Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
39 lines
896 B
C
39 lines
896 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* SHA-1 optimized for ARM64
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*
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* Copyright 2025 Google LLC
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*/
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#include <asm/simd.h>
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#include <linux/cpufeature.h>
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static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_ce);
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asmlinkage size_t __sha1_ce_transform(struct sha1_block_state *state,
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const u8 *data, size_t nblocks);
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static void sha1_blocks(struct sha1_block_state *state,
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const u8 *data, size_t nblocks)
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{
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if (static_branch_likely(&have_ce) && likely(may_use_simd())) {
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do {
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size_t rem;
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scoped_ksimd()
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rem = __sha1_ce_transform(state, data, nblocks);
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data += (nblocks - rem) * SHA1_BLOCK_SIZE;
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nblocks = rem;
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} while (nblocks);
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} else {
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sha1_blocks_generic(state, data, nblocks);
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}
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}
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#define sha1_mod_init_arch sha1_mod_init_arch
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static void sha1_mod_init_arch(void)
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{
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if (cpu_have_named_feature(SHA1))
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static_branch_enable(&have_ce);
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}
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