diff --git a/libs/vr/libdisplay/Android.bp b/libs/vr/libdisplay/Android.bp
index d90521a..c0c7e2f 100644
--- a/libs/vr/libdisplay/Android.bp
+++ b/libs/vr/libdisplay/Android.bp
@@ -45,6 +45,7 @@
 
 headerLibraries = [
     "vulkan_headers",
+    "libdvr_headers",
 ]
 
 cc_library {
diff --git a/libs/vr/libdisplay/display_client.cpp b/libs/vr/libdisplay/display_client.cpp
index 935ca2e..6e5d432 100644
--- a/libs/vr/libdisplay/display_client.cpp
+++ b/libs/vr/libdisplay/display_client.cpp
@@ -176,14 +176,14 @@
     return ErrorStatus(error);
 }
 
-Status<std::unique_ptr<IonBuffer>> DisplayClient::GetNamedBuffer(
-    const std::string& name) {
-  auto status = InvokeRemoteMethod<DisplayProtocol::GetNamedBuffer>(name);
+Status<std::unique_ptr<IonBuffer>> DisplayClient::GetGlobalBuffer(
+    DvrGlobalBufferKey key) {
+  auto status = InvokeRemoteMethod<DisplayProtocol::GetGlobalBuffer>(key);
   if (!status) {
     ALOGE(
-        "DisplayClient::GetNamedBuffer: Failed to get named buffer: name=%s; "
+        "DisplayClient::GetGlobalBuffer: Failed to get named buffer: key=%d; "
         "error=%s",
-        name.c_str(), status.GetErrorMessage().c_str());
+        key, status.GetErrorMessage().c_str());
     return status.error_status();
   }
 
@@ -192,9 +192,9 @@
   const int ret = native_buffer_handle.Import(ion_buffer.get());
   if (ret < 0) {
     ALOGE(
-        "DisplayClient::GetNamedBuffer: Failed to import named buffer: "
-        "name=%s; error=%s",
-        name.c_str(), strerror(-ret));
+        "DisplayClient::GetGlobalBuffer: Failed to import global buffer: "
+        "key=%d; error=%s",
+        key, strerror(-ret));
     return ErrorStatus(-ret);
   }
 
diff --git a/libs/vr/libdisplay/display_manager_client.cpp b/libs/vr/libdisplay/display_manager_client.cpp
index a99f2a3..47c4599 100644
--- a/libs/vr/libdisplay/display_manager_client.cpp
+++ b/libs/vr/libdisplay/display_manager_client.cpp
@@ -32,13 +32,13 @@
   return status;
 }
 
-pdx::Status<std::unique_ptr<IonBuffer>> DisplayManagerClient::SetupNamedBuffer(
-    const std::string& name, size_t size, uint64_t usage) {
-  auto status = InvokeRemoteMethod<DisplayManagerProtocol::SetupNamedBuffer>(
-      name, size, usage);
+pdx::Status<std::unique_ptr<IonBuffer>> DisplayManagerClient::SetupGlobalBuffer(
+    DvrGlobalBufferKey key, size_t size, uint64_t usage) {
+  auto status = InvokeRemoteMethod<DisplayManagerProtocol::SetupGlobalBuffer>(
+      key, size, usage);
   if (!status) {
     ALOGE(
-        "DisplayManagerClient::SetupPoseBuffer: Failed to create the named "
+        "DisplayManagerClient::SetupGlobalBuffer: Failed to create the global "
         "buffer %s",
         status.GetErrorMessage().c_str());
     return status.error_status();
@@ -49,9 +49,9 @@
   const int ret = native_buffer_handle.Import(ion_buffer.get());
   if (ret < 0) {
     ALOGE(
-        "DisplayClient::GetNamedBuffer: Failed to import named buffer: "
-        "name=%s; error=%s",
-        name.c_str(), strerror(-ret));
+        "DisplayClient::GetGlobalBuffer: Failed to import global buffer: "
+        "key=%d; error=%s",
+        key, strerror(-ret));
     return ErrorStatus(-ret);
   }
 
diff --git a/libs/vr/libdisplay/include/private/dvr/display_client.h b/libs/vr/libdisplay/include/private/dvr/display_client.h
index 7a7f670..e5b3340 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_client.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_client.h
@@ -1,6 +1,7 @@
 #ifndef ANDROID_DVR_DISPLAY_CLIENT_H_
 #define ANDROID_DVR_DISPLAY_CLIENT_H_
 
