Address feedback

* Remove unnecesary env variable setting
* Check support of the feature on device
* Check sub-feature support before usage at urCommandBufferUpdateKernelLaunchExp
* Remove redundant code

Author: againull

source/adapters/level_zero/command_buffer.cpp

@@ -95,7 +95,6 @@ ur_exp_command_buffer_handle_t_::ur_exp_command_buffer_handle_t_(
       ZeCommandListDesc(ZeDesc), ZeFencesList(), QueueProperties(),
       SyncPoints(), NextSyncPoint(0),
       IsUpdatable(Desc ? Desc->isUpdatable : false) {
-  (void)Desc;
   urContextRetain(Context);
   urDeviceRetain(Device);
 }
@@ -1085,6 +1084,9 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferUpdateKernelLaunchExp(
   auto CommandBuffer = Command->CommandBuffer;
   uint32_t Dim = CommandDesc->newWorkDim;
   const void *NextDesc = nullptr;
+  auto SupportedFeatures =
+      Command->CommandBuffer->Device->ZeDeviceMutableCmdListsProperties
+          ->mutableCommandFlags;
 
   // We need the created descriptors to live till the point when
   // zexCommandListUpdateMutableCommandsExp is called at the end of the
@@ -1100,6 +1102,9 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferUpdateKernelLaunchExp(
 
   // Check if new global offset is provided.
   size_t *NewGlobalWorkOffset = CommandDesc->pNewGlobalWorkOffset;
+  UR_ASSERT(!NewGlobalWorkOffset ||
+                (SupportedFeatures & ZE_MUTABLE_COMMAND_EXP_FLAG_GLOBAL_OFFSET),
+            UR_RESULT_ERROR_UNSUPPORTED_FEATURE);
   if (NewGlobalWorkOffset && Dim > 0) {
     if (!CommandBuffer->Context->getPlatform()
              ->ZeDriverGlobalOffsetExtensionFound) {
@@ -1119,6 +1124,9 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferUpdateKernelLaunchExp(
 
   // Check if new group size is provided.
   size_t *NewLocalWorkSize = CommandDesc->pNewLocalWorkSize;
+  UR_ASSERT(!NewLocalWorkSize ||
+                (SupportedFeatures & ZE_MUTABLE_COMMAND_EXP_FLAG_GROUP_SIZE),
+            UR_RESULT_ERROR_UNSUPPORTED_FEATURE);
   if (NewLocalWorkSize && Dim > 0) {
     auto MutableGroupSizeDesc =
         std::make_unique<ZeStruct<ze_mutable_group_size_exp_desc_t>>();
@@ -1133,6 +1141,12 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferUpdateKernelLaunchExp(
 
   // Check if new global size is provided and we need to update group count.
   size_t *NewGlobalWorkSize = CommandDesc->pNewGlobalWorkSize;
+  UR_ASSERT(!NewGlobalWorkSize ||
+                (SupportedFeatures & ZE_MUTABLE_COMMAND_EXP_FLAG_GROUP_COUNT),
+            UR_RESULT_ERROR_UNSUPPORTED_FEATURE);
+  UR_ASSERT(!(NewGlobalWorkSize && !NewLocalWorkSize) ||
+                (SupportedFeatures & ZE_MUTABLE_COMMAND_EXP_FLAG_GROUP_SIZE),
+            UR_RESULT_ERROR_UNSUPPORTED_FEATURE);
   if (NewGlobalWorkSize && Dim > 0) {
     ze_group_count_t ZeThreadGroupDimensions{1, 1, 1};
     uint32_t WG[3];
@@ -1164,6 +1178,12 @@ UR_APIEXPORT ur_result_t UR_APICALL urCommandBufferUpdateKernelLaunchExp(
     }
   }
 
