From ff1c5837fafea4dab5f6232684416fd32d328039 Mon Sep 17 00:00:00 2001
From: Compute-Runtime-Validation <compute-runtime-validation@intel.com>
Date: Sat, 7 Dec 2024 05:53:48 +0100
Subject: [PATCH] Revert "fix: Disable dc flush mitigation"

This reverts commit 60a6d3875bbdc895053654c1427b83b76bfa7659.

Signed-off-by: Compute-Runtime-Validation <compute-runtime-validation@intel.com>
---
 .../xe2_hpg_core/lnl/copy_engine_aub_tests_lnl.cpp          | 2 +-
 shared/source/xe2_hpg_core/windows/product_helper_lnl.cpp   | 5 +++++
 .../lnl/windows/product_helper_tests_lnl_windows.cpp        | 6 +++---
 3 files changed, 9 insertions(+), 4 deletions(-)

diff --git a/opencl/test/unit_test/aub_tests/xe2_hpg_core/lnl/copy_engine_aub_tests_lnl.cpp b/opencl/test/unit_test/aub_tests/xe2_hpg_core/lnl/copy_engine_aub_tests_lnl.cpp
index 37f610bcb9..36d109682e 100644
--- a/opencl/test/unit_test/aub_tests/xe2_hpg_core/lnl/copy_engine_aub_tests_lnl.cpp
+++ b/opencl/test/unit_test/aub_tests/xe2_hpg_core/lnl/copy_engine_aub_tests_lnl.cpp
@@ -19,7 +19,7 @@ struct CopyEnginesLnlFixture : public CopyEngineXeHPAndLater<numTiles, useLocalM
 
     bool compressionSupported() const override {
         auto &ftrTable = MulticontextOclAubFixture::rootDevice->getHardwareInfo().featureTable;
-        return (ftrTable.flags.ftrFlatPhysCCS && ftrTable.flags.ftrXe2Compression);
+        return (ftrTable.flags.ftrFlatPhysCCS);
     }
 };
 
diff --git a/shared/source/xe2_hpg_core/windows/product_helper_lnl.cpp b/shared/source/xe2_hpg_core/windows/product_helper_lnl.cpp
index 58f6a19ac1..639e192d43 100644
--- a/shared/source/xe2_hpg_core/windows/product_helper_lnl.cpp
+++ b/shared/source/xe2_hpg_core/windows/product_helper_lnl.cpp
@@ -52,6 +52,11 @@ bool ProductHelperHw<gfxProduct>::isDirectSubmissionSupported(ReleaseHelper *rel
     return true;
 }
 
+template <>
+bool ProductHelperHw<gfxProduct>::mitigateDcFlush() const {
+    return true;
+}
+
 template <>
 bool ProductHelperHw<gfxProduct>::restartDirectSubmissionForHostptrFree() const {
     return true;
diff --git a/shared/test/unit_test/xe2_hpg_core/lnl/windows/product_helper_tests_lnl_windows.cpp b/shared/test/unit_test/xe2_hpg_core/lnl/windows/product_helper_tests_lnl_windows.cpp
index daeeda244a..3b29ea3891 100644
--- a/shared/test/unit_test/xe2_hpg_core/lnl/windows/product_helper_tests_lnl_windows.cpp
+++ b/shared/test/unit_test/xe2_hpg_core/lnl/windows/product_helper_tests_lnl_windows.cpp
@@ -23,9 +23,9 @@ LNLTEST_F(LnlProductHelperWindows, givenProductHelperWhenCheckDirectSubmissionSu
     EXPECT_TRUE(productHelper->isDirectSubmissionSupported(releaseHelper));
 }
 
-LNLTEST_F(LnlProductHelperWindows, givenProductHelperWhenDcFlushMitigationThenReturnFalse) {
-    EXPECT_FALSE(productHelper->mitigateDcFlush());
-    EXPECT_FALSE(productHelper->isDcFlushMitigated());
+LNLTEST_F(LnlProductHelperWindows, givenProductHelperWhenDcFlushMitigationThenReturnTrue) {
+    EXPECT_TRUE(productHelper->mitigateDcFlush());
+    EXPECT_TRUE(productHelper->isDcFlushMitigated());
 }
 
 LNLTEST_F(LnlProductHelperWindows, givenProductHelperWhenOverridePatIndexCalledThenCorrectValueIsReturned) {