MdeModulePkg/DxeIplPeim: reserve page 0 for NULL pointer detection

[mirror_edk2.git] / MdeModulePkg / Core / DxeIplPeim / X64 / DxeLoadFunc.c

diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c
index 2867610bff4d8bc37211ea4892b716246d77e3a3..f465eb1d8ac4237f1702ee8de4df0fae2d0e1b23 100644 (file)
--- a/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c
+++ b/MdeModulePkg/Core/DxeIplPeim/X64/DxeLoadFunc.c
@@ -36,8 +36,12 @@ HandOffToDxeCore (
   EFI_VECTOR_HANDOFF_INFO         *VectorInfo;\r
   EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi;\r
 \r
+  //\r
+  // Clear page 0 and mark it as allocated if NULL pointer detection is enabled.\r
+  //\r
   if (IsNullDetectionEnabled ()) {\r
     ClearFirst4KPage (HobList.Raw);\r
+    BuildMemoryAllocationHob (0, EFI_PAGES_TO_SIZE (1), EfiBootServicesData);\r
   }\r
 \r
   //\r