From 147c02d66eb44678d724b539fe07d38e90be24f7 Mon Sep 17 00:00:00 2001
From: ReddestDream <reddestdream@gmail.com>
Date: Sun, 11 Feb 2018 17:19:00 -0500
Subject: [PATCH] Disable Page Table Protection.

Effectively disables the PT protection created by: 2ac1730bf2a51d6d0483347a0218e1768d6d7992, 147fd35c3e389ecd025dbfd243312bf5b22da7c9, and 41b4600c308d13fc90cef308c8fbb8f0e15f4e5f.

This fixes macOS boot issues.
---
 MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c  | 6 ------
 MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c | 5 -----
 2 files changed, 11 deletions(-)

diff --git a/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c b/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c
index 0bf99bc77e..5dc40c97aa 100644
--- a/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c
+++ b/MdeModulePkg/Core/DxeIplPeim/Ia32/DxeLoadFunc.c
@@ -149,12 +149,6 @@ Create4GPageTablesIa32Pae (
       );
   }
 
-  //
-  // Protect the page table by marking the memory used for page table to be
-  // read-only.
-  //
-  EnablePageTableProtection ((UINTN)PageMap, FALSE);
-
   return (UINTN) PageMap;
 }
 
diff --git a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
index cf3c3f94d8..80978e7919 100644
--- a/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
+++ b/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.c
@@ -805,11 +805,6 @@ CreateIdentityMappingPageTables (
       );
   }
 
-  //
-  // Protect the page table by marking the memory used for page table to be
-  // read-only.
-  //
-  EnablePageTableProtection ((UINTN)PageMap, TRUE);
 
   //
   // Set IA32_EFER.NXE if necessary.