+#include <dvr/dvr_api.h>
 #include <hardware/hwcomposer.h>
 #include <pdx/client.h>
 #include <pdx/file_handle.h>
@@ -67,8 +68,8 @@
 class DisplayClient : public pdx::ClientBase<DisplayClient> {
  public:
   pdx::Status<Metrics> GetDisplayMetrics();
-  pdx::Status<std::unique_ptr<IonBuffer>> GetNamedBuffer(
-      const std::string& name);
+  pdx::Status<std::unique_ptr<IonBuffer>> GetGlobalBuffer(
+      DvrGlobalBufferKey key);
   pdx::Status<std::unique_ptr<Surface>> CreateSurface(
       const SurfaceAttributes& attributes);
 
diff --git a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
index a5b4e7e..8bf12b6 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_manager_client.h
@@ -21,8 +21,8 @@
   ~DisplayManagerClient() override;
 
   pdx::Status<std::vector<SurfaceState>> GetSurfaceState();
-  pdx::Status<std::unique_ptr<IonBuffer>> SetupNamedBuffer(
-      const std::string& name, size_t size, uint64_t usage);
+  pdx::Status<std::unique_ptr<IonBuffer>> SetupGlobalBuffer(
+      DvrGlobalBufferKey key, size_t size, uint64_t usage);
   pdx::Status<std::unique_ptr<ConsumerQueue>> GetSurfaceQueue(int surface_id,
                                                               int queue_id);
 
diff --git a/libs/vr/libdisplay/include/private/dvr/display_protocol.h b/libs/vr/libdisplay/include/private/dvr/display_protocol.h
index 19bfb30..b22ddfa 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_protocol.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_protocol.h
@@ -8,6 +8,7 @@
 
 #include <dvr/dvr_display_types.h>
 
+#include <dvr/dvr_api.h>
 #include <pdx/rpc/buffer_wrapper.h>
 #include <pdx/rpc/remote_method.h>
 #include <pdx/rpc/serializable.h>
@@ -192,7 +193,7 @@
   // Op codes.
   enum {
     kOpGetMetrics = 0,
-    kOpGetNamedBuffer,
+    kOpGetGlobalBuffer,
     kOpIsVrAppRunning,
     kOpCreateSurface,
     kOpGetSurfaceInfo,
@@ -206,8 +207,8 @@
 
   // Methods.
   PDX_REMOTE_METHOD(GetMetrics, kOpGetMetrics, Metrics(Void));
-  PDX_REMOTE_METHOD(GetNamedBuffer, kOpGetNamedBuffer,
-                    LocalNativeBufferHandle(std::string name));
+  PDX_REMOTE_METHOD(GetGlobalBuffer, kOpGetGlobalBuffer,
+                    LocalNativeBufferHandle(DvrGlobalBufferKey key));
   PDX_REMOTE_METHOD(IsVrAppRunning, kOpIsVrAppRunning, bool(Void));
   PDX_REMOTE_METHOD(CreateSurface, kOpCreateSurface,
                     SurfaceInfo(const SurfaceAttributes& attributes));
@@ -232,7 +233,7 @@
   enum {
     kOpGetSurfaceState = 0,
     kOpGetSurfaceQueue,
-    kOpSetupNamedBuffer,
+    kOpSetupGlobalBuffer,
     kOpGetConfigurationData,
   };
 
