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7. (8 points)For the figure shown below, answer questions: Interrupt request(1) Kernel or task(2) Get the interrupt vector(3) CPU context saving(4) ISR Interrupt latency*
7. (8 points)For the figure shown below, answer questions: Interrupt request(1) Kernel or task(2) Get the interrupt vector(3) CPU context saving(4) ISR Interrupt latency* Interrupt responding time Kernel ISR enter function(5) Kernel ISR exit function(7) User ISR code(6) Kernel ISR exit function(10) Task responding Interrupt task resume Interrupt return(9) CPU context restore(8) CPU context restore(11) interrupt return(12) B task Interrupt resume Describe the possible reason(s) of the interrupt latency. b) What does the kernel ISR enter function do? c) In what situation that the system goes to path B?
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Computer Architecture A Quantitative Approach
Authors: John L. Hennessy, David A. Patterson
4th edition
123704901, 978-0123704900
