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Wire up crc64_be_arch() and crc64_nvme_arch() for 64-bit RISC-V using crc-clmul-template.h. This greatly improves the performance of these CRCs on Zbc-capable CPUs in 64-bit kernels. These optimized CRC64 functions are not yet supported in 32-bit kernels, since crc-clmul-template.h assumes that the CRC fits in an unsigned long. That implementation limitation could be addressed, but it would add a fair bit of complexity, so it has been omitted for now. Tested-by: Björn Töpel <bjorn@rivosinc.com> Acked-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20250216225530.306980-5-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@google.com>
19 lines
377 B
C
19 lines
377 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* RISC-V optimized most-significant-bit-first CRC64
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*
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* Copyright 2025 Google LLC
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*/
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#include "crc-clmul.h"
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typedef u64 crc_t;
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#define LSB_CRC 0
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#include "crc-clmul-template.h"
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u64 crc64_msb_clmul(u64 crc, const void *p, size_t len,
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const struct crc_clmul_consts *consts)
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{
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return crc_clmul(crc, p, len, consts);
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}
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