tree cb46d2598a22aeffb68827b1d09fe4cb1dcd7612
parent f139cfa7cdccd0b315fad098889897b5fcd389b0
author Austin Zhang <austin.zhang@intel.com> 1218074223 +0800
committer Herbert Xu <herbert@gondor.apana.org.au> 1219988990 +1000

crypto: crc32c - Use Intel CRC32 instruction

From NHM processor onward, Intel processors can support hardware accelerated
CRC32c algorithm with the new CRC32 instruction in SSE 4.2 instruction set.
The patch detects the availability of the feature, and chooses the most proper
way to calculate CRC32c checksum.
Byte code instructions are used for compiler compatibility.
No MMX / XMM registers is involved in the implementation.

Signed-off-by: Austin Zhang <austin.zhang@intel.com>
Signed-off-by: Kent Liu <kent.liu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>