diff --git a/external/drm/xe_drm.h b/external/drm/xe_drm.h
index b6fbe49..e3c4de2 100644
--- a/external/drm/xe_drm.h
+++ b/external/drm/xe_drm.h
@@ -512,7 +512,9 @@ struct drm_xe_query_gt_list {
  *    containing the following in mask:
  *    ``DSS_COMPUTE    ff ff ff ff 00 00 00 00``
  *    means 32 DSS are available for compute.
- *  - %DRM_XE_TOPO_L3_BANK - To query the mask of enabled L3 banks
+ *  - %DRM_XE_TOPO_L3_BANK - To query the mask of enabled L3 banks.  This type
+ *    may be omitted if the driver is unable to query the mask from the
+ *    hardware.
  *  - %DRM_XE_TOPO_EU_PER_DSS - To query the mask of Execution Units (EU)
  *    available per Dual Sub Slices (DSS). For example a query response
  *    containing the following in mask:
@@ -1483,6 +1485,9 @@ struct drm_xe_oa_unit {
 	/** @capabilities: OA capabilities bit-mask */
 	__u64 capabilities;
 #define DRM_XE_OA_CAPS_BASE		(1 << 0)
+#define DRM_XE_OA_CAPS_SYNCS		(1 << 1)
+#define DRM_XE_OA_CAPS_OA_BUFFER_SIZE	(1 << 2)
+#define DRM_XE_OA_CAPS_WAIT_NUM_REPORTS  ( 1 << 3 )
 
 	/** @oa_timestamp_freq: OA timestamp freq */
 	__u64 oa_timestamp_freq;
@@ -1632,6 +1637,36 @@ enum drm_xe_oa_property_id {
 	 * to be disabled for the stream exec queue.
 	 */
 	DRM_XE_OA_PROPERTY_NO_PREEMPT,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_NUM_SYNCS: Number of syncs in the sync array
+	 * specified in @DRM_XE_OA_PROPERTY_SYNCS
+	 */
+	DRM_XE_OA_PROPERTY_NUM_SYNCS,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_SYNCS: Pointer to struct @drm_xe_sync array
+	 * with array size specified via @DRM_XE_OA_PROPERTY_NUM_SYNCS. OA
+	 * configuration will wait till input fences signal. Output fences
+	 * will signal after the new OA configuration takes effect. For
+	 * @DRM_XE_SYNC_TYPE_USER_FENCE, @addr is a user pointer, similar
+	 * to the VM bind case.
+	 */
+	DRM_XE_OA_PROPERTY_SYNCS,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_OA_BUFFER_SIZE: Size of OA buffer to be
+	 * allocated by the driver in bytes. Supported sizes are powers of
+	 * 2 from 128 KiB to 128 MiB. When not specified, a 16 MiB OA
+	 * buffer is allocated by default.
+	 */
+	DRM_XE_OA_PROPERTY_OA_BUFFER_SIZE,
+
+	/**
+	 * @DRM_XE_OA_PROPERTY_WAIT_NUM_REPORTS: Number of reports to wait
+	 * for before unblocking poll or read
+	 */
+    DRM_XE_OA_PROPERTY_WAIT_NUM_REPORTS,
 };
 
 /**
diff --git a/inc/common/instrumentation/api/metrics_discovery_api.h b/inc/common/instrumentation/api/metrics_discovery_api.h
index fbdf961..969ee65 100644
--- a/inc/common/instrumentation/api/metrics_discovery_api.h
+++ b/inc/common/instrumentation/api/metrics_discovery_api.h
@@ -37,7 +37,7 @@ SPDX-License-Identifier: MIT
 //////////////////////////////////////////////////////////////////////////////////
 // API build number:
 //////////////////////////////////////////////////////////////////////////////////
-#define MD_API_BUILD_NUMBER_CURRENT 179
+#define MD_API_BUILD_NUMBER_CURRENT 180
 
 namespace MetricsDiscovery
 {
diff --git a/instrumentation/metrics_discovery/linux/inc/md_driver_ifc_linux_xe.h b/instrumentation/metrics_discovery/linux/inc/md_driver_ifc_linux_xe.h
index c6af8c9..6ca087f 100644
--- a/instrumentation/metrics_discovery/linux/inc/md_driver_ifc_linux_xe.h
+++ b/instrumentation/metrics_discovery/linux/inc/md_driver_ifc_linux_xe.h
@@ -25,6 +25,20 @@ using namespace MetricsDiscovery;
 
 namespace MetricsDiscoveryInternal
 {
+    //////////////////////////////////////////////////////////////////////////////
+    //
+    // Struct:
+    //     SXeObservationCapabilities
+    //
+    // Description:
+    //     A structure holding information about Xe observation features support in kernel.
+    //
+    //////////////////////////////////////////////////////////////////////////////
+    typedef struct SXeObservationCapabilities
+    {
+        bool IsOaNotifyNumReportsSupported;
+    } TXeObservationCapabilities;
+
     //////////////////////////////////////////////////////////////////////////////
     //
     // Class:
@@ -104,4 +118,6 @@ namespace MetricsDiscoveryInternal
         virtual TCompletionCode GetCopyEngineMask( CMetricsDevice& metricsDevice, uint64_t& copyEngineMask );
     };
 
+    TXeObservationCapabilities m_xeObservationCapabilities; // Information about Xe observation features supported in current kernel
+
 } // namespace MetricsDiscoveryInternal
diff --git a/instrumentation/metrics_discovery/linux/md_driver_ifc_linux_xe.cpp b/instrumentation/metrics_discovery/linux/md_driver_ifc_linux_xe.cpp
index b665e05..18ecaec 100644
--- a/instrumentation/metrics_discovery/linux/md_driver_ifc_linux_xe.cpp
+++ b/instrumentation/metrics_discovery/linux/md_driver_ifc_linux_xe.cpp
@@ -386,6 +386,11 @@ namespace MetricsDiscoveryInternal
                 engines.emplace_back( oaUnit.oa_unit_id, oaUnit.eci[j] );
             }
 
+            if( oaUnit.oa_unit_type == DRM_XE_OA_UNIT_TYPE_OAG )
+            {
+                m_xeObservationCapabilities.IsOaNotifyNumReportsSupported = oaUnit.capabilities & DRM_XE_OA_CAPS_WAIT_NUM_REPORTS;
+            }
+
             oaUnitOffset += sizeof( oaUnit ) + oaUnit.num_engines * sizeof( oaUnit.eci[0] );
         }
 
@@ -533,6 +538,16 @@ namespace MetricsDiscoveryInternal
         addProperty( DRM_XE_OA_PROPERTY_OA_FORMAT, oaReportType );
         addProperty( DRM_XE_OA_PROPERTY_OA_PERIOD_EXPONENT, timerPeriodExponent );
 
+        // Half-full buffer interrupt.
+        if( m_xeObservationCapabilities.IsOaNotifyNumReportsSupported )
+        {
+            const uint32_t halfSizeInReports = bufferSize / 2 / oaReportSize;
+
+            addProperty( DRM_XE_OA_PROPERTY_WAIT_NUM_REPORTS, halfSizeInReports );
+
+            MD_LOG_A( m_adapterId, LOG_DEBUG, "Number of reports KMD needs to wait before unblocking is %u", halfSizeInReports );
+        }
+
         param.observation_type = DRM_XE_OBSERVATION_TYPE_OA;
         param.observation_op   = DRM_XE_OBSERVATION_OP_STREAM_OPEN;
         param.param            = reinterpret_cast<uint64_t>( properties );