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The Linux kernel configuration item CONFIG_RISCV_EFFICIENT_UNALIGNED_ACCESS
has multiple definitions:
arch/riscv/Kconfig
The configuration item CONFIG_RISCV_EFFICIENT_UNALIGNED_ACCESS:
CONFIG_NONPORTABLE
Assume that the system supports fast unaligned memory accesses. When enabled, this option improves the performance of the kernel on such systems. However, the kernel and userspace programs will run much more slowly, or will not be able to run at all, on systems that do not support efficient unaligned memory accesses.
arch/riscv/Kconfig
The configuration item CONFIG_RISCV_EFFICIENT_UNALIGNED_ACCESS:
CONFIG_NONPORTABLE
Say Y here if you want the kernel to assume that the CPU supports efficient unaligned memory accesses. When enabled, this option improves the performance of the kernel on such CPUs. However, the kernel will run much more slowly, or will not be able to run at all, on CPUs that do not support efficient unaligned memory accesses.
If unsure what to do here, say N.
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