/** @file\r
\r
-Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
);\r
}\r
\r
+/**\r
+ This function sets GDT/IDT buffer to be RO and XP.\r
+**/\r
+VOID\r
+PatchGdtIdtMap (\r
+ VOID\r
+ )\r
+{\r
+ EFI_PHYSICAL_ADDRESS BaseAddress;\r
+ UINTN Size;\r
+\r
+ //\r
+ // GDT\r
+ //\r
+ DEBUG ((DEBUG_INFO, "PatchGdtIdtMap - GDT:\n"));\r
+\r
+ BaseAddress = mGdtBuffer;\r
+ Size = ALIGN_VALUE(mGdtBufferSize, SIZE_4KB);\r
+ //\r
+ // The range should have been set to RO\r
+ // if it is allocated with EfiRuntimeServicesCode.\r
+ //\r
+ SmmSetMemoryAttributes (\r
+ BaseAddress,\r
+ Size,\r
+ EFI_MEMORY_XP\r
+ );\r
+\r
+ //\r
+ // IDT\r
+ //\r
+ DEBUG ((DEBUG_INFO, "PatchGdtIdtMap - IDT:\n"));\r
+\r
+ BaseAddress = gcSmiIdtr.Base;\r
+ Size = ALIGN_VALUE(gcSmiIdtr.Limit + 1, SIZE_4KB);\r
+ //\r
+ // The range should have been set to RO\r
+ // if it is allocated with EfiRuntimeServicesCode.\r
+ //\r
+ SmmSetMemoryAttributes (\r
+ BaseAddress,\r
+ Size,\r
+ EFI_MEMORY_XP\r
+ );\r
+}\r
+\r
/**\r
This function sets memory attribute according to MemoryAttributesTable.\r
**/\r