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[NTOS:MM] Fix paged pool initialization on x64

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This commit is contained in:
Timo Kreuzer 2018-02-04 19:20:20 +01:00
parent ffc96d26ec
commit 3d17a7590d
1 changed files with 14 additions and 11 deletions
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25
ntoskrnl/mm/ARM3/mminit.c
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@ -1755,7 +1755,7 @@ MiBuildPagedPool(VOID)
MMPDE TempPde = ValidKernelPde;
PFN_NUMBER PageFrameIndex;
KIRQL OldIrql;
SIZE_T Size;
SIZE_T Size, NumberOfPages, NumberOfPdes;
ULONG BitMapSize;
#if (_MI_PAGING_LEVELS >= 3)
MMPPE TempPpe = ValidKernelPpe;
@ -1814,17 +1814,17 @@ MiBuildPagedPool(VOID)
//
Size = MmSizeOfPagedPoolInBytes;
if (Size < MI_MIN_INIT_PAGED_POOLSIZE) Size = MI_MIN_INIT_PAGED_POOLSIZE;
Size = BYTES_TO_PAGES(Size);
NumberOfPages = BYTES_TO_PAGES(Size);
//
// Now check how many PTEs will be required for these many pages.
// Now check how many PDEs will be required for these many pages.
//
Size = (Size + (1024 - 1)) / 1024;
NumberOfPdes = (NumberOfPages + (PTE_PER_PAGE - 1)) / PTE_PER_PAGE;
//
// Recompute the page-aligned size of the paged pool, in bytes and pages.
// Recompute the PDE-aligned size of the paged pool, in bytes and pages.
//
MmSizeOfPagedPoolInBytes = Size * PAGE_SIZE * 1024;
MmSizeOfPagedPoolInBytes = NumberOfPdes * PTE_PER_PAGE * PAGE_SIZE;
MmSizeOfPagedPoolInPages = MmSizeOfPagedPoolInBytes >> PAGE_SHIFT;
#ifdef _M_IX86
@ -1860,6 +1860,9 @@ MiBuildPagedPool(VOID)
/* It is not, so map a fresh zeroed page */
TempPpe.u.Hard.PageFrameNumber = MiRemoveZeroPage(0);
MI_WRITE_VALID_PPE(PointerPpe, TempPpe);
MiInitializePfnForOtherProcess(TempPpe.u.Hard.PageFrameNumber,
(PMMPTE)PointerPpe,
PFN_FROM_PTE(MiAddressToPte(PointerPpe)));
}
}
#endif
@ -1921,10 +1924,10 @@ MiBuildPagedPool(VOID)
//
// We'll also allocate the bitmap header itself part of the same buffer.
//
Size = Size * 1024;
ASSERT(Size == MmSizeOfPagedPoolInPages);
BitMapSize = (ULONG)Size;
Size = sizeof(RTL_BITMAP) + (((Size + 31) / 32) * sizeof(ULONG));
NumberOfPages = NumberOfPdes * PTE_PER_PAGE;
ASSERT(NumberOfPages == MmSizeOfPagedPoolInPages);
BitMapSize = (ULONG)NumberOfPages;
Size = sizeof(RTL_BITMAP) + (((BitMapSize + 31) / 32) * sizeof(ULONG));
//
// Allocate the allocation bitmap, which tells us which regions have not yet
@ -1943,7 +1946,7 @@ MiBuildPagedPool(VOID)
(PULONG)(MmPagedPoolInfo.PagedPoolAllocationMap + 1),
BitMapSize);
RtlSetAllBits(MmPagedPoolInfo.PagedPoolAllocationMap);
RtlClearBits(MmPagedPoolInfo.PagedPoolAllocationMap, 0, 1024);
RtlClearBits(MmPagedPoolInfo.PagedPoolAllocationMap, 0, PTE_PER_PAGE);
//
// We have a second bitmap, which keeps track of where allocations end.