Patching All path above but the problem still there. This is my nova-compute log
2014-04-19 01:41:22.842 4397 INFO nova.virt.libvirt.driver [req-1ee12afe-c0ec-4d82-a6a5-3280407ca8e1 67ac350f0a164433ac342b4960300341 a3ace7f03db4449db2b57f95fadc94ea] Instance launched has CPU info:
{"vendor": "Intel", "model": "core2duo", "arch": "x86_64", "features": ["lahf_lm", "rdtscp", "lahf_lm", "rdtscp", "lm", "nx", "syscall", "ssse3", "monitor", "pni", "sse2", "sse", "fxsr", "mmx", "clflush", "pse36", "pat", "cmov", "mca", "pge", "mtrr", "sep", "apic", "cx8", "mce", "pae", "msr", "tsc", "pse", "de", "vme", "fpu"], "topology": {"cores": 1, "threads": 1, "sockets": 1}}
2014-04-19 01:41:22.846 4397 ERROR nova.virt.libvirt.driver [req-1ee12afe-c0ec-4d82-a6a5-3280407ca8e1 67ac350f0a164433ac342b4960300341 a3ace7f03db4449db2b57f95fadc94ea] CPU doesn't have compatibility.

XML error: CPU feature `lahf_lm' specified more than once

Refer to http://libvirt.org/html/libvirt-libvirt.html#virCPUCompareResult
2014-04-19 01:41:22.868 4397 ERROR oslo.messaging.rpc.dispatcher [-] Exception during message handling: XML error: CPU feature `lahf_lm' specified more than once
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 88, in wrapped
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     payload)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 71, in wrapped
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 309, in decorated_function
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     e, sys.exc_info())
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in decorated_function
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4418, in check_can_live_migrate_destination
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     block_migration, disk_over_commit)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4189, in check_can_live_migrate_destination
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     self._compare_cpu(source_cpu_info)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4331, in _compare_cpu
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     except libvirt.libvirtError as e:
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4327, in _compare_cpu
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     m = _("CPU doesn't have compatibility.\n\n%(ret)s\n\nRefer to %(u)s")
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     result = proxy_call(self._autowrap, f, *args, **kwargs)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     rv = execute(f,*args,**kwargs)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     rv = meth(*args,**kwargs)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3191, in compareCPU
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher     if ret == -1: raise libvirtError ('virConnectCompareCPU() failed', conn=self)
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher libvirtError: XML error: CPU feature `lahf_lm' specified more than once
2014-04-19 01:41:22.868 4397 TRACE oslo.messaging.rpc.dispatcher 
2014-04-19 01:41:22.873 4397 ERROR oslo.messaging._drivers.common [-] Returning exception XML error: CPU feature `lahf_lm' specified more than once to caller
2014-04-19 01:41:22.873 4397 ERROR oslo.messaging._drivers.common [-] ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 133, in _dispatch_and_reply\n    incoming.message))\n', '  File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 176, in _dispatch\n    return self._do_dispatch(endpoint, method, ctxt, args)\n', '  File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 122, in _do_dispatch\n    result = getattr(endpoint, method)(ctxt, **new_args)\n', '  File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 88, in wrapped\n    payload)\n', '  File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 71, in wrapped\n    return f(self, context, *args, **kw)\n', '  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 309, in decorated_function\n    e, sys.exc_info())\n', '  File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in decorated_function\n    return function(self, context, *args, **kwargs)\n', '  File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4418, in check_can_live_migrate_destination\n    block_migration, disk_over_commit)\n', '  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4189, in check_can_live_migrate_destination\n    self._compare_cpu(source_cpu_info)\n', '  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4331, in _compare_cpu\n    except libvirt.libvirtError as e:\n', '  File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__\n    six.reraise(self.type_, self.value, self.tb)\n', '  File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 4327, in _compare_cpu\n    m = _("CPU doesn\'t have compatibility.\\n\\n%(ret)s\\n\\nRefer to %(u)s")\n', '  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 179, in doit\n    result = proxy_call(self._autowrap, f, *args, **kwargs)\n', '  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 139, in proxy_call\n    rv = execute(f,*args,**kwargs)\n', '  File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 77, in tworker\n    rv = meth(*args,**kwargs)\n', '  File "/usr/lib/python2.7/dist-packages/libvirt.py", line 3191, in compareCPU\n    if ret == -1: raise libvirtError (\'virConnectCompareCPU() failed\', conn=self)\n', "libvirtError: XML error: CPU feature `lahf_lm' specified more than once\n"]