@@ -245,9 +246,9 @@
                     std::vector<SurfaceState>(Void));
   PDX_REMOTE_METHOD(GetSurfaceQueue, kOpGetSurfaceQueue,
                     LocalChannelHandle(int surface_id, int queue_id));
-  PDX_REMOTE_METHOD(SetupNamedBuffer, kOpSetupNamedBuffer,
-                    LocalNativeBufferHandle(const std::string& name,
-                                            size_t size, uint64_t usage));
+  PDX_REMOTE_METHOD(SetupGlobalBuffer, kOpSetupGlobalBuffer,
+                    LocalNativeBufferHandle(DvrGlobalBufferKey key, size_t size,
+                                            uint64_t usage));
   PDX_REMOTE_METHOD(GetConfigurationData, kOpGetConfigurationData,
                     std::string(ConfigFileType config_type));
 };
diff --git a/libs/vr/libdvr/dvr_display_manager.cpp b/libs/vr/libdvr/dvr_display_manager.cpp
index 40d93ba..e67e8c3 100644
--- a/libs/vr/libdvr/dvr_display_manager.cpp
+++ b/libs/vr/libdvr/dvr_display_manager.cpp
@@ -112,19 +112,20 @@
 
 void dvrDisplayManagerDestroy(DvrDisplayManager* client) { delete client; }
 
-int dvrDisplayManagerSetupNamedBuffer(DvrDisplayManager* client,
-                                      const char* name, size_t size,
-                                      uint64_t usage, DvrBuffer** buffer_out) {
-  if (!client || !name || !buffer_out)
+int dvrDisplayManagerSetupGlobalBuffer(DvrDisplayManager* client,
+                                       DvrGlobalBufferKey key, size_t size,
+                                       uint64_t usage, DvrBuffer** buffer_out) {
+  if (!client || !buffer_out)
     return -EINVAL;
 
   uint64_t gralloc_usage = AHardwareBuffer_convertToGrallocUsageBits(usage);
 
   auto buffer_status =
-      client->client->SetupNamedBuffer(name, size, gralloc_usage);
+      client->client->SetupGlobalBuffer(key, size, gralloc_usage);
   if (!buffer_status) {
-    ALOGE("dvrDisplayManagerSetupPoseBuffer: Failed to setup named buffer: %s",
-          buffer_status.GetErrorMessage().c_str());
+    ALOGE(
+        "dvrDisplayManagerSetupGlobalBuffer: Failed to setup global buffer: %s",
+        buffer_status.GetErrorMessage().c_str());
     return -buffer_status.error();
   }
 
diff --git a/libs/vr/libdvr/dvr_surface.cpp b/libs/vr/libdvr/dvr_surface.cpp
index 67e2ae8..1fe9874 100644
--- a/libs/vr/libdvr/dvr_surface.cpp
+++ b/libs/vr/libdvr/dvr_surface.cpp
@@ -156,22 +156,22 @@
   return 0;
 }
 
-int dvrGetNamedBuffer(const char* name, DvrBuffer** out_buffer) {
+int dvrGetGlobalBuffer(DvrGlobalBufferKey key, DvrBuffer** out_buffer) {
   auto client = DisplayClient::Create();
   if (!client) {
-    ALOGE("dvrGetNamedBuffer: Failed to create display client!");
+    ALOGE("dvrGetGlobalBuffer: Failed to create display client!");
     return -ECOMM;
   }
 
-  if (out_buffer == nullptr || name == nullptr) {
-    ALOGE("dvrGetNamedBuffer: Invalid inputs: name=%p, out_buffer=%p.", name,
+  if (out_buffer == nullptr) {
+    ALOGE("dvrGetGlobalBuffer: Invalid inputs: key=%d, out_buffer=%p.", key,
           out_buffer);
     return -EINVAL;
   }
 
-  auto status = client->GetNamedBuffer(name);
+  auto status = client->GetGlobalBuffer(key);
   if (!status) {
-    ALOGE("dvrGetNamedBuffer: Failed to find named buffer name=%s: %s", name,
+    ALOGE("dvrGetGlobalBuffer: Failed to find named buffer key=%d: %s", key,
           status.GetErrorMessage().c_str());
     return -status.error();
   }
diff --git a/libs/vr/libdvr/include/dvr/dvr_api.h b/libs/vr/libdvr/include/dvr/dvr_api.h
index 8326a5b..ef2c975 100644
--- a/libs/vr/libdvr/include/dvr/dvr_api.h
+++ b/libs/vr/libdvr/include/dvr/dvr_api.h
@@ -33,6 +33,7 @@
 typedef struct DvrSurface DvrSurface;
 typedef uint64_t DvrSurfaceAttributeType;
 typedef int32_t DvrSurfaceAttributeKey;
+typedef int32_t DvrGlobalBufferKey;
 
