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5012bd2dc6
Drop 'inline' from all the *_mod_init_arch() functions so that the compiler will warn about any bugs where they are unused due to not being wired up properly. (There are no such bugs currently, so this just establishes a more robust convention for the future. Of course, these functions also tend to get inlined anyway, regardless of the keyword.) Link: https://lore.kernel.org/r/20250816020457.432040-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* x86-optimized SHA-512 block function
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*
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* Copyright 2025 Google LLC
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*/
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#include <asm/fpu/api.h>
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#include <linux/static_call.h>
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DEFINE_STATIC_CALL(sha512_blocks_x86, sha512_blocks_generic);
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#define DEFINE_X86_SHA512_FN(c_fn, asm_fn) \
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asmlinkage void asm_fn(struct sha512_block_state *state, \
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const u8 *data, size_t nblocks); \
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static void c_fn(struct sha512_block_state *state, const u8 *data, \
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size_t nblocks) \
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{ \
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if (likely(irq_fpu_usable())) { \
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kernel_fpu_begin(); \
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asm_fn(state, data, nblocks); \
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kernel_fpu_end(); \
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} else { \
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sha512_blocks_generic(state, data, nblocks); \
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} \
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}
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DEFINE_X86_SHA512_FN(sha512_blocks_ssse3, sha512_transform_ssse3);
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DEFINE_X86_SHA512_FN(sha512_blocks_avx, sha512_transform_avx);
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DEFINE_X86_SHA512_FN(sha512_blocks_avx2, sha512_transform_rorx);
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static void sha512_blocks(struct sha512_block_state *state,
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const u8 *data, size_t nblocks)
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{
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static_call(sha512_blocks_x86)(state, data, nblocks);
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}
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#define sha512_mod_init_arch sha512_mod_init_arch
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static void sha512_mod_init_arch(void)
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{
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if (cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL) &&
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boot_cpu_has(X86_FEATURE_AVX)) {
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if (boot_cpu_has(X86_FEATURE_AVX2) &&
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boot_cpu_has(X86_FEATURE_BMI2))
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static_call_update(sha512_blocks_x86,
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sha512_blocks_avx2);
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else
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static_call_update(sha512_blocks_x86,
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sha512_blocks_avx);
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} else if (boot_cpu_has(X86_FEATURE_SSSE3)) {
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static_call_update(sha512_blocks_x86, sha512_blocks_ssse3);
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}
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}
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