CPU: Check that the interrupt controller is created when needed

This patch adds a creation-time check to the CPU to ensure that the
interrupt controller is created for the cases where it is needed,
i.e. if the CPU is not being switched in later and not a checker CPU.

The patch also adds the "createInterruptController" call to a number
of the regression scripts.

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/configs/o3-timing-mp.py b/tests/configs/o3-timing-mp.py
index 1974d686f..1a0718fa8 100644
--- a/tests/configs/o3-timing-mp.py
+++ b/tests/configs/o3-timing-mp.py
@@ -71,6 +71,8 @@ system.l2c.mem_side = system.membus.slave
 for cpu in cpus:
     cpu.addPrivateSplitL1Caches(L1(size = '32kB', assoc = 1),
                                 L1(size = '32kB', assoc = 4))
+    # create the interrupt controller
+    cpu.createInterruptController()
     # connect cpu level-1 caches to shared level-2 cache
     cpu.connectAllPorts(system.toL2Bus, system.membus)
     cpu.clock = '2GHz'