 typedef struct DvrSurfaceAttributeValue DvrSurfaceAttributeValue;
 typedef struct DvrSurfaceAttribute DvrSurfaceAttribute;
@@ -42,10 +43,11 @@
 // dvr_display_manager.h
 typedef int (*DvrDisplayManagerCreatePtr)(DvrDisplayManager** client_out);
 typedef void (*DvrDisplayManagerDestroyPtr)(DvrDisplayManager* client);
-typedef int (*DvrDisplayManagerSetupNamedBufferPtr)(DvrDisplayManager* client,
-                                                    const char* name,
-                                                    size_t size, uint64_t usage,
-                                                    DvrBuffer** buffer_out);
+typedef int (*DvrDisplayManagerSetupGlobalBufferPtr)(DvrDisplayManager* client,
+                                                     DvrGlobalBufferKey key,
+                                                     size_t size,
+                                                     uint64_t usage,
+                                                     DvrBuffer** buffer_out);
 typedef int (*DvrDisplayManagerGetEventFdPtr)(DvrDisplayManager* client);
 typedef int (*DvrDisplayManagerTranslateEpollEventMaskPtr)(
     DvrDisplayManager* client, int in_events, int* out_events);
@@ -156,7 +158,8 @@
                                             size_t meta_size_bytes);
 
 // dvr_surface.h
-typedef int (*DvrGetNamedBufferPtr)(const char* name, DvrBuffer** out_buffer);
+typedef int (*DvrGetGlobalBufferPtr)(DvrGlobalBufferKey key,
+                                     DvrBuffer** out_buffer);
 typedef int (*DvrSurfaceCreatePtr)(const DvrSurfaceAttribute* attributes,
                                    size_t attribute_count,
                                    DvrSurface** surface_out);
diff --git a/libs/vr/libdvr/include/dvr/dvr_api_entries.h b/libs/vr/libdvr/include/dvr/dvr_api_entries.h
index 42c1178..30d0a65 100644
--- a/libs/vr/libdvr/include/dvr/dvr_api_entries.h
+++ b/libs/vr/libdvr/include/dvr/dvr_api_entries.h
@@ -11,7 +11,7 @@
 // Display manager client
 DVR_V1_API_ENTRY(DisplayManagerCreate);
 DVR_V1_API_ENTRY(DisplayManagerDestroy);
-DVR_V1_API_ENTRY(DisplayManagerSetupNamedBuffer);
+DVR_V1_API_ENTRY(DisplayManagerSetupGlobalBuffer);
 DVR_V1_API_ENTRY(DisplayManagerGetEventFd);
 DVR_V1_API_ENTRY(DisplayManagerTranslateEpollEventMask);
 DVR_V1_API_ENTRY(DisplayManagerGetSurfaceState);
@@ -86,7 +86,7 @@
 DVR_V1_API_ENTRY(SurfaceGetId);
 DVR_V1_API_ENTRY(SurfaceSetAttributes);
 DVR_V1_API_ENTRY(SurfaceCreateWriteBufferQueue);
-DVR_V1_API_ENTRY(GetNamedBuffer);
+DVR_V1_API_ENTRY(GetGlobalBuffer);
 
 // Pose client
 DVR_V1_API_ENTRY(PoseCreate);
diff --git a/libs/vr/libdvr/include/dvr/dvr_display_manager.h b/libs/vr/libdvr/include/dvr/dvr_display_manager.h
index b8af108..f8db182 100644
--- a/libs/vr/libdvr/include/dvr/dvr_display_manager.h
+++ b/libs/vr/libdvr/include/dvr/dvr_display_manager.h
@@ -28,9 +28,9 @@
 // Sets up a named buffer for shared memory data transfer between display
 // clients and the display manager.
 // @return 0 on success. Otherwise returns a negative error value.
-int dvrDisplayManagerSetupNamedBuffer(DvrDisplayManager* client,
-                                      const char* name, size_t size,
-                                      uint64_t usage, DvrBuffer** buffer_out);
+int dvrDisplayManagerSetupGlobalBuffer(DvrDisplayManager* client,
+                                       DvrGlobalBufferKey key, size_t size,
+                                       uint64_t usage, DvrBuffer** buffer_out);
 
