def load_kvm_modules(module_dir):
"""
Unload previously loaded kvm modules, then load modules present on any
sub directory of module_dir. Function will walk through module_dir until
it finds the modules.
@param module_dir: Directory where the KVM modules are located.
"""
vendor = "intel"
if os.system("grep vmx /proc/cpuinfo 1>/dev/null") != 0:
vendor = "amd"
logging.debug("Detected CPU vendor as '%s'" %(vendor))
logging.debug("Killing any qemu processes that might be left behind")
utils.system("pkill qemu", ignore_status=True)
logging.info("Unloading previously loaded KVM modules")
kvm_utils.unload_module("kvm")
if utils.module_is_loaded("kvm"):
message = "Failed to remove old KVM modules"
logging.error(message)
raise error.TestError(message)
logging.info("Loading new KVM modules...")
kvm_module_path = None
kvm_vendor_module_path = None
# Search for the built KVM modules
for folder, subdirs, files in os.walk(module_dir):
if "kvm.ko" in files:
kvm_module_path = os.path.join(folder, "kvm.ko")
kvm_vendor_module_path = os.path.join(folder, "kvm-%s.ko" % vendor)
abort = False
if not kvm_module_path:
logging.error("Need a directory containing both kernel module and "
"userspace sources.")
logging.error("If you are trying to build only KVM userspace and use "
"the KVM modules you have already loaded, put "
"'load_modules': 'no' on the control file 'params' "
"dictionary.")
raise error.TestError("Could not find a built kvm.ko module on the "
"source dir.")
elif not os.path.isfile(kvm_vendor_module_path):
logging.error("Could not find KVM (%s) module that was supposed to be"
" built on the source dir", vendor)
abort = True
if abort:
raise error.TestError("Could not load KVM modules.")
utils.system("/sbin/insmod %s" % kvm_module_path)
time.sleep(1)
utils.system("/sbin/insmod %s" % kvm_vendor_module_path)
if not utils.module_is_loaded("kvm"):
message = "Failed to load the KVM modules built for the test"
logging.error(message)
raise error.TestError(message)
def load_kvm_modules(module_dir=None, load_stock=False, extra_modules=None):
"""
Unload previously loaded kvm modules, then load modules present on any
sub directory of module_dir. Function will walk through module_dir until
it finds the modules.
@param module_dir: Directory where the KVM modules are located.
@param load_stock: Whether we are going to load system kernel modules.
@param extra_modules: List of extra modules to load.
"""
vendor = "intel"
if os.system("grep vmx /proc/cpuinfo 1>/dev/null") != 0:
vendor = "amd"
logging.debug("Detected CPU vendor as '%s'" %(vendor))
kill_qemu_processes()
logging.info("Unloading previously loaded KVM modules")
kvm_utils.unload_module("kvm")
if extra_modules:
for module in extra_modules:
kvm_utils.unload_module(module)
if module_dir:
logging.info("Loading the built KVM modules...")
kvm_module_path = None
kvm_vendor_module_path = None
abort = False
list_modules = ['kvm.ko', 'kvm-%s.ko' % vendor]
if extra_modules:
for extra_module in extra_modules:
list_modules.append('%s.ko' % extra_module)
list_module_paths = []
for folder, subdirs, files in os.walk(module_dir):
for module in list_modules:
if module in files:
module_path = os.path.join(folder, module)
list_module_paths.append(module_path)
# We might need to arrange the modules in the correct order
# to avoid module load problems
list_modules_load = []
for module in list_modules:
for module_path in list_module_paths:
if os.path.basename(module_path) == module:
list_modules_load.append(module_path)
if len(list_module_paths) != len(list_modules):
logging.error("KVM modules not found. If you don't want to use the "
"modules built by this test, make sure the option "
"load_modules: 'no' is marked on the test control "
"file.")
raise error.TestError("The modules %s were requested to be loaded, "
"but the only modules found were %s" %
(list_modules, list_module_paths))
for module_path in list_modules_load:
try:
utils.system("insmod %s" % module_path)
except Exception, e:
raise error.TestFail("Failed to load KVM modules: %s" % e)
