mirror of
https://github.com/raspberrypi/linux.git
synced 2025-12-19 16:24:21 +00:00
511484fa88
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
378 B
C
19 lines
378 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* RISC-V optimized least-significant-bit-first CRC64
|
|
*
|
|
* Copyright 2025 Google LLC
|
|
*/
|
|
|
|
#include "crc-clmul.h"
|
|
|
|
typedef u64 crc_t;
|
|
#define LSB_CRC 1
|
|
#include "crc-clmul-template.h"
|
|
|
|
u64 crc64_lsb_clmul(u64 crc, const void *p, size_t len,
|
|
const struct crc_clmul_consts *consts)
|
|
{
|
|
return crc_clmul(crc, p, len, consts);
|
|
}
|