https://git.reactos.org/?p=reactos.git;a=commitdiff;h=3d17a7590d706ac88dd6d7997f2cbecc873e9405
commit 3d17a7590d706ac88dd6d7997f2cbecc873e9405 Author: Timo Kreuzer <[email protected]> AuthorDate: Sun Feb 4 19:20:20 2018 +0100 Commit: Timo Kreuzer <[email protected]> CommitDate: Thu Oct 1 11:24:42 2020 +0200 [NTOS:MM] Fix paged pool initialization on x64 --- ntoskrnl/mm/ARM3/mminit.c | 25 ++++++++++++++----------- 1 file changed, 14 insertions(+), 11 deletions(-) diff --git a/ntoskrnl/mm/ARM3/mminit.c b/ntoskrnl/mm/ARM3/mminit.c index b83588a4cca..0bae38e3e02 100644 --- a/ntoskrnl/mm/ARM3/mminit.c +++ b/ntoskrnl/mm/ARM3/mminit.c @@ -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.
