CONFIG_CRYPTO_AES_SPARC64 is not available for thedefaultarchitecture x86.
Result is shown for architecture 64BIT

AES cipher algorithms (SPARC64)

modulename: aes-sparc64.ko


Linux Kernel Configuration
└─>Cryptographic API
└─>AES cipher algorithms (SPARC64)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Use SPARC64 crypto opcodes for AES algorithm.

AES cipher algorithms (FIPS-197). AES uses the Rijndael

Rijndael appears to be consistently a very good performer in
both hardware and software across a wide range of computing
environments regardless of its use in feedback or non-feedback
modes. Its key setup time is excellent, and its key agility is
good. Rijndael's very low memory requirements make it very well
suited for restricted-space environments, in which it also
demonstrates excellent performance. Rijndael's operations are
among the easiest to defend against power and timing attacks.

The AES specifies three key sizes: 128, 192 and 256 bits

See <> for more information.

In addition to AES cipher algorithm support, the acceleration
for some popular block cipher mode is supported too, including
ECB and CBC.

source code: