A6.2.1 Instruction cache disabled behavior

If the instruction cache is disabled, fetches cannot access any of the instruction cache arrays. An exception is the instruction cache maintenance operations. If the instruction cache is disabled, the instruction cache maintenance operations can still execute normally.

If the instruction cache is disabled, all instruction fetches to cacheable memory are treated as if they were non-cacheable. This treatment means that instruction fetches might not be coherent with caches in other cores, and software must take account of this.

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