+  UR_ASSERT(
+      (!CommandDesc->numNewMemObjArgs && !CommandDesc->numNewPointerArgs &&
+       !CommandDesc->numNewValueArgs) ||
+          (SupportedFeatures & ZE_MUTABLE_COMMAND_EXP_FLAG_KERNEL_ARGUMENTS),
+      UR_RESULT_ERROR_UNSUPPORTED_FEATURE);
+
   // Check if new memory object arguments are provided.
   for (uint32_t NewMemObjArgNum = CommandDesc->numNewMemObjArgs;
        NewMemObjArgNum-- > 0;) {

source/adapters/level_zero/common.cpp

@@ -174,6 +174,11 @@ template <> ze_structure_type_t getZeStructureType<ze_command_list_desc_t>() {
   return ZE_STRUCTURE_TYPE_COMMAND_LIST_DESC;
 }
 template <>
+ze_structure_type_t
+getZeStructureType<ze_mutable_command_list_exp_properties_t>() {
+  return ZE_STRUCTURE_TYPE_MUTABLE_COMMAND_LIST_EXP_PROPERTIES;
+}
+template <>
 ze_structure_type_t getZeStructureType<ze_mutable_command_list_exp_desc_t>() {
   return ZE_STRUCTURE_TYPE_MUTABLE_COMMAND_LIST_EXP_DESC;
 }

source/adapters/level_zero/device.cpp

@@ -917,8 +917,22 @@ UR_APIEXPORT ur_result_t UR_APICALL urDeviceGetInfo(
   }
   case UR_DEVICE_INFO_COMMAND_BUFFER_SUPPORT_EXP:
     return ReturnValue(true);
-  case UR_DEVICE_INFO_COMMAND_BUFFER_UPDATE_SUPPORT_EXP:
-    return ReturnValue(Device->Platform->ZeMutableCmdListExt.Supported);
+  case UR_DEVICE_INFO_COMMAND_BUFFER_UPDATE_SUPPORT_EXP: {
+    // TODO: Level Zero API allows to check support for all sub-features:
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_KERNEL_ARGUMENTS,
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_GROUP_COUNT,
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_GROUP_SIZE,
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_GLOBAL_OFFSET,
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_SIGNAL_EVENT,
+    // ZE_MUTABLE_COMMAND_EXP_FLAG_WAIT_EVENTS
+    // but UR has only one property to check the mutable command lists feature
+    // support. For now return true if kernel arguments can be updated.
+    auto KernelArgUpdateSupport =
+        Device->ZeDeviceMutableCmdListsProperties->mutableCommandFlags &
+        ZE_MUTABLE_COMMAND_EXP_FLAG_KERNEL_ARGUMENTS;
+    return ReturnValue(KernelArgUpdateSupport &&
+                       Device->Platform->ZeMutableCmdListExt.Supported);
+  }
   case UR_DEVICE_INFO_BINDLESS_IMAGES_SUPPORT_EXP:
     return ReturnValue(true);
   case UR_DEVICE_INFO_BINDLESS_IMAGES_SHARED_USM_SUPPORT_EXP:
@@ -1129,6 +1143,15 @@ ur_result_t ur_device_handle_t_::initialize(int SubSubDeviceOrdinal,
                         (ZeDevice, &Count, &Properties));
       };
 
+  ZeDeviceMutableCmdListsProperties.Compute =
+      [ZeDevice](
+          ZeStruct<ze_mutable_command_list_exp_properties_t> &Properties) {
+        ze_device_properties_t P;
+        P.stype = ZE_STRUCTURE_TYPE_DEVICE_PROPERTIES;
+        P.pNext = &Properties;
+        ZE_CALL_NOCHECK(zeDeviceGetProperties, (ZeDevice, &P));
+      };
+
   ImmCommandListUsed = this->useImmediateCommandLists();
 
   uint32_t numQueueGroups = 0;

source/adapters/level_zero/device.hpp

@@ -192,4 +192,6 @@ struct ur_device_handle_t_ : _ur_object {
   ZeCache<ZeStruct<ze_device_cache_properties_t>> ZeDeviceCacheProperties;
   ZeCache<ZeStruct<ze_device_ip_version_ext_t>> ZeDeviceIpVersionExt;
   ZeCache<struct ze_global_memsize> ZeGlobalMemSize;
+  ZeCache<ZeStruct<ze_mutable_command_list_exp_properties_t>>
+      ZeDeviceMutableCmdListsProperties;
 };

test/conformance/exp_command_buffer/fixtures.h

@@ -113,9 +113,7 @@ struct urUpdatableCommandBufferExpExecutionTest
         }
 
         // Currently level zero driver doesn't support updating execution range.
-        // Also disable immediate command lists because there is synchronization issue causing test failures.
         if (backend == UR_PLATFORM_BACKEND_LEVEL_ZERO) {
-            setenv("UR_L0_USE_IMMEDIATE_COMMANDLISTS", "0", 0);
             updatable_execution_range_support = false;
         }