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RISC-V Unaligned Access Enablement Broken in v7.2

Details on the bug affecting unaligned access in RISC-V v7.2 and possible workarounds.

An investigation into a prolonged Linux v7.2 boot revealed inefficiencies in unaligned loads within the xxh64_update function. Despite RISC-V's support for unaligned access, a bug necessitates specific configurations that currently prove ineffective. This issue is significant for the RISC-V community and warrants reporting as a legitimate bug.