xt-sys/exectos
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Refactor MMU for multi-paging support and add 5-Level paging #16

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harraiken wants to merge 35 commits from harraiken_mm into master
pull from: harraiken_mm
merge into: xt-sys:master
Conversation 0 Commits 35 Files Changed 42 +5 -14
1 changed files with 5 additions and 14 deletions
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Showing only changes of commit 1e11acee72 - Show all commits

19
xtoskrnl/mm/hlpool.c
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@ -190,7 +190,7 @@ MmMapHardwareMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
ReturnAddress = (PVOID)(ULONG_PTR)ReturnAddress + MM_PAGE_SIZE;
/* Check if PTE is valid */
if(PtePointer->Valid)
if(MmpPageMapRoutines->PteValid(PtePointer))
{
/* PTE is not available, go to the next one */
BaseAddress = ReturnAddress;
@ -219,9 +219,7 @@ MmMapHardwareMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
PtePointer = (PHARDWARE_PTE)MmpGetPteAddress(BaseAddress);
/* Fill the PTE */
PtePointer->PageFrameNumber = (PFN_NUMBER)(PhysicalAddress.QuadPart >> MM_PAGE_SHIFT);
PtePointer->Valid = 1;
PtePointer->Writable = 1;
MmpPageMapRoutines->SetPte(PtePointer, (PFN_NUMBER)(PhysicalAddress.QuadPart >> MM_PAGE_SHIFT), TRUE);
/* Advance to the next address */
PhysicalAddress.QuadPart += MM_PAGE_SIZE;
@ -268,8 +266,7 @@ MmMarkHardwareMemoryWriteThrough(IN PVOID VirtualAddress,
for(Page = 0; Page < PageCount; Page++)
{
/* Mark pages as CD/WT */
PtePointer->CacheDisable = 1;
PtePointer->WriteThrough = 1;
MmpPageMapRoutines->SetPteCaching(PtePointer, TRUE, TRUE);
PtePointer++;
}
}
@ -302,9 +299,7 @@ MmRemapHardwareMemory(IN PVOID VirtualAddress,
PtePointer = (PHARDWARE_PTE)MmpGetPteAddress(VirtualAddress);
/* Remap the PTE */
PtePointer->PageFrameNumber = (PFN_NUMBER)(PhysicalAddress.QuadPart >> MM_PAGE_SHIFT);
PtePointer->Valid = 1;
PtePointer->Writable = 1;
MmpPageMapRoutines->SetPte(PtePointer, (PFN_NUMBER)(PhysicalAddress.QuadPart >> MM_PAGE_SHIFT), TRUE);
/* Check if TLB needs to be flushed */
if(FlushTlb)
@ -356,11 +351,7 @@ MmUnmapHardwareMemory(IN PVOID VirtualAddress,
for(Page = 0; Page < PageCount; Page++)
{
/* Unmap the PTE and get the next one */
PtePointer->CacheDisable = 0;
PtePointer->Valid = 0;
PtePointer->Writable = 0;
PtePointer->WriteThrough = 0;
PtePointer->PageFrameNumber = 0;
MmpPageMapRoutines->ClearPte(PtePointer);
PtePointer++;
}