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Hardware/Processor

IRQL- Interrupt Request Level

An interrupt request level (IRQL) defines the hardware priority at which a processor operates at any given time. In the Windows Driver Model, a thread running at a low IRQL can be interrupted to run code at a higher IRQL. X-86 based system has 32 IRQL. IRQL                                   X86                        Ia64                         AMD64                                      Description Passive Level               o                                 o                                […]

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