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[NTOS:MM:X64] Handle PPEs and PXEs as well in MmInitializeProcessAddressSpace()

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But don't set up the PFNs for the initial process on x64, as these have already been set up.
This commit is contained in:
Timo Kreuzer
2020-10-26 11:12:04 +01:00
parent 48d1bd2c88
commit 0726cfce10
1 changed files with 30 additions and 6 deletions
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36
ntoskrnl/mm/ARM3/procsup.c
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@@ -951,6 +951,12 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
PCHAR Destination;
USHORT Length = 0;
MMPTE TempPte;
#if (_MI_PAGING_LEVELS >= 3)
PMMPPE PointerPpe;
#endif
#if (_MI_PAGING_LEVELS == 4)
PMMPXE PointerPxe;
#endif
/* We should have a PDE */
ASSERT(Process->Pcb.DirectoryTableBase[0] != 0);
@@ -971,12 +977,19 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
ASSERT(Process->VadRoot.NumberGenericTableElements == 0);
Process->VadRoot.BalancedRoot.u1.Parent = &Process->VadRoot.BalancedRoot;
#ifdef _M_AMD64
/* On x64 the PFNs for the initial process are already set up */
if (Process != &KiInitialProcess) {
#endif
/* Lock PFN database */
OldIrql = MiAcquirePfnLock();
/* Setup the PFN for the PDE base of this process */
#ifdef _M_AMD64
#if (_MI_PAGING_LEVELS == 4)
PointerPte = MiAddressToPte(PXE_BASE);
#elif (_MI_PAGING_LEVELS == 3)
PointerPte = MiAddressToPte(PPE_BASE);
#else
PointerPte = MiAddressToPte(PDE_BASE);
#endif
@@ -985,15 +998,22 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
MiInitializePfn(PageFrameNumber, PointerPte, TRUE);
/* Do the same for hyperspace */
#ifdef _M_AMD64
PointerPde = MiAddressToPxe((PVOID)HYPER_SPACE);
#else
PointerPde = MiAddressToPde(HYPER_SPACE);
#endif
PointerPde = MiAddressToPde((PVOID)HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPde);
//ASSERT(Process->Pcb.DirectoryTableBase[0] == PageFrameNumber * PAGE_SIZE); // we're not lucky
MiInitializePfn(PageFrameNumber, (PMMPTE)PointerPde, TRUE);
#if (_MI_PAGING_LEVELS >= 3)
PointerPpe = MiAddressToPpe((PVOID)HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPpe);
MiInitializePfn(PageFrameNumber, PointerPpe, TRUE);
#endif
#if (_MI_PAGING_LEVELS == 4)
PointerPxe = MiAddressToPxe((PVOID)HYPER_SPACE);
PageFrameNumber = PFN_FROM_PTE(PointerPxe);
MiInitializePfn(PageFrameNumber, PointerPxe, TRUE);
#endif
/* Setup the PFN for the PTE for the working set */
PointerPte = MiAddressToPte(MI_WORKING_SET_LIST);
MI_MAKE_HARDWARE_PTE(&TempPte, PointerPte, MM_READWRITE, 0);
@@ -1013,6 +1033,10 @@ MmInitializeProcessAddressSpace(IN PEPROCESS Process,
/* Release PFN lock */
MiReleasePfnLock(OldIrql);
#ifdef _M_AMD64
} /* On x64 the PFNs for the initial process are already set up */
#endif
#ifdef _M_AMD64
/* On x64 we need a VAD for the shared user page */
Status = MiInsertSharedUserPageVad();