Merge branch 'master' into 2.0

gns3server/compute/qemu/qemu_vm.py

@@ -1489,6 +1489,11 @@ class QemuVM(BaseNode):
         command.extend(["-smp", "cpus={}".format(self._cpus)])
         if self._run_with_kvm(self.qemu_path, self._options):
             command.extend(["-enable-kvm"])
+            version = yield from self.manager.get_qemu_version(self.qemu_path)
+            # Issue on some combo Intel CPU + KVM + Qemu 2.4.0
+            # https://github.com/GNS3/gns3-server/issues/685
+            if version and parse_version(version) >= parse_version("2.4.0"):
+                command.extend(["-machine smm=off"])
         command.extend(["-boot", "order={}".format(self._boot_priority)])
         cdrom_option = self._cdrom_option()
         command.extend(cdrom_option)

gns3server/compute/virtualbox/virtualbox_vm.py

@@ -265,7 +265,7 @@ class VirtualBoxVM(BaseNode):
                 log.debug("Stop result: {}".format(result))
 
             log.info("VirtualBox VM '{name}' [{id}] stopped".format(name=self.name, id=self.id))
-            # yield from asyncio.sleep(0.5)  # give some time for VirtualBox to unlock the VM
+            yield from asyncio.sleep(0.5)  # give some time for VirtualBox to unlock the VM
             try:
                 # deactivate the first serial port
                 yield from self._modify_vm("--uart1 off")