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crypto: x86 - Remove CONFIG_AS_AVX512 handling

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Current minimum required version of binutils is 2.25,
which supports AVX-512 instruction mnemonics.

Remove check for assembler support of AVX-512 instructions
and all relevant macros for conditional compilation.

No functional change intended.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Reviewed-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Uros Bizjak
2025-04-04 09:41:02 +02:00
committed by Herbert Xu
parent d032a27e8f
commit bc23fe6dc1
7 changed files with 9 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/crypto/Kconfig
View File

@@ -320,7 +320,7 @@ config CRYPTO_ARIA_AESNI_AVX2_X86_64
config CRYPTO_ARIA_GFNI_AVX512_X86_64
tristate "Ciphers: ARIA with modes: ECB, CTR (AVX512/GFNI)"
depends on X86 && 64BIT && AS_AVX512 && AS_GFNI
depends on X86 && 64BIT && AS_GFNI
select CRYPTO_SKCIPHER
select CRYPTO_ALGAPI
select CRYPTO_ARIA

3
arch/x86/crypto/Makefile
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@@ -43,8 +43,7 @@ obj-$(CONFIG_CRYPTO_AEGIS128_AESNI_SSE2) += aegis128-aesni.o
aegis128-aesni-y := aegis128-aesni-asm.o aegis128-aesni-glue.o
obj-$(CONFIG_CRYPTO