From 0680d08683a90cc740c507e5a8bb1016bf5f790e Mon Sep 17 00:00:00 2001
From: "Zhang, Shenglei" <shenglei.zhang@intel.com>
Date: Thu, 15 Aug 2019 10:23:14 +0800
Subject: [PATCH] MdeModulePkg/DxeIplPeim: Initialize pointer
 PageMapLevel5Entry

Initialize PageMapLevel5Entry at the beginning of the function.

This commit will fix a GCC 4.8.5 build failure introduced by commit
b3527dedc3951f061c5a73cb4fb2b0f95f47e08b.

OvmfPkg build failure wtih gcc 4.8.5 still exists at latest edk2 version.
The commit 46f8a6891606746ca8b1e684ac379ce271306dc0 seems not to fix
the build failure completely.

Cc: Dandan Bi <dandan.bi@intel.com>
Signed-off-by: Shenglei Zhang <shenglei.zhang@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Reviewed-by: Hao A Wu <hao.a.wu@intel.com>
---
 MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
index 2389f3eb48..516cf908bc 100644
--- a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
+++ b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
@@ -652,6 +652,11 @@ CreateIdentityMappingPageTables (
   UINT64                                        AddressEncMask;
   IA32_CR4                                      Cr4;
 
+  //
+  // Set PageMapLevel5Entry to suppress incorrect compiler/analyzer warnings
+  //
+  PageMapLevel5Entry = NULL;
+
   //
   // Make sure AddressEncMask is contained to smallest supported address field
   //