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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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12
xtoskrnl/mm/amd64/mmgr.cc
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@@ -39,11 +39,11 @@ MM::Manager::InitializeMemoryLayout(VOID)
if(MM::Paging::GetXpaStatus())
{
/* Configure memory layout for 5-level paging, using 57bit address space and providing a 128 PB address space */
MemoryLayout.PfnDatabaseAddress = (PMMPFN)0xFFFEFA8000000000ULL;
MemoryLayout.PfnDatabase = (PMMPFN)0xFFFEFA8000000000ULL;
MemoryLayout.SelfMapAddress = (PVOID)MM_P5E_LA57_BASE;
/* Define the non-paged and paged pool regions */
MemoryLayout.NonPagedPoolStart = (PVOID)((ULONG_PTR)MemoryLayout.PfnDatabaseAddress + PfnDatabaseSize * MM_PAGE_SIZE);
MemoryLayout.NonPagedPoolStart = (PVOID)((ULONG_PTR)MemoryLayout.PfnDatabase + PfnDatabaseSize * MM_PAGE_SIZE);
MemoryLayout.NonPagedPoolEnd = (PVOID)0xFFFEFFFFFFBFFFFFULL;
MemoryLayout.PagedPoolStart = (PVOID)0xFFFEF8A000000000ULL;
MemoryLayout.PagedPoolEnd = (PVOID)(((ULONG_PTR)MemoryLayout.PagedPoolStart + PagedPoolSize) - 1);
@@ -51,18 +51,16 @@ MM::Manager::InitializeMemoryLayout(VOID)
/* Define hyperspace, system PTE space, and the user space limit */
MemoryLayout.HyperSpaceStart = (PVOID)0xFFFEF70000000000ULL;
MemoryLayout.HyperSpaceEnd = (PVOID)0xFFFEF77FFFFFFFFFULL;
MemoryLayout.SystemSpaceStart = (PVOID)0xFFFEF88000000000ULL;
MemoryLayout.SystemSpaceEnd = (PVOID)((ULONG_PTR)MemoryLayout.SystemSpaceStart + (NumberOfSystemPtes + 1) * MM_PAGE_SIZE);
MemoryLayout.UserSpaceEnd = (PVOID)0x07FFFFFFFFFFFFFULL;
}
else
{
/* Configure memory layout for 4-level paging, using 48bit address space and providing a 128 TB address space */
MemoryLayout.PfnDatabaseAddress = (PMMPFN)0xFFFFFA8000000000ULL;
MemoryLayout.PfnDatabase = (PMMPFN)0xFFFFFA8000000000ULL;
MemoryLayout.SelfMapAddress = (PVOID)MM_PXE_BASE;
/* Define the non-paged and paged pool regions */
MemoryLayout.NonPagedPoolStart = (PVOID)((ULONG_PTR)MemoryLayout.PfnDatabaseAddress + PfnDatabaseSize * MM_PAGE_SIZE);
MemoryLayout.NonPagedPoolStart = (PVOID)((ULONG_PTR)MemoryLayout.PfnDatabase + PfnDatabaseSize * MM_PAGE_SIZE);
MemoryLayout.NonPagedPoolEnd = (PVOID)0xFFFFFFFFFFBFFFFFULL;
MemoryLayout.PagedPoolStart = (PVOID)0xFFFFF8A000000000ULL;
MemoryLayout.PagedPoolEnd = (PVOID)(((ULONG_PTR)MemoryLayout.PagedPoolStart + PagedPoolSize) - 1);
@@ -70,8 +68,6 @@ MM::Manager::InitializeMemoryLayout(VOID)
/* Define hyperspace, system PTE space, and the user space limit */
MemoryLayout.HyperSpaceStart = (PVOID)0xFFFFF70000000000ULL;
MemoryLayout.HyperSpaceEnd = (PVOID)0xFFFFF77FFFFFFFFFULL;
MemoryLayout.SystemSpaceStart = (PVOID)0xFFFFF88000000000ULL;
MemoryLayout.SystemSpaceEnd = (PVOID)((ULONG_PTR)MemoryLayout.SystemSpaceStart + (NumberOfSystemPtes + 1) * MM_PAGE_SIZE);
MemoryLayout.UserSpaceEnd = (PVOID)0x000007FFFFFEFFFFULL;
}
}