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Instead of exposing the s390-optimized SHA-1 code via s390-specific crypto_shash algorithms, instead just implement the sha1_blocks() library function. This is much simpler, it makes the SHA-1 library functions be s390-optimized, and it fixes the longstanding issue where the s390-optimized SHA-1 code was disabled by default. SHA-1 still remains available through crypto_shash, but individual architectures no longer need to handle it. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250712232329.818226-12-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>