Daif
Daif is a term used in ARM architecture and Linux kernel development to refer to the processor state that controls masking of certain exceptions. The acronym DAIF stands for Debug, Asynchronous abort, IRQ (interrupt request), and FIQ (fast interrupt request). In ARMv8-A, these correspond to bits in the processor state that can be set to mask or cleared to unmask the associated exceptions.
In practice, a set bit in the DAIF field means that the corresponding class of interrupt or
The concept is mainly relevant to low-level programming, operating system kernels, and other software that runs
Daif is architecture-specific and not applicable in user-space software running on general-purpose processors. Its understanding requires