Re: [PATCH 0/3] Optimize CRC32C calculation using PCLMULQDQ in crc32c-intel module

From: Tim Chen <redacted>
Date: Tue, 25 Sep 2012 14:50:08 -0700

This patch series optimized CRC32C calculations with PCLMULQDQ
instruction for crc32c-intel module.  It speeds up the original
implementation by 1.6x for 1K buffer and by 3x for buffer 4k or
more.  The tcrypt module was enhanced for doing speed test
on crc32c calculations.

Signed-off-by: Tim Chen <redacted>

Great work.

I intend to do something nearly identical on sparc64 since we have
similar instructions in the form of "xmulx" and "xmulxhi" which return
the lower and upper 64-bits (respectively) of a XOR multiply.