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CONFIG_XTENSA_LOAD_STORE: Load/store exception handler for memory only readable with l32

General informations

The Linux kernel configuration item CONFIG_XTENSA_LOAD_STORE:

Help text

The Xtensa architecture only allows reading memory attached to its instruction bus with l32r and l32i instructions, all other instructions raise an exception with the LoadStoreErrorCause code. This makes it hard to use some configurations, e.g. store string literals in FLASH memory attached to the instruction bus.

Say Y here to enable exception handler that allows transparent byte and 2-byte access to memory attached to instruction bus.



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