On Mon, Feb 18, 2013 at 06:03:29PM -0500, Jeff Cody wrote: > This adds the Castagnoli CRC32C algorithm, using the 0x11EDC6F41 > polynomial. > > This is extracted from the linux kernel cryptographic crc32.c module. > > The algorithm is based on: > > Castagnoli93: Guy Castagnoli and Stefan Braeuer and Martin Herrman > "Optimization of Cyclic Redundancy-Check Codes with 24 > and 32 Parity Bits", IEEE Transactions on Communication, > Volume 41, Number 6, June 1993 > > Signed-off-by: Jeff Cody <jc...@redhat.com> > --- > include/qemu/crc32c.h | 35 +++++++++++++++ > util/Makefile.objs | 1 + > util/crc32c.c | 115 > ++++++++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 151 insertions(+) > create mode 100644 include/qemu/crc32c.h > create mode 100644 util/crc32c.c
Okay. CRC32C is not the same as zlib's crc32(), so we need this new code. Interesting that gcc has built-ins for recent Intel CPUs which support CRC32C in hardware ;-). Stefan
