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Since CBC decryption is parallelizable, make the RISC-V implementation of AES-CBC decryption process multiple blocks at a time, instead of processing the blocks one by one. This should improve performance. Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20240208060851.154129-1-ebiggers@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>