[tkreuzer] 44073: [MM] Implement MmIsAddressValid for amd64.

Author: tkreuzer
Date: Tue Nov 10 05:19:43 2009
New Revision: 44073

URL: http://svn.reactos.org/svn/reactos?rev=44073&view=rev
Log:
[MM]
Implement MmIsAddressValid for amd64.

Modified:
    branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/mmsup.c
    branches/ros-amd64-bringup/reactos/ntoskrnl/mm/amd64/page.c

Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/mmsup.c
URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr...
==============================================================================
--- branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/mmsup.c [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/ntoskrnl/mm/ARM3/mmsup.c [iso-8859-1] Tue Nov 10 05:19:43 2009
@@ -62,6 +62,7 @@
    return FALSE;
 }

+#ifndef _M_AMD64
 /*
  * @implemented
  */
@@ -87,6 +88,7 @@
     //
     return TRUE;
 }
+#endif

/*
  * @unimplemented

Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/mm/amd64/page.c
URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr...
==============================================================================
--- branches/ros-amd64-bringup/reactos/ntoskrnl/mm/amd64/page.c [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/ntoskrnl/mm/amd64/page.c [iso-8859-1] Tue Nov 10 05:19:43 2009
@@ -96,12 +96,12 @@

/* Get the PPE */
         Pte = MiAddressToPpe(Address);
-        if (Pte->u.Hard.Valid)
+        if (!Pte->u.Hard.Valid)
             return NULL;

/* Get the PDE */
         Pte = MiAddressToPde(Address);
-        if (Pte->u.Hard.Valid)
+        if (!Pte->u.Hard.Valid)
             return NULL;

/* Get the PTE */
@@ -542,5 +542,16 @@
     return 0;
 }

+BOOLEAN
+NTAPI
+MmIsAddressValid(IN PVOID VirtualAddress)
+{
+    /* Check all four page table levels */
+    return (MiAddressToPxe(VirtualAddress)->u.Hard.Valid != 0 &&
+            MiAddressToPpe(VirtualAddress)->u.Hard.Valid != 0 &&
+            MiAddressToPde(VirtualAddress)->u.Hard.Valid != 0 &&
+            MiAddressToPte(VirtualAddress)->u.Hard.Valid != 0);
+}
+

/* EOF */