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Just before returning, blake2s_compress_ssse3() and blake2s_compress_avx512() store updated values to the 'h', 't', and 'f' fields of struct blake2s_ctx. But 'f' is always unchanged (which is correct; only the C code changes it). So, there's no need to write to 'f'. Use 64-bit stores (movq and vmovq) instead of 128-bit stores (movdqu and vmovdqu) so that only 't' is written. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20251102234209.62133-6-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>