[ros-arm-bringup] 41572: - Do not zero out MC_SYSTEM pages if they are "early pages" either. This could cause issues on certain systems where mapping the PFN database required "early pages", and they were zeroed before hyperspace was ready. - Add a new flag to MmGetContigousPages to specify if these pages should be zeroed or not. Allows the nonpaged pool pages not to get automatically zeroed when allocated (the NP pool allocator can do this by itself later). This allows initial nonpaged pool to

Author: ros-arm-bringup
Date: Tue Jun 23 10:32:11 2009
New Revision: 41572

URL: http://svn.reactos.org/svn/reactos?rev=41572&view=rev
Log:
- Do not zero out MC_SYSTEM pages if they are "early pages" either. This could
cause issues on certain systems where mapping the PFN database required "early
pages", and they were zeroed before hyperspace was ready.
- Add a new flag to MmGetContigousPages to specify if these pages should be zeroed or not.
Allows the nonpaged pool pages not to get automatically zeroed when allocated (the NP pool
allocator can do this by itself later). This allows initial nonpaged pool to be allocated
before hyperspace is ready.


Modified:
    trunk/reactos/ntoskrnl/include/internal/mm.h
    trunk/reactos/ntoskrnl/mm/cont.c
    trunk/reactos/ntoskrnl/mm/freelist.c

Modified: trunk/reactos/ntoskrnl/include/internal/mm.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/…
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/include/internal/mm.h [iso-8859-1] Tue Jun 23 10:32:11 2009
@@ -1125,7 +1125,8 @@
     ULONG NumberOfBytes,
     PHYSICAL_ADDRESS LowestAcceptableAddress,
     PHYSICAL_ADDRESS HighestAcceptableAddress,
-    PHYSICAL_ADDRESS BoundaryAddressMultiple
+    PHYSICAL_ADDRESS BoundaryAddressMultiple,
+    BOOLEAN ZeroPages
 );
 
 NTSTATUS

Modified: trunk/reactos/ntoskrnl/mm/cont.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/cont.c?rev=415…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/cont.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/cont.c [iso-8859-1] Tue Jun 23 10:32:11 2009
@@ -103,7 +103,8 @@
    PBase = MmGetContinuousPages(NumberOfBytes,
                                 LowestAcceptableAddress,
                                 HighestAcceptableAddress,
-                                BoundaryAddressMultiple);
+                                BoundaryAddressMultiple,
+                                TRUE);
    if (PBase == 0)
    {
       MmLockAddressSpace(MmGetKernelAddressSpace());

Modified: trunk/reactos/ntoskrnl/mm/freelist.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/freelist.c?rev…
==============================================================================
--- trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/freelist.c [iso-8859-1] Tue Jun 23 10:32:11 2009
@@ -138,7 +138,8 @@
 MmGetContinuousPages(ULONG NumberOfBytes,
                      PHYSICAL_ADDRESS LowestAcceptableAddress,
                      PHYSICAL_ADDRESS HighestAcceptableAddress,
-                     PHYSICAL_ADDRESS BoundaryAddressMultiple)
+                     PHYSICAL_ADDRESS BoundaryAddressMultiple,
+                     BOOLEAN ZeroPages)
 {
    ULONG NrPages;
    ULONG i, j;
@@ -222,7 +223,7 @@
          {
             if (MiGetPfnEntry(i)->Flags.Zero == 0)
             {
-	       MiZeroPage(i);
+                if (ZeroPages) MiZeroPage(i);
             }
             else
             {
@@ -727,7 +728,7 @@
              /* Allocate an early page -- we'll account for it later */
              KeReleaseQueuedSpinLock(LockQueuePfnLock, oldIrql);
              PfnOffset = MmAllocEarlyPage();
-             MiZeroPage(PfnOffset);
+             if (Consumer != MC_SYSTEM) MiZeroPage(PfnOffset);
              return PfnOffset;
          }