UefiCpuPkg/PiSmmCpuDxeSmm: Add paging protection.

[mirror_edk2.git] / UefiCpuPkg / PiSmmCpuDxeSmm / X64 / SmmProfileArch.c

diff --git a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmProfileArch.c b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmProfileArch.c
index 065fb2c24c7dcf02322b900e123518776a8caaa0..cc393dcd894e126b3666f56058487c45415b17ec 100644 (file)
--- a/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmProfileArch.c
+++ b/UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmProfileArch.c
@@ -1,7 +1,7 @@
 /** @file\r
 X64 processor specific functions to enable SMM profile.\r
 \r
-Copyright (c) 2012 - 2015, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2012 - 2016, 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
@@ -45,12 +45,13 @@ InitSmmS3Cr3 (
   //\r
   // Generate PAE page table for the first 4GB memory space\r
   //\r
-  Pages = Gen4GPageTable (1, FALSE);\r
+  Pages = Gen4GPageTable (FALSE);\r
 \r
   //\r
   // Fill Page-Table-Level4 (PML4) entry\r
   //\r
-  PTEntry = (UINT64*)(UINTN)(Pages - EFI_PAGES_TO_SIZE (1));\r
+  PTEntry = (UINT64*)AllocatePageTableMemory (1);\r
+  ASSERT (PTEntry != NULL);\r
   *PTEntry = Pages | PAGE_ATTRIBUTE_BITS;\r
   ZeroMem (PTEntry + 1, EFI_PAGE_SIZE - sizeof (*PTEntry));\r
 \r