diff --git a/ocaml/idl/datamodel_errors.ml b/ocaml/idl/datamodel_errors.ml
index 6d1107855f0..890c3bdd9b5 100644
--- a/ocaml/idl/datamodel_errors.ml
+++ b/ocaml/idl/datamodel_errors.ml
@@ -430,6 +430,8 @@ let _ =
   error Api_errors.vgpu_type_not_supported
     ["type"; "supported_types"]
     ~doc:"VGPU type is not one of the PGPU's supported types." () ;
+  error Api_errors.vgpu_type_no_longer_supported ["type"]
+    ~doc:"VGPU type is no longer supported" () ;
   error Api_errors.vgpu_type_not_compatible_with_running_type
     ["pgpu"; "type"; "running_type"]
     ~doc:
diff --git a/ocaml/xapi-consts/api_errors.ml b/ocaml/xapi-consts/api_errors.ml
index 9d5851fbbe8..a278c00ebba 100644
--- a/ocaml/xapi-consts/api_errors.ml
+++ b/ocaml/xapi-consts/api_errors.ml
@@ -603,6 +603,8 @@ let vgpu_type_not_enabled = "VGPU_TYPE_NOT_ENABLED"
 
 let vgpu_type_not_supported = "VGPU_TYPE_NOT_SUPPORTED"
 
+let vgpu_type_no_longer_supported = "VGPU_TYPE_NO_LONGER_SUPPORTED"
+
 let vgpu_type_not_compatible_with_running_type =
   "VGPU_TYPE_NOT_COMPATIBLE_WITH_RUNNING_TYPE"
 
diff --git a/ocaml/xapi/message_forwarding.ml b/ocaml/xapi/message_forwarding.ml
index 0e60aff0555..406b7d67b0f 100644
--- a/ocaml/xapi/message_forwarding.ml
+++ b/ocaml/xapi/message_forwarding.ml
@@ -1329,6 +1329,7 @@ functor
       let allocate_vm_to_host ~__context ~vm ~host ~snapshot ?host_op () =
         info "Reserve resources for VM %s on host %s" (Ref.string_of vm)
           (Ref.string_of host) ;
+        Xapi_vm_helpers.assert_no_legacy_hardware ~__context ~vm ;
         ( match host_op with
         | Some x ->
             let task_id = Ref.string_of (Context.get_task_id __context) in
@@ -1768,6 +1769,7 @@ functor
 
       let start ~__context ~vm ~start_paused ~force =
         info "VM.start: VM = '%s'" (vm_uuid ~__context vm) ;
+        Xapi_vm_helpers.assert_no_legacy_hardware ~__context ~vm ;
         let local_fn = Local.VM.start ~vm ~start_paused ~force in
         let host =
           with_vm_operation ~__context ~self:vm ~doc:"VM.start" ~op:`start
@@ -2274,6 +2276,7 @@ functor
       (* Like start.. resume on any suitable host *)
       let resume ~__context ~vm ~start_paused ~force =
         info "VM.resume: VM = '%s'" (vm_uuid ~__context vm) ;
+        Xapi_vm_helpers.assert_no_legacy_hardware ~__context ~vm ;
         let local_fn = Local.VM.resume ~vm ~start_paused ~force in
         let host =
           with_vm_operation ~__context ~self:vm ~doc:"VM.resume" ~op:`resume
@@ -2314,6 +2317,7 @@ functor
         info "VM.resume_on: VM = '%s'; host = '%s'" (vm_uuid ~__context vm)
           (host_uuid ~__context host) ;
         let local_fn = Local.VM.resume_on ~vm ~host ~start_paused ~force in
+        Xapi_vm_helpers.assert_no_legacy_hardware ~__context ~vm ;
         with_vm_operation ~__context ~self:vm ~doc:"VM.resume_on" ~op:`resume_on
           (fun () ->
             with_vbds_marked ~__context ~vm ~doc:"VM.resume_on" ~op:`attach
diff --git a/ocaml/xapi/xapi_globs.ml b/ocaml/xapi/xapi_globs.ml
index 638896e0a1e..de61e63878e 100644
--- a/ocaml/xapi/xapi_globs.ml
+++ b/ocaml/xapi/xapi_globs.ml
@@ -456,6 +456,9 @@ let xapi_extensions_root = ref "/etc/xapi.d/extensions"
 
 let host_operations_miami = [`evacuate; `provision]
 
