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config: Add a KVM VM to systems with KVM CPUs

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KVM-based CPUs need a KVM VM object in the system to manage
system-global KVM stuff (VM creation, interrupt delivery, memory
managment, etc.). This changeset adds a VM to the system if KVM has
been enabled at compile time (the BaseKvmCPU object exists) and a
KVM-based CPU has been selected at runtime.
This commit is contained in:
Andreas Sandberg 2013-04-22 13:20:32 -04:00
parent 2607efded8
commit 7865d6e838
1 changed files with 13 additions and 0 deletions
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13
configs/example/fs.py
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@ -71,6 +71,13 @@ if args:
DriveCPUClass = AtomicSimpleCPU DriveCPUClass = AtomicSimpleCPU
drive_mem_mode = 'atomic' drive_mem_mode = 'atomic'
# Check if KVM support has been enabled, we might need to do VM
# configuration if that's the case.
have_kvm_support = 'BaseKvmCPU' in globals()
def is_kvm_cpu(cpu_class):
return have_kvm_support and cpu_class != None and \
issubclass(cpu_class, BaseKvmCPU)
# system under test can be any CPU # system under test can be any CPU
(TestCPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options) (TestCPUClass, test_mem_mode, FutureClass) = Simulation.setCPUClass(options)
@ -116,6 +123,9 @@ test_sys.init_param = options.init_param
test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)] test_sys.cpu = [TestCPUClass(cpu_id=i) for i in xrange(np)]
if is_kvm_cpu(TestCPUClass) or is_kvm_cpu(FutureClass):
test_sys.vm = KvmVM()
if options.caches or options.l2cache: if options.caches or options.l2cache:
test_sys.iocache = IOCache(clock = '1GHz', test_sys.iocache = IOCache(clock = '1GHz',
addr_ranges = test_sys.mem_ranges) addr_ranges = test_sys.mem_ranges)
@ -163,6 +173,9 @@ if len(bm) == 2:
if options.kernel is not None: if options.kernel is not None:
drive_sys.kernel = binary(options.kernel) drive_sys.kernel = binary(options.kernel)
if is_kvm_cpu(DriveCPUClass):
drive_sys.vm = KvmVM()
drive_sys.iobridge = Bridge(delay='50ns', drive_sys.iobridge = Bridge(delay='50ns',
ranges = drive_sys.mem_ranges) ranges = drive_sys.mem_ranges)
drive_sys.iobridge.slave = drive_sys.iobus.master drive_sys.iobridge.slave = drive_sys.iobus.master