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The use of the term "glue" in filenames is a Crypto API-ism that rarely
shows up elsewhere in lib/ or arch/*/lib/. I think adopting it there
was a mistake. The library just uses standard functions, so the amount
of code that could be considered "glue" is quite small. And while often
the C functions just wrap the assembly functions, there are also cases
like crc32c_arch() in arch/x86/lib/crc32-glue.c that blur the line by
in-lining the actual implementation into the C function. That's not
"glue code", but rather the actual code.
Therefore, let's drop "glue" from the filenames and instead use e.g.
crc32.c instead of crc32-glue.c.
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250424002038.179114-4-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
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All of the CRC library's CPU feature static_keys are initialized by
initcalls and never change afterwards, so there's no need for them to be
in the regular .data section. Put them in .data..ro_after_init instead.
Reviewed-by: "Martin K. Petersen" <martin.petersen@oracle.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Heiko Carstens <hca@linux.ibm.com> # s390
Link: https://lore.kernel.org/r/20250413154350.10819-1-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
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Following the standardization on crc32c() as the lib entry point for the
Castagnoli CRC32 instead of the previous mix of crc32c(), crc32c_le(),
and __crc32c_le(), make the same change to the underlying base and arch
functions that implement it.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20250208024911.14936-7-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
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Move the powerpc CRC32C assembly code into the lib directory and wire it
up to the library interface. This allows it to be used without going
through the crypto API. It remains usable via the crypto API too via
the shash algorithms that use the library interface. Thus all the
arch-specific "shash" code becomes unnecessary and is removed.
Note: to see the diff from arch/powerpc/crypto/crc32c-vpmsum_glue.c to
arch/powerpc/lib/crc32-glue.c, view this commit with 'git show -M10'.
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20241202010844.144356-9-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
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