From 1d45562fe3aa12f59d72a37249b6bdfe5af6c052 Mon Sep 17 00:00:00 2001
From: Kamil Kopryk <kamil.kopryk@intel.com>
Date: Wed, 6 Aug 2025 12:40:53 +0000
Subject: [PATCH] fix: flush l3 if print buffer is present

Related-To: NEO-13163
Signed-off-by: Kamil Kopryk <kamil.kopryk@intel.com>
---
 .../command_queue/hardware_interface_xehp_and_later.inl      | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/opencl/source/command_queue/hardware_interface_xehp_and_later.inl b/opencl/source/command_queue/hardware_interface_xehp_and_later.inl
index ef06b2044c..60b24285e0 100644
--- a/opencl/source/command_queue/hardware_interface_xehp_and_later.inl
+++ b/opencl/source/command_queue/hardware_interface_xehp_and_later.inl
@@ -106,7 +106,8 @@ inline void HardwareInterface<GfxFamily>::programWalker(
 
         if constexpr (heaplessModeEnabled) {
             auto &productHelper = rootDeviceEnvironment.getHelper<ProductHelper>();
-            bool flushL3AfterPostSyncForHostUsm = kernelSystemAllocation || kernel.hasPrintfOutput();
+            auto containsPrintBuffer = kernel.hasPrintfOutput();
+            bool flushL3AfterPostSyncForHostUsm = kernelSystemAllocation || containsPrintBuffer;
             bool flushL3AfterPostSyncForExternalAllocation = kernel.isUsingSharedObjArgs();
 
             if (debugManager.flags.RedirectFlushL3HostUsmToExternal.get() && flushL3AfterPostSyncForHostUsm) {
@@ -114,7 +115,7 @@ inline void HardwareInterface<GfxFamily>::programWalker(
                 flushL3AfterPostSyncForExternalAllocation = true;
             }
 
-            if (walkerArgs.event != nullptr || walkerArgs.blocking) {
+            if (walkerArgs.event != nullptr || walkerArgs.blocking || containsPrintBuffer) {
                 GpgpuWalkerHelper<GfxFamily>::template setupTimestampPacketFlushL3<WalkerType>(&walkerCmd, productHelper, flushL3AfterPostSyncForHostUsm, flushL3AfterPostSyncForExternalAllocation);
             }
         }