CONFIG_CRYPTO_SHA512_S390 is not available for the selected architecture x86.
Result is shown for architecture s390

Hash functions: SHA-384 and SHA-512

modulename: sha512_s390.ko

configname: CONFIG_CRYPTO_SHA512_S390

Linux Kernel Configuration
└─>Accelerated Cryptographic Algorithms for CPU (s390)
└─>Hash functions: SHA-384 and SHA-512
In linux kernel since version 2.6.26 (release Date: 2008-07-13)
SHA-384 and SHA-512 secure hash algorithms (FIPS 180)

Architecture: s390

It is available as of z10.
source code: