
+from m5.objects import *
+m5.util.addToPath('../configs/common')
+from Benchmarks import SysConfig
+import FSConfig
+
+mem_size = '128MB'
+
+# --------------------
+# Base L1 Cache
+# ====================
+
+class L1(BaseCache):
+    latency = '1ns'
+    block_size = 64
+    mshrs = 4
+    tgts_per_mshr = 8
+    is_top_level = True
+
+# ----------------------
+# Base L2 Cache
+# ----------------------
+
+class L2(BaseCache):
+    block_size = 64
+    latency = '10ns'
+    mshrs = 92
+    tgts_per_mshr = 16
+    write_buffers = 8
+
+# ---------------------
+# Page table walker cache
+# ---------------------
+class PageTableWalkerCache(BaseCache):
+    assoc = 2
+    block_size = 64
+    latency = '1ns'
+    mshrs = 10
+    size = '1kB'
+    tgts_per_mshr = 12
+
+# ---------------------
+# I/O Cache
+# ---------------------
+class IOCache(BaseCache):
+    assoc = 8
+    block_size = 64
+    latency = '50ns'
+    mshrs = 20
+    size = '1kB'
+    tgts_per_mshr = 12
+    addr_range = AddrRange(0, size=mem_size)
+    forward_snoops = False
+
+#cpu
+cpu = DerivO3CPU(cpu_id=0)
+#the system
+mdesc = SysConfig(disk = 'linux-x86.img')
+system = FSConfig.makeLinuxX86System('timing', mdesc=mdesc)
+system.kernel = FSConfig.binary('x86_64-vmlinux-2.6.22.9')
+system.bridge.filter_ranges_a = [AddrRange(0, Addr.max >> 4)]
+system.bridge.filter_ranges_b = [AddrRange(0, size=mem_size)]
+system.iocache = IOCache(addr_range=mem_size)
+system.iocache.cpu_side = system.iobus.port
+system.iocache.mem_side = system.membus.port
+
+system.cpu = cpu
+#create the l1/l2 bus
+system.toL2Bus = Bus()
+
+#connect up the l2 cache
+system.l2c = L2(size='4MB', assoc=8)
+system.l2c.cpu_side = system.toL2Bus.port
+system.l2c.mem_side = system.membus.port
+
+#connect up the cpu and l1s
+cpu.addPrivateSplitL1Caches(L1(size = '32kB', assoc = 1),
+                            L1(size = '32kB', assoc = 4),
+                            PageTableWalkerCache(),
+                            PageTableWalkerCache())
+# connect cpu level-1 caches to shared level-2 cache
+cpu.connectAllPorts(system.toL2Bus, system.membus)
+cpu.clock = '2GHz'
+
+root = Root(system=system)
+m5.ticks.setGlobalFrequency('1THz')
+