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Implement initial memory manager infrastructure #24

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harraiken wants to merge 169 commits from memmgr into master
pull from: memmgr
merge into: xt-sys:master
Conversation 0 Commits 169 Files Changed 64 +4 -5
1 changed files with 4 additions and 5 deletions
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xtoskrnl/mm/mmgr.cc
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@@ -26,18 +26,17 @@ MM::Manager::ComputeBootImageSize(OUT PPFN_NUMBER BootImageSize)
{
PKERNEL_INITIALIZATION_BLOCK InitializationBlock;
PFN_NUMBER ImageSize;
ULONG PteSize;
ULONG_PTR Alignment;
/* Get the kernel initialization block */
InitializationBlock = KE::BootInformation::GetInitializationBlock();
/* Get the size of a PTE */
PteSize = MM::Paging::GetPteSize();
/* Calculate the alignment based on the PTE size */
Alignment = ((MM_PAGE_SIZE / MM::Paging::GetPteSize()) * MM_PAGE_SIZE);
/* Calculate the size of the boot image */
ImageSize = InitializationBlock->BootImageSize * MM_PAGE_SIZE;
ImageSize = (ImageSize + ((MM_PAGE_SIZE / PteSize) * MM_PAGE_SIZE) - 1) &
~(((MM_PAGE_SIZE / PteSize) * MM_PAGE_SIZE) - 1);
ImageSize = (ImageSize + Alignment - 1) & ~(Alignment - 1);
/* Return number of pages used by the boot image */
*BootImageSize = ImageSize / MM_PAGE_SIZE;