NTHALAPI KIRQL FASTCALL KfRaiseIrql ( IN KIRQL NewIrql )

Definition at line 187 of file pic.c.

Referenced by HalInitSystem(), HalpGrowMapBufferWorker(), KeAcquireInStackQueuedSpinLock(), KeAcquireInStackQueuedSpinLockRaiseToSynch(), KeAcquireQueuedSpinLock(), KeAcquireQueuedSpinLockRaiseToSynch(), KeAcquireSpinLockRaiseToSynch(), KeQueryPerformanceCounter(), KeRaiseIrql(), KeRaiseIrqlToDpcLevel(), KeRaiseIrqlToSynchLevel(), KeSynchronizeExecution(), KeTryToAcquireQueuedSpinLock(), KeTryToAcquireQueuedSpinLockRaiseToSynch(), KfAcquireSpinLock(), KiAcquireDispatcherLock(), KiChainedDispatch(), KiCheckForApcDelivery(), KiDecrementerTrap(), KiDpcInterruptHandler(), KiExitV86Trap(), KiIdleLoop(), KiInitializeKernel(), KiInitializeSystem(), KiInterruptHandler(), KiSystemStartup(), KiSystemStartupBootStack(), KiSystemStartupReal(), KiTrap06Handler(), KiTrap0DHandler(), and KxRaiseIrql().

{
    ARM_STATUS_REGISTER Flags;
    PKIPCR Pcr = (PKIPCR)KeGetPcr();
    KIRQL CurrentIrql;
    ULONG InterruptMask;
    
    /* Disable interrupts */
    Flags = KeArmStatusRegisterGet();
    _disable();

    /* Read current IRQL */
    CurrentIrql = Pcr->Irql;
    
#ifdef IRQL_DEBUG
    /* Validate correct raise */
    if (CurrentIrql > NewIrql)
    {
        /* Crash system */
        Pcr->Irql = PASSIVE_LEVEL;
        KeBugCheck(IRQL_NOT_GREATER_OR_EQUAL);
    }
#endif
    /* Clear interrupts associated to the old IRQL */
    WRITE_REGISTER_ULONG(VIC_INT_CLEAR, 0xFFFFFFFF);
    
    /* Set the new interrupt mask */
    InterruptMask = Pcr->IrqlTable[NewIrql];
    WRITE_REGISTER_ULONG(VIC_INT_ENABLE, InterruptMask);

    /* Set new IRQL */
    Pcr->Irql = NewIrql;
    
    /* Restore interrupt state */
    if (!Flags.IrqDisable) _enable();
    
    /* Return old IRQL */
    return CurrentIrql;
}

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