 // Device metrics data type enums.
 enum {
diff --git a/libs/vr/libdvr/include/dvr/dvr_surface.h b/libs/vr/libdvr/include/dvr/dvr_surface.h
index 361488e..e3ab41b 100644
--- a/libs/vr/libdvr/include/dvr/dvr_surface.h
+++ b/libs/vr/libdvr/include/dvr/dvr_surface.h
@@ -6,16 +6,13 @@
 #include <stdint.h>
 #include <sys/cdefs.h>
 
+#include <dvr/dvr_api.h>
 #include <dvr/dvr_buffer.h>
 #include <dvr/dvr_buffer_queue.h>
 #include <dvr/dvr_display_types.h>
 
 __BEGIN_DECLS
 
-typedef struct DvrBuffer DvrBuffer;
-typedef struct DvrSurface DvrSurface;
-typedef struct DvrWriteBufferQueue DvrWriteBufferQueue;
-
 // Attribute types. The values are one-hot encoded to support singluar types or
 // masks of supported types.
 enum {
@@ -82,9 +79,9 @@
                                      size_t capacity,
                                      DvrWriteBufferQueue** queue_out);
 
-// Get a named buffer from the display service.
+// Get a global buffer from the display service.
 // @return 0 on success. Otherwise returns a negative error value.
-int dvrGetNamedBuffer(const char* name, DvrBuffer** out_buffer);
+int dvrGetGlobalBuffer(DvrGlobalBufferKey key, DvrBuffer** out_buffer);
 
 __END_DECLS
 
diff --git a/libs/vr/libdvr/tests/dvr_named_buffer-test.cpp b/libs/vr/libdvr/tests/dvr_named_buffer-test.cpp
index e65f6d5..336f11f 100644
--- a/libs/vr/libdvr/tests/dvr_named_buffer-test.cpp
+++ b/libs/vr/libdvr/tests/dvr_named_buffer-test.cpp
@@ -29,16 +29,16 @@
 };
 
 TEST_F(DvrNamedBufferTest, TestNamedBuffersSameName) {
-  const char* buffer_name = "same_name";
+  const DvrGlobalBufferKey buffer_key = 101;
   DvrBuffer* buffer1 = nullptr;
   int ret1 =
-      dvrDisplayManagerSetupNamedBuffer(client_, buffer_name, 10, 0, &buffer1);
+      dvrDisplayManagerSetupGlobalBuffer(client_, buffer_key, 10, 0, &buffer1);
   ASSERT_EQ(0, ret1);
   ASSERT_NE(nullptr, buffer1);
 
   DvrBuffer* buffer2 = nullptr;
   int ret2 =
-      dvrDisplayManagerSetupNamedBuffer(client_, buffer_name, 10, 0, &buffer2);
+      dvrDisplayManagerSetupGlobalBuffer(client_, buffer_key, 10, 0, &buffer2);
   ASSERT_EQ(0, ret1);
   ASSERT_NE(nullptr, buffer2);
 
@@ -71,7 +71,7 @@
   dvrBufferDestroy(buffer2);
 
   DvrBuffer* buffer3 = nullptr;
-  int e3 = dvrGetNamedBuffer(buffer_name, &buffer3);
+  int e3 = dvrGetGlobalBuffer(buffer_key, &buffer3);
   ASSERT_NE(nullptr, buffer3);
   ASSERT_EQ(0, e3);
 
