fix: add scratch page support with xekmd

Also explicitly disable it by default.


Signed-off-by: Naklicki, Mateusz <mateusz.naklicki@intel.com>

Author: luluu9

shared/source/os_interface/linux/xe/ioctl_helper_xe.cpp

@@ -968,6 +968,9 @@ uint32_t IoctlHelperXe::getFlagsForVmCreate(bool disableScratch, bool enablePage
     if (enablePageFault) {
         flags |= DRM_XE_VM_CREATE_FLAG_FAULT_MODE;
     }
+    if (!disableScratch) {
+        flags |= DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE;
+    }
     return flags;
 }
 

shared/source/xe2_hpg_core/linux/product_helper_bmg.cpp

@@ -33,5 +33,10 @@ int ProductHelperHw<gfxProduct>::configureHardwareCustom(HardwareInfo *hwInfo, O
     return 0;
 }
 
+template <>
+bool ProductHelperHw<gfxProduct>::isDisableScratchPagesSupported() const {
+    return true;
+}
+
 template class ProductHelperHw<gfxProduct>;
 } // namespace NEO

shared/source/xe2_hpg_core/linux/product_helper_lnl.cpp

@@ -35,5 +35,10 @@ int ProductHelperHw<gfxProduct>::configureHardwareCustom(HardwareInfo *hwInfo, O
     return 0;
 }
 
+template <>
+bool ProductHelperHw<gfxProduct>::isDisableScratchPagesSupported() const {
+    return true;
+}
+
 template class ProductHelperHw<gfxProduct>;
 } // namespace NEO

shared/test/unit_test/os_interface/linux/drm_tests.cpp

@@ -1549,7 +1549,7 @@ HWTEST2_F(DrmDisableScratchPagesDefaultTest,
 }
 
 HWTEST2_F(DrmDisableScratchPagesDefaultTest,
-          givenDefaultDisableScratchPagesThenCheckingGpuFaultCheckIsSetToDefaultAndScratchPageIsEnabled, IsNotPVC) {
+          givenDefaultDisableScratchPagesThenCheckingGpuFaultCheckIsSetToDefaultAndScratchPageIsEnabled, IsBeforeXeHpcCore) {
     auto executionEnvironment = std::make_unique<MockExecutionEnvironment>();
     DrmMockCheckPageFault drm{*executionEnvironment->rootDeviceEnvironments[0]};
     drm.configureScratchPagePolicy();

shared/test/unit_test/os_interface/linux/xe/ioctl_helper_xe_tests.cpp

@@ -456,14 +456,20 @@ TEST_F(IoctlHelperXeTest, whenGettingFlagsForVmCreateThenPropertValueIsReturned)
     DrmMock drm{*executionEnvironment->rootDeviceEnvironments[0]};
     auto xeIoctlHelper = std::make_unique<IoctlHelperXe>(drm);
 
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE), xeIoctlHelper->getFlagsForVmCreate(true, true, true));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE), xeIoctlHelper->getFlagsForVmCreate(true, true, false));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE), xeIoctlHelper->getFlagsForVmCreate(false, true, true));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE | DRM_XE_VM_CREATE_FLAG_FAULT_MODE), xeIoctlHelper->getFlagsForVmCreate(false, true, false));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE), xeIoctlHelper->getFlagsForVmCreate(true, false, true));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE), xeIoctlHelper->getFlagsForVmCreate(true, false, false));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE), xeIoctlHelper->getFlagsForVmCreate(false, false, true));
-    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE), xeIoctlHelper->getFlagsForVmCreate(false, false, false));
+    for (auto &disableScratch : ::testing::Bool()) {
+        for (auto &enablePageFault : ::testing::Bool()) {
+            for (auto &useVmBind : ::testing::Bool()) {
+                auto flags = xeIoctlHelper->getFlagsForVmCreate(disableScratch, enablePageFault, useVmBind);
+                EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_LR_MODE), (flags & DRM_XE_VM_CREATE_FLAG_LR_MODE));
+                if (enablePageFault) {
+                    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_FAULT_MODE), (flags & DRM_XE_VM_CREATE_FLAG_FAULT_MODE));
+                }
+                if (!disableScratch) {
+                    EXPECT_EQ(static_cast<uint32_t>(DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE), (flags & DRM_XE_VM_CREATE_FLAG_SCRATCH_PAGE));
+                }
+            }
+        }
+    }
 }
 
 TEST_F(IoctlHelperXeTest, whenGettingFlagsForVmBindThenPropertValueIsReturned) {

shared/test/unit_test/os_interface/product_helper_tests.cpp

@@ -457,8 +457,7 @@ HWTEST_F(ProductHelperTest, givenProductHelperWhenAskedIfKmdMigrationIsSupported
     EXPECT_FALSE(productHelper->isKmdMigrationSupported());
 }
 
-HWTEST2_F(ProductHelperTest, givenProductHelperWhenAskedIfDisableScratchPagesIsSupportedThenReturnFalse, IsNotPVC) {
-
+HWTEST2_F(ProductHelperTest, givenProductHelperWhenAskedIfDisableScratchPagesIsSupportedThenReturnFalse, IsBeforeXeHpcCore) {
     EXPECT_FALSE(productHelper->isDisableScratchPagesSupported());
 }
 

shared/test/unit_test/xe2_hpg_core/bmg/linux/product_helper_tests_bmg_linux.cpp

@@ -61,8 +61,8 @@ BMGTEST_F(BmgProductHelperLinux, givenProductHelperWhenAskedIsKmdMigrationSuppor
     EXPECT_FALSE(productHelper->isKmdMigrationSupported());
 }
 
-BMGTEST_F(BmgProductHelperLinux, givenProductHelperWhenAskedIsDisableScratchPagesSupportedThenReturnFalse) {
-    EXPECT_FALSE(productHelper->isDisableScratchPagesSupported());
+BMGTEST_F(BmgProductHelperLinux, givenProductHelperWhenAskedIsDisableScratchPagesSupportedThenReturnTrue) {
+    EXPECT_TRUE(productHelper->isDisableScratchPagesSupported());
 }
 
 BMGTEST_F(BmgProductHelperLinux, WhenGtIsSetupThenGtSystemInfoIsCorrect) {

shared/test/unit_test/xe2_hpg_core/lnl/linux/product_helper_tests_lnl_linux.cpp

@@ -60,8 +60,8 @@ LNLTEST_F(LnlProductHelperLinux, givenProductHelperWhenAskedIsKmdMigrationSuppor
     EXPECT_FALSE(productHelper->isKmdMigrationSupported());
 }
 
-LNLTEST_F(LnlProductHelperLinux, givenProductHelperWhenAskedIsDisableScratchPagesSupportedThenReturnFalse) {
-    EXPECT_FALSE(productHelper->isDisableScratchPagesSupported());
+LNLTEST_F(LnlProductHelperLinux, givenProductHelperWhenAskedIsDisableScratchPagesSupportedThenReturnTrue) {
+    EXPECT_TRUE(productHelper->isDisableScratchPagesSupported());
 }
 
 LNLTEST_F(LnlProductHelperLinux, givenProductHelperWhenCheckDirectSubmissionSupportedThenFalseIsReturned) {