From f03decfc251eb18cc4b35b7ac6a5c92833b05a93 Mon Sep 17 00:00:00 2001
From: Tomasz Biernacik <tomasz.biernacik@intel.com>
Date: Mon, 28 Apr 2025 20:31:02 +0000
Subject: [PATCH] performance: disable coherency for buffers on PTL

Related-To: NEO-9421

Signed-off-by: Tomasz Biernacik <tomasz.biernacik@intel.com>
---
 .../source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl   | 5 +++++
 .../test/unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/shared/source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl b/shared/source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl
index 0c68776f45..80f181a579 100644
--- a/shared/source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl
+++ b/shared/source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl
@@ -34,4 +34,9 @@ bool ProductHelperHw<gfxProduct>::isDirectSubmissionSupported(ReleaseHelper *rel
     return true;
 }
 
+template <>
+bool ProductHelperHw<gfxProduct>::isCachingOnCpuAvailable() const {
+    return false;
+}
+
 } // namespace NEO
diff --git a/shared/test/unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp b/shared/test/unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp
index e070be3dec..2d3a88a6db 100644
--- a/shared/test/unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp
+++ b/shared/test/unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp
@@ -89,3 +89,7 @@ PTLTEST_F(PtlProductHelper, givenExternalHostPtrWhenMitigateDcFlushThenOverrideC
         }
     }
 }
+
+PTLTEST_F(PtlProductHelper, givenProductHelperWhenCallIsCachingOnCpuAvailableThenFalseIsReturned) {
+    EXPECT_FALSE(productHelper->isCachingOnCpuAvailable());
+}