@@ -96,37 +96,37 @@
 }
 
 TEST_F(DvrNamedBufferTest, TestMultipleNamedBuffers) {
-  const char* buffer_name1 = "test1";
-  const char* buffer_name2 = "test2";
+  const DvrGlobalBufferKey buffer_key1 = 102;
+  const DvrGlobalBufferKey buffer_key2 = 103;
   DvrBuffer* setup_buffer1 = nullptr;
-  int ret1 = dvrDisplayManagerSetupNamedBuffer(client_, buffer_name1, 10, 0,
-                                               &setup_buffer1);
+  int ret1 = dvrDisplayManagerSetupGlobalBuffer(client_, buffer_key1, 10, 0,
+                                                &setup_buffer1);
   ASSERT_EQ(0, ret1);
   ASSERT_NE(nullptr, setup_buffer1);
   dvrBufferDestroy(setup_buffer1);
 
   DvrBuffer* setup_buffer2 = nullptr;
-  int ret2 = dvrDisplayManagerSetupNamedBuffer(client_, buffer_name2, 10, 0,
-                                               &setup_buffer2);
+  int ret2 = dvrDisplayManagerSetupGlobalBuffer(client_, buffer_key2, 10, 0,
+                                                &setup_buffer2);
   ASSERT_EQ(0, ret2);
   ASSERT_NE(nullptr, setup_buffer2);
   dvrBufferDestroy(setup_buffer2);
 
   DvrBuffer* buffer1 = nullptr;
-  int e1 = dvrGetNamedBuffer(buffer_name1, &buffer1);
+  int e1 = dvrGetGlobalBuffer(buffer_key1, &buffer1);
   ASSERT_NE(nullptr, buffer1);
   ASSERT_EQ(0, e1);
   dvrBufferDestroy(buffer1);
 
   DvrBuffer* buffer2 = nullptr;
-  int e2 = dvrGetNamedBuffer(buffer_name2, &buffer2);
+  int e2 = dvrGetGlobalBuffer(buffer_key2, &buffer2);
   ASSERT_NE(nullptr, buffer2);
   ASSERT_EQ(0, e2);
   dvrBufferDestroy(buffer2);
 }
 
 TEST_F(DvrNamedBufferTest, TestNamedBufferUsage) {
-  const char* buffer_name = "buffer_usage";
+  const DvrGlobalBufferKey buffer_key = 100;
 
   // Set usage to AHARDWAREBUFFER_USAGE_VIDEO_ENCODE. We use this because
   // internally AHARDWAREBUFFER_USAGE_VIDEO_ENCODE is converted to
@@ -136,8 +136,8 @@
   const uint64_t usage = AHARDWAREBUFFER_USAGE_VIDEO_ENCODE;
 
   DvrBuffer* setup_buffer = nullptr;
-  int e1 = dvrDisplayManagerSetupNamedBuffer(client_, buffer_name, 10, usage,
-                                             &setup_buffer);
+  int e1 = dvrDisplayManagerSetupGlobalBuffer(client_, buffer_key, 10, usage,
+                                              &setup_buffer);
   ASSERT_NE(nullptr, setup_buffer);
   ASSERT_EQ(0, e1);
 
diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index de26a74..d37031f 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -61,6 +61,10 @@
     "libfmq",
 ]
 
+headerLibraries = [
+    "libdvr_headers"
+]
+
 cc_library_static {
     srcs: sourceFiles,
     export_include_dirs: includeFiles,
@@ -73,6 +77,7 @@
         "-DEGL_EGLEXT_PROTOTYPES",
     ],
     shared_libs: sharedLibraries,
+    header_libs: headerLibraries,
     whole_static_libs: staticLibraries,
     name: "libvrflinger",
 }
diff --git a/libs/vr/libvrflinger/display_manager_service.cpp b/libs/vr/libvrflinger/display_manager_service.cpp
index dfb0231..7b5aa79 100644
--- a/libs/vr/libvrflinger/display_manager_service.cpp
+++ b/libs/vr/libvrflinger/display_manager_service.cpp
@@ -88,9 +88,9 @@
           *this, &DisplayManagerService::OnGetSurfaceQueue, message);
       return {};
 
