On Sun, Dec 01, 2024 at 05:08:25PM -0800, Eric Biggers wrote:

This patchset applies to v6.13-rc1 and is also available in git via:

    git fetch https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git crc32-lib-v4

CRC32 is a family of common non-cryptographic integrity check algorithms
that are fairly fast with a portable C implementation and become far
faster still with the CRC32 or carryless multiplication instructions
that most CPUs have.  9 architectures already have optimized code for at
least some CRC32 variants; however, except for arm64 this optimized code
was only accessible through the crypto API, not the library functions.

This patchset fixes that so that the CRC32 library functions use the
optimized code.  This allows users to just use the library instead of
the crypto API.  This is much simpler and also improves performance due
to eliminating the crypto API overhead including an indirect call.  Some
examples of updating users are included at the end of the patchset.

FYI, this patchset is now in linux-next via the crc-next branch in my repo.
Additional reviews and acks would always be appreciated, of course.

- Eric