C++ (Cpp) KeInvalidateTlbEntry Examples

Example #1

File: page.c Project: GYGit/reactos

NTSTATUS
NTAPI
MmCreateVirtualMappingUnsafe(
    PEPROCESS Process,
    PVOID Address,
    ULONG PageProtection,
    PPFN_NUMBER Pages,
    ULONG PageCount)
{
    ULONG i;
    MMPTE TmplPte, *Pte;

    ASSERT((ULONG_PTR)Address % PAGE_SIZE == 0);

    /* Check if the range is valid */
    if ((Process == NULL && Address < MmSystemRangeStart) ||
        (Process != NULL && Address > MmHighestUserAddress))
    {
        DPRINT1("Address 0x%p is invalid for process %p\n", Address, Process);
        ASSERT(FALSE);
    }

    TmplPte.u.Long = 0;
    TmplPte.u.Hard.Valid = 1;
    MiSetPteProtection(&TmplPte, PageProtection);

    TmplPte.u.Flush.Owner = (Address < MmHighestUserAddress) ? 1 : 0;

//__debugbreak();

    for (i = 0; i < PageCount; i++)
    {
        TmplPte.u.Hard.PageFrameNumber = Pages[i];

        Pte = MiGetPteForProcess(Process, Address, TRUE);

DPRINT("MmCreateVirtualMappingUnsafe, Address=%p, TmplPte=%p, Pte=%p\n",
        Address, TmplPte.u.Long, Pte);

        if (InterlockedExchangePte(Pte, TmplPte))
        {
            KeInvalidateTlbEntry(Address);
        }

        if (MiIsHyperspaceAddress(Pte))
            MmDeleteHyperspaceMapping((PVOID)PAGE_ROUND_DOWN(Pte));

        Address = (PVOID)((ULONG64)Address + PAGE_SIZE);
    }


    return STATUS_SUCCESS;
}

Example #2

File: kdmemsup.c Project: HBelusca/NasuTek-Odyssey

static
ULONG_PTR
KdpPhysMap(ULONG_PTR PhysAddr, LONG Len)
{
    MMPTE TempPte;
    PMMPTE PointerPte;
    ULONG_PTR VirtAddr;

    TempPte.u.Long = PDE_PRESENT_BIT | PDE_W_BIT | PDE_PWT_BIT |
                     PDE_PCD_BIT | PDE_ACCESSED_BIT | PDE_DIRTY_BIT;

    if ((PhysAddr & (PAGE_SIZE - 1)) + Len > PAGE_SIZE)
    {
        TempPte.u.Hard.PageFrameNumber = (PhysAddr >> PAGE_SHIFT) + 1;
        PointerPte = MiAddressToPte((PVOID)MI_KDBG_TMP_PAGE_1);
        *PointerPte = TempPte;
        VirtAddr = (ULONG_PTR)PointerPte << 10;
        KeInvalidateTlbEntry((PVOID)VirtAddr);
    }