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Hello,
In armv8 Spec, CTR_EL0.DIC/IDC is described as follows:
I really don't get the point of the two bits.
Can someone give me a scenario to explain how the two bits affect？
really appreciated.
42Bastian Schick is correct.
The situation also arises in case of dynamic compilation (C#, or emulation/virtualization like QEMU), or in case of debugging (setting a breakpoint usually requires modifying the instruction stream).