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Refactor memory layout structure
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This commit is contained in:
Aiken Harris
2026-01-29 22:10:26 +01:00
parent 72f34c8286
commit 58669d3074
10 changed files with 67 additions and 47 deletions
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10
xtoskrnl/mm/amd64/pfn.cc
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@@ -40,14 +40,14 @@ MM::Pfn::InitializePfnDatabase(VOID)
MemoryLayout = MM::Manager::GetMemoryLayout();
/* Get the PFN database size and calculate the end of the PFN database virtual address space */
PfnDatabaseEnd = (PUCHAR)MemoryLayout->PfnDatabaseAddress + (PfnDatabaseSize * MM_PAGE_SIZE) - 1;
PfnDatabaseEnd = (PUCHAR)MemoryLayout->PfnDatabase + (PfnDatabaseSize * MM_PAGE_SIZE) - 1;
/* Get a template PTE for mapping the PFN database pages */
ValidPte = MM::Pte::GetValidPte();
/* Map the Page Directory and Page Directory Pointer tables for the PFN database */
MM::Pte::MapPPE(MemoryLayout->PfnDatabaseAddress, PfnDatabaseEnd, ValidPte);
MM::Pte::MapPDE(MemoryLayout->PfnDatabaseAddress, PfnDatabaseEnd, ValidPte);
MM::Pte::MapPPE(MemoryLayout->PfnDatabase, PfnDatabaseEnd, ValidPte);
MM::Pte::MapPDE(MemoryLayout->PfnDatabase, PfnDatabaseEnd, ValidPte);
/* Initialize the color tables */
MM::Colors::InitializeColorTables();
@@ -80,8 +80,8 @@ MM::Pfn::InitializePfnDatabase(VOID)
}
/* Map PFN database entries for this physical range */
MM::Pte::MapPTE(&((PMMPFN)MemoryLayout->PfnDatabaseAddress)[BasePage],
(PUCHAR)&((PMMPFN)MemoryLayout->PfnDatabaseAddress)[BasePage + PageCount] - 1,
MM::Pte::MapPTE(&((PMMPFN)MemoryLayout->PfnDatabase)[BasePage],
(PUCHAR)&((PMMPFN)MemoryLayout->PfnDatabase)[BasePage + PageCount] - 1,
ValidPte);
/* Split PFN database allocation out of the free descriptor */