From 9dfa9f1cbb2be3325a6e2887dffe6ca514a74164 Mon Sep 17 00:00:00 2001
From: Szymon Morek <szymon.morek@intel.com>
Date: Wed, 17 Sep 2025 12:19:51 +0000
Subject: [PATCH] performance: remove TLB invalidations on PTL/Windows

Signed-off-by: Szymon Morek <szymon.morek@intel.com>
---
 shared/source/xe3_core/linux/product_helper_ptl.cpp         | 5 -----
 .../source/xe3_core/ptl/os_agnostic_product_helper_ptl.inl  | 5 +++++
 .../xe3_core/ptl/linux/product_helper_tests_ptl_linux.cpp   | 6 ------
 .../unit_test/xe3_core/ptl/product_helper_tests_ptl.cpp     | 4 ++++
 4 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/shared/source/xe3_core/linux/product_helper_ptl.cpp b/shared/source/xe3_core/linux/product_helper_ptl.cpp
index 388fe92339..2c99397054 100644
--- a/shared/source/xe3_core/linux/product_helper_ptl.cpp
+++ b/shared/source/xe3_core/linux/product_helper_ptl.cpp
@@ -34,11 +34,6 @@ bool ProductHelperHw<gfxProduct>::isDisableScratchPagesSupported() const {
     return true;
 }
 
-template <>
-bool ProductHelperHw<gfxProduct>::isTlbFlushRequired() const {
-    return false;
-}
-
 template <>
 uint64_t ProductHelperHw<gfxProduct>::getSharedSystemPatIndex() const {
     return 1;
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 ce5b2553b7..29a5c85100 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
@@ -49,4 +49,9 @@ bool ProductHelperHw<gfxProduct>::isMisalignedUserPtr2WayCoherent() const {
     return true;
 }
 
+template <>
+bool ProductHelperHw<gfxProduct>::isTlbFlushRequired() const {
+    return false;
+}
+
 } // namespace NEO
diff --git a/shared/test/unit_test/xe3_core/ptl/linux/product_helper_tests_ptl_linux.cpp b/shared/test/unit_test/xe3_core/ptl/linux/product_helper_tests_ptl_linux.cpp
index 08b18f7eb2..5e497262c9 100644
--- a/shared/test/unit_test/xe3_core/ptl/linux/product_helper_tests_ptl_linux.cpp
+++ b/shared/test/unit_test/xe3_core/ptl/linux/product_helper_tests_ptl_linux.cpp
@@ -54,9 +54,3 @@ PTLTEST_F(PtlHwInfoLinux, WhenGtIsSetupThenGtSystemInfoIsCorrect) {
     EXPECT_GT(gtSystemInfo.DualSubSliceCount, 0u);
     EXPECT_GT(gtSystemInfo.MaxDualSubSlicesSupported, 0u);
 }
-
-using PtlProductHelperTest = ProductHelperTest;
-
-PTLTEST_F(PtlProductHelperTest, givenProductHelperWhenAskedIfIsTlbFlushRequiredThenFalseIsReturned) {
-    EXPECT_FALSE(productHelper->isTlbFlushRequired());
-}
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 7589dc9856..da07365d97 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
@@ -139,4 +139,8 @@ PTLTEST_F(PtlProductHelper, givenProductHelperWhenCheckingIsHostDeviceUsmPoolAll
 
 PTLTEST_F(PtlProductHelper, givenProductHelperWhenIsMisalignedUserPtr2WayCoherentThenReturnTrue) {
     EXPECT_TRUE(productHelper->isMisalignedUserPtr2WayCoherent());
+}
+
+PTLTEST_F(PtlProductHelper, givenProductHelperWhenAskedIfIsTlbFlushRequiredThenFalseIsReturned) {
+    EXPECT_FALSE(productHelper->isTlbFlushRequired());
 }
\ No newline at end of file