-    case DisplayManagerProtocol::SetupNamedBuffer::Opcode:
-      DispatchRemoteMethod<DisplayManagerProtocol::SetupNamedBuffer>(
-          *this, &DisplayManagerService::OnSetupNamedBuffer, message);
+    case DisplayManagerProtocol::SetupGlobalBuffer::Opcode:
+      DispatchRemoteMethod<DisplayManagerProtocol::SetupGlobalBuffer>(
+          *this, &DisplayManagerService::OnSetupGlobalBuffer, message);
       return {};
 
     case DisplayManagerProtocol::GetConfigurationData::Opcode:
@@ -145,20 +145,20 @@
 }
 
 pdx::Status<BorrowedNativeBufferHandle>
-DisplayManagerService::OnSetupNamedBuffer(pdx::Message& message,
-                                          const std::string& name, size_t size,
-                                          uint64_t usage) {
+DisplayManagerService::OnSetupGlobalBuffer(pdx::Message& message,
+                                           DvrGlobalBufferKey key, size_t size,
+                                           uint64_t usage) {
   const int user_id = message.GetEffectiveUserId();
   const bool trusted = user_id == AID_ROOT || IsTrustedUid(user_id);
 
   if (!trusted) {
     ALOGE(
-        "DisplayService::SetupNamedBuffer: Named buffers may only be created "
+        "DisplayService::SetupGlobalBuffer: Global buffers may only be created "
         "by trusted UIDs: user_id=%d",
         user_id);
     return ErrorStatus(EPERM);
   }
-  return display_service_->SetupNamedBuffer(name, size, usage);
+  return display_service_->SetupGlobalBuffer(key, size, usage);
 }
 
 pdx::Status<std::string> DisplayManagerService::OnGetConfigurationData(
diff --git a/libs/vr/libvrflinger/display_manager_service.h b/libs/vr/libvrflinger/display_manager_service.h
index e23b991..4a08405 100644
--- a/libs/vr/libvrflinger/display_manager_service.h
+++ b/libs/vr/libvrflinger/display_manager_service.h
@@ -56,8 +56,8 @@
   pdx::Status<pdx::LocalChannelHandle> OnGetSurfaceQueue(pdx::Message& message,
                                                          int surface_id,
                                                          int queue_id);
-  pdx::Status<BorrowedNativeBufferHandle> OnSetupNamedBuffer(
-      pdx::Message& message, const std::string& name, size_t size,
+  pdx::Status<BorrowedNativeBufferHandle> OnSetupGlobalBuffer(
+      pdx::Message& message, DvrGlobalBufferKey key, size_t size,
       uint64_t usage);
   pdx::Status<std::string> OnGetConfigurationData(
       pdx::Message& message, display::ConfigFileType config_type);
diff --git a/libs/vr/libvrflinger/display_service.cpp b/libs/vr/libvrflinger/display_service.cpp
index 47efa76..4cc5f02 100644
--- a/libs/vr/libvrflinger/display_service.cpp
+++ b/libs/vr/libvrflinger/display_service.cpp
@@ -65,9 +65,9 @@
           *this, &DisplayService::OnCreateSurface, message);
       return {};
 
-    case DisplayProtocol::GetNamedBuffer::Opcode:
-      DispatchRemoteMethod<DisplayProtocol::GetNamedBuffer>(
-          *this, &DisplayService::OnGetNamedBuffer, message);
+    case DisplayProtocol::GetGlobalBuffer::Opcode:
+      DispatchRemoteMethod<DisplayProtocol::GetGlobalBuffer>(
+          *this, &DisplayService::OnGetGlobalBuffer, message);
       return {};
 
     case DisplayProtocol::IsVrAppRunning::Opcode:
@@ -155,12 +155,12 @@
   }
 }
 
-pdx::Status<BorrowedNativeBufferHandle> DisplayService::OnGetNamedBuffer(
-    pdx::Message& /* message */, const std::string& name) {
-  ALOGD_IF(TRACE, "displayService::OnGetNamedBuffer: name=%s", name.c_str());
-  auto named_buffer = named_buffers_.find(name);
-  if (named_buffer != named_buffers_.end())
-    return {BorrowedNativeBufferHandle(*named_buffer->second, 0)};
+pdx::Status<BorrowedNativeBufferHandle> DisplayService::OnGetGlobalBuffer(
+    pdx::Message& /* message */, DvrGlobalBufferKey key) {
+  ALOGD_IF(TRACE, "DisplayService::OnGetGlobalBuffer: key=%d", key);
+  auto global_buffer = global_buffers_.find(key);
+  if (global_buffer != global_buffers_.end())
+    return {BorrowedNativeBufferHandle(*global_buffer->second, 0)};
   else
     return pdx::ErrorStatus(EINVAL);
 }
@@ -221,18 +221,18 @@
   hardware_composer_.SetDisplaySurfaces(std::move(visible_surfaces));
 }
 
