/proc/cpu/alignment is missing

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How I can get /proc/cpu/alignment to be arrived?

I need to check application for misaligned memory access. According to https://www.kernel.org/doc/Documentation/arm/mem_alignment I need to set 3 into /proc/cpu/alignment but this file exists nat at all my os (only armv7 raspberry kernel has this file, armv8 and x64 kernels does not)

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