+(* Whether still support intel gvt-g vGPU *)
+let gvt_g_supported = ref true
+
 let rpu_allowed_vm_operations =
   [
     `assert_operation_valid
@@ -1226,6 +1229,11 @@ let other_options =
     , (fun () -> !gvt_g_whitelist)
     , "path to the GVT-g whitelist file"
     )
+  ; ( "gvt-g-supported"
+    , Arg.Set gvt_g_supported
+    , (fun () -> string_of_bool !gvt_g_supported)
+    , "indicates that this server still support intel gvt_g vGPU"
+    )
   ; ( "mxgpu-whitelist"
     , Arg.Set_string mxgpu_whitelist
     , (fun () -> !mxgpu_whitelist)
diff --git a/ocaml/xapi/xapi_vgpu_type.ml b/ocaml/xapi/xapi_vgpu_type.ml
index dc01aabd509..530507c714d 100644
--- a/ocaml/xapi/xapi_vgpu_type.ml
+++ b/ocaml/xapi/xapi_vgpu_type.ml
@@ -14,7 +14,7 @@
 
 let finally = Xapi_stdext_pervasives.Pervasiveext.finally
 
-module D = Debug.Make (struct let name = "xapi" end)
+module D = Debug.Make (struct let name = "xapi_vgpu_type" end)
 
 open D
 
@@ -1069,7 +1069,7 @@ let find_or_create_supported_types ~__context ~pci =
     match vendor_id with
     | x when x = Nvidia.vendor_id ->
         Nvidia.find_or_create_supported_types
-    | x when x = Intel.vendor_id ->
+    | x when x = Intel.vendor_id && !Xapi_globs.gvt_g_supported ->
         Intel.find_or_create_supported_types
     | x when x = AMD.vendor_id ->
         AMD.find_or_create_supported_types
@@ -1090,3 +1090,14 @@ let requires_passthrough ~__context ~self =
       None
 
 (* Does not require any passthrough *)
+
+let assert_not_legacy ~__context ~self =
+  let legacy =
+    (not !Xapi_globs.gvt_g_supported)
+    && Db.VGPU_type.get_implementation ~__context ~self = `gvt_g
+  in
+  if legacy then
+    let vendor = Db.VGPU_type.get_vendor_name ~__context ~self in
+    let model = Db.VGPU_type.get_model_name ~__context ~self in
+    let msg = [Printf.sprintf "%s: %s" vendor model] in
+    raise Api_errors.(Server_error (vgpu_type_no_longer_supported, msg))
diff --git a/ocaml/xapi/xapi_vm_helpers.ml b/ocaml/xapi/xapi_vm_helpers.ml
index 65216c6d72b..d5512651bc2 100644
--- a/ocaml/xapi/xapi_vm_helpers.ml
+++ b/ocaml/xapi/xapi_vm_helpers.ml
@@ -666,6 +666,14 @@ let assert_enough_pcpus ~__context ~self ~host ?remote () =
             (host_not_enough_pcpus, List.map Int64.to_string [vcpus; pcpus])
         )
 
+let assert_no_legacy_vgpu ~__context ~vm =
+  Db.VM.get_VGPUs ~__context ~self:vm
+  |> List.map (fun self -> Db.VGPU.get_type ~__context ~self)
+  |> List.iter (fun self -> Xapi_vgpu_type.assert_not_legacy ~__context ~self)
+
+let assert_no_legacy_hardware ~__context ~vm =
+  assert_no_legacy_vgpu ~__context ~vm
+
 (** Checks to see if a VM can boot on a particular host, throws an error if not.
  * Criteria:
     - The host must support the VM's required Virtual Hardware Platform version.
@@ -692,6 +700,7 @@ let assert_can_boot_here ~__context ~self ~host ~snapshot ~do_cpuid_check
     ?(do_sr_check = true) ?(do_memory_check = true) () =
   debug "Checking whether VM %s can run on host %s" (Ref.string_of self)
     (Ref.string_of host) ;
+  assert_no_legacy_hardware ~__context ~vm:self ;
   validate_basic_parameters ~__context ~self ~snapshot ;
   assert_host_is_live ~__context ~host ;
   assert_matches_control_domain_affinity ~__context ~self ~host ;
@@ -716,6 +725,7 @@ let assert_can_boot_here ~__context ~self ~host ~snapshot ~do_cpuid_check
   if vm_needs_iommu ~__context ~self then
     assert_host_has_iommu ~__context ~host ;
   (* Assumption: a VM can have only one vGPU *)
+  assert_no_legacy_vgpu ~__context ~vm:self ;
   if has_non_allocated_vgpus ~__context ~self then
     assert_gpus_available ~__context ~self ~host ;
   assert_usbs_available ~__context ~self ~host ;
diff --git a/ocaml/xapi/xapi_vm_migrate.ml b/ocaml/xapi/xapi_vm_migrate.ml
index abbf9adb30a..f7fd9b3caa1 100644
--- a/ocaml/xapi/xapi_vm_migrate.ml
+++ b/ocaml/xapi/xapi_vm_migrate.ml
@@ -1684,6 +1684,7 @@ let migration_type ~__context ~remote =
 
 let assert_can_migrate ~__context ~vm ~dest ~live:_ ~vdi_map ~vif_map ~options
     ~vgpu_map =
+  Xapi_vm_helpers.assert_no_legacy_hardware ~__context ~vm ;
   assert_licensed_storage_motion ~__context ;
   let remote = remote_of_dest ~__context dest in
   let force =