From aa52dc7498dafc07c51919e5210fd0505b4c1930 Mon Sep 17 00:00:00 2001
From: Thomas Faber <thomas.faber@reactos.org>
Date: Fri, 7 Aug 2015 15:52:04 +0000
Subject: [PATCH] [NTOS:MM] - Allow (and then ignore) PAGE_NOCACHE in the
 protection flags for MmMapViewOfSection CORE-9808

svn path=/trunk/; revision=68611
---
 reactos/ntoskrnl/include/internal/mm.h | 3 ++-
 reactos/ntoskrnl/mm/section.c          | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/reactos/ntoskrnl/include/internal/mm.h b/reactos/ntoskrnl/include/internal/mm.h
index 6a77a0cdb70..be245aac72a 100644
--- a/reactos/ntoskrnl/include/internal/mm.h
+++ b/reactos/ntoskrnl/include/internal/mm.h
@@ -115,7 +115,8 @@ typedef ULONG_PTR SWAPENTRY;
      PAGE_EXECUTE_READ | \
      PAGE_EXECUTE_READWRITE | \
      PAGE_EXECUTE_WRITECOPY | \
-     PAGE_NOACCESS)
+     PAGE_NOACCESS | \
+     PAGE_NOCACHE)
 
 #define PAGE_IS_READABLE                    \
     (PAGE_READONLY | \
diff --git a/reactos/ntoskrnl/mm/section.c b/reactos/ntoskrnl/mm/section.c
index b1d018a09c5..cdcebdf5fc0 100644
--- a/reactos/ntoskrnl/mm/section.c
+++ b/reactos/ntoskrnl/mm/section.c
@@ -4484,6 +4484,8 @@ MmMapViewOfSection(IN PVOID SectionObject,
         return STATUS_INVALID_PAGE_PROTECTION;
     }
 
+    /* FIXME: We should keep this, but it would break code checking equality */
+    Protect &= PAGE_NOCACHE;
 
     Section = (PROS_SECTION_OBJECT)SectionObject;
     AddressSpace = &Process->Vm;