-pdx::Status<BorrowedNativeBufferHandle> DisplayService::SetupNamedBuffer(
-    const std::string& name, size_t size, uint64_t usage) {
-  auto named_buffer = named_buffers_.find(name);
-  if (named_buffer == named_buffers_.end()) {
+pdx::Status<BorrowedNativeBufferHandle> DisplayService::SetupGlobalBuffer(
+    DvrGlobalBufferKey key, size_t size, uint64_t usage) {
+  auto global_buffer = global_buffers_.find(key);
+  if (global_buffer == global_buffers_.end()) {
     auto ion_buffer = std::make_unique<IonBuffer>(static_cast<int>(size), 1,
                                                   HAL_PIXEL_FORMAT_BLOB, usage);
-    named_buffer =
-        named_buffers_.insert(std::make_pair(name, std::move(ion_buffer)))
+    global_buffer =
+        global_buffers_.insert(std::make_pair(key, std::move(ion_buffer)))
             .first;
   }
 
-  return {BorrowedNativeBufferHandle(*named_buffer->second, 0)};
+  return {BorrowedNativeBufferHandle(*global_buffer->second, 0)};
 }
 
 void DisplayService::OnHardwareComposerRefresh() {
diff --git a/libs/vr/libvrflinger/display_service.h b/libs/vr/libvrflinger/display_service.h
index bb4eeef..77e45a4 100644
--- a/libs/vr/libvrflinger/display_service.h
+++ b/libs/vr/libvrflinger/display_service.h
@@ -1,6 +1,7 @@
 #ifndef ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
 #define ANDROID_DVR_SERVICES_DISPLAYD_DISPLAY_SERVICE_H_
 
+#include <dvr/dvr_api.h>
 #include <pdx/service.h>
 #include <pdx/status.h>
 #include <private/dvr/buffer_hub_client.h>
@@ -40,8 +41,8 @@
   // any change to client/manager attributes that affect visibility or z order.
   void UpdateActiveDisplaySurfaces();
 
-  pdx::Status<BorrowedNativeBufferHandle> SetupNamedBuffer(
-      const std::string& name, size_t size, uint64_t usage);
+  pdx::Status<BorrowedNativeBufferHandle> SetupGlobalBuffer(
+      DvrGlobalBufferKey key, size_t size, uint64_t usage);
 
   template <class A>
   void ForEachDisplaySurface(SurfaceType surface_type, A action) const {
@@ -82,8 +83,8 @@
   DisplayService(android::Hwc2::Composer* hidl,
                  RequestDisplayCallback request_display_callback);
 
-  pdx::Status<BorrowedNativeBufferHandle> OnGetNamedBuffer(
-      pdx::Message& message, const std::string& name);
+  pdx::Status<BorrowedNativeBufferHandle> OnGetGlobalBuffer(
+      pdx::Message& message, DvrGlobalBufferKey key);
   pdx::Status<display::Metrics> OnGetMetrics(pdx::Message& message);
   pdx::Status<display::SurfaceInfo> OnCreateSurface(
       pdx::Message& message, const display::SurfaceAttributes& attributes);
@@ -113,7 +114,8 @@
   EpollEventDispatcher dispatcher_;
   DisplayConfigurationUpdateNotifier update_notifier_;
 
-  std::unordered_map<std::string, std::unique_ptr<IonBuffer>> named_buffers_;
+  std::unordered_map<DvrGlobalBufferKey, std::unique_ptr<IonBuffer>>
+      global_buffers_;
 
   DisplayService(const DisplayService&) = delete;
   void operator=(const DisplayService&) = delete;