Add flag for disabling the VirtualBox VTX check

Currently this is broken upstream, provide workaround...

Already available in docker-machine, so port to minikube.

Author: afbjorklund

cmd/minikube/cmd/start.go

@@ -85,6 +85,7 @@ const (
 	vsockPorts            = "hyperkit-vsock-ports"
 	gpu                   = "gpu"
 	embedCerts            = "embed-certs"
+	noVTXCheck            = "no-vtx-check"
 )
 
 var (
@@ -139,6 +140,7 @@ func init() {
 	startCmd.Flags().String(vpnkitSock, "", "Location of the VPNKit socket used for networking. If empty, disables Hyperkit VPNKitSock, if 'auto' uses Docker for Mac VPNKit connection, otherwise uses the specified VSock.")
 	startCmd.Flags().StringSlice(vsockPorts, []string{}, "List of guest VSock ports that should be exposed as sockets on the host (Only supported on with hyperkit now).")
 	startCmd.Flags().Bool(gpu, false, "Enable experimental NVIDIA GPU support in minikube (works only with kvm2 driver on Linux)")
+	startCmd.Flags().Bool(noVTXCheck, false, "Disable checking for the availability of hardware virtualization before the vm is started (virtualbox)")
 	viper.BindPFlags(startCmd.Flags())
 	RootCmd.AddCommand(startCmd)
 }
@@ -282,6 +284,7 @@ func generateConfig(cmd *cobra.Command, kVersion string) (cfg.Config, error) {
 			DisableDriverMounts: viper.GetBool(disableDriverMounts),
 			UUID:                viper.GetString(uuid),
 			GPU:                 viper.GetBool(gpu),
+			NoVTXCheck:          viper.GetBool(noVTXCheck),
 		},
 		KubernetesConfig: cfg.KubernetesConfig{
 			KubernetesVersion:      kVersion,

pkg/minikube/config/types.go

@@ -52,6 +52,7 @@ type MachineConfig struct {
 	NFSSharesRoot       string
 	UUID                string // Only used by hyperkit to restore the mac address
 	GPU                 bool   // Only used by kvm2
+	NoVTXCheck          bool   // Only used by virtualbox
 }
 
 // KubernetesConfig contains the parameters used to configure the VM Kubernetes.

pkg/minikube/drivers/virtualbox/driver.go

@@ -46,6 +46,7 @@ func createVirtualboxHost(config cfg.MachineConfig) interface{} {
 	d.DiskSize = int(config.DiskSize)
 	d.HostOnlyCIDR = config.HostOnlyCIDR
 	d.NoShare = config.DisableDriverMounts
+	d.NoVTXCheck = config.NoVTXCheck
 	d.NatNicType = defaultVirtualboxNicType
 	d.HostOnlyNicType = defaultVirtualboxNicType
 	d.DNSProxy = false