[UR][CUDA][NativeCPU] Mark MAX_READ_WRITE_IMAGE_ARGS as optional query

unified-runtime/include/unified-runtime/ur_api.h

@@ -2142,8 +2142,11 @@ typedef enum ur_device_info_t {
   /// [uint32_t] max number of image objects arguments of a kernel declared
   /// with the write_only qualifier
   UR_DEVICE_INFO_MAX_WRITE_IMAGE_ARGS = 31,
-  /// [uint32_t] max number of image objects arguments of a kernel declared
-  /// with the read_write qualifier
+  /// [uint32_t][optional-query] max number of image objects arguments of a
+  /// kernel declared with the read_write qualifier. This query is optional
+  /// because not all adapters support read-write image arguments. For
+  /// example, CUDA has separate texture (read-only) and surface
+  /// (write-only) objects, but no combined read-write image type.
   UR_DEVICE_INFO_MAX_READ_WRITE_IMAGE_ARGS = 32,
   /// [size_t] max width of Image2D object
   UR_DEVICE_INFO_IMAGE2D_MAX_WIDTH = 33,

unified-runtime/scripts/core/device.yml

@@ -265,7 +265,7 @@ etors:
     - name: MAX_WRITE_IMAGE_ARGS
       desc: "[uint32_t] max number of image objects arguments of a kernel declared with the write_only qualifier"
     - name: MAX_READ_WRITE_IMAGE_ARGS
-      desc: "[uint32_t] max number of image objects arguments of a kernel declared with the read_write qualifier"
+      desc: "[uint32_t][optional-query] max number of image objects arguments of a kernel declared with the read_write qualifier. This query is optional because not all adapters support read-write image arguments. For example, CUDA has separate texture (read-only) and surface (write-only) objects, but no combined read-write image type."
     - name: IMAGE2D_MAX_WIDTH
       desc: "[size_t] max width of Image2D object"
     - name: IMAGE2D_MAX_HEIGHT

unified-runtime/source/adapters/native_cpu/device.cpp

@@ -367,6 +367,7 @@ UR_APIEXPORT ur_result_t UR_APICALL urDeviceGetInfo(ur_device_handle_t hDevice,
   case UR_DEVICE_INFO_GLOBAL_MEM_FREE:
   case UR_DEVICE_INFO_MAX_MEMORY_BANDWIDTH:
   case UR_DEVICE_INFO_MAX_REGISTERS_PER_WORK_GROUP:
+  case UR_DEVICE_INFO_MAX_READ_WRITE_IMAGE_ARGS:
   case UR_DEVICE_INFO_IP_VERSION:
   case UR_DEVICE_INFO_CURRENT_CLOCK_THROTTLE_REASONS:
   case UR_DEVICE_INFO_FAN_SPEED:

unified-runtime/test/conformance/device/urDeviceGetInfo.cpp

@@ -559,9 +559,10 @@ TEST_P(urDeviceGetInfoTest, SuccessMaxWriteImageArgs) {
                              property_value);
 }
 
+// Optional query: CUDA has separate texture (read-only) and surface
+// (write-only) objects but no combined read-write image type.
+// NativeCPU has no image support.
 TEST_P(urDeviceGetInfoTest, SuccessMaxReadWriteImageArgs) {
-  UUR_KNOWN_FAILURE_ON(uur::CUDA{}, uur::NativeCPU{});
-
   size_t property_size = 0;
   const ur_device_info_t property_name =
       UR_DEVICE_INFO_MAX_READ_WRITE_IMAGE_ARGS;