- 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.


svn path=/trunk/; revision=41572

reactos/ntoskrnl/include/internal/mm.h

@@ -1125,7 +1125,8 @@ MmGetContinuousPages(
     ULONG NumberOfBytes,
     PHYSICAL_ADDRESS LowestAcceptableAddress,
     PHYSICAL_ADDRESS HighestAcceptableAddress,
-    PHYSICAL_ADDRESS BoundaryAddressMultiple
+    PHYSICAL_ADDRESS BoundaryAddressMultiple,
+    BOOLEAN ZeroPages
 );
 
 NTSTATUS

reactos/ntoskrnl/mm/cont.c

@@ -103,7 +103,8 @@ MmAllocateContiguousMemorySpecifyCache(IN SIZE_T NumberOfBytes,
    PBase = MmGetContinuousPages(NumberOfBytes,
                                 LowestAcceptableAddress,
                                 HighestAcceptableAddress,
-                                BoundaryAddressMultiple);
+                                BoundaryAddressMultiple,
+                                TRUE);
    if (PBase == 0)
    {
       MmLockAddressSpace(MmGetKernelAddressSpace());

reactos/ntoskrnl/mm/freelist.c

@@ -138,7 +138,8 @@ NTAPI
 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 @@ MmGetContinuousPages(ULONG NumberOfBytes,
          {
             if (MiGetPfnEntry(i)->Flags.Zero == 0)
             {
-	       MiZeroPage(i);
+                if (ZeroPages) MiZeroPage(i);
             }
             else
             {
@@ -727,7 +728,7 @@ MmAllocPage(ULONG Consumer, SWAPENTRY SwapEntry)
              /* 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;
          }