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If CPL is not of the required privilege level, then the instructions that get affected is

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in Microprocessor by (39.4k points)
If CPL is not of the required privilege level, then the instructions that get affected is

(a) IRET

(b) POPF

(c) IRET and POPF

(d) None of the mentioned

This question was addressed to me at a job interview.

The question is from Protection in section 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

1 Answer

0 votes
by (49.2k points)
Right option is (c) IRET and POPF

To explain I would say: The IRET and POPF instructions do not perform any of their functions, if CPL is not of the required privilege level.

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