Slice by 8 bytes

configname: CONFIG_CRC32_SLICEBY8

CRC32 implementation
└─>Slice by 8 bytes
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Calculate checksum 8 bytes at a time with a clever slicing algorithm.
This is the fastest algorithm, but comes with a 8KiB lookup table.
Most modern processors have enough cache to hold this table without
thrashing the cache.

This is the default implementation choice. Choose this one unless
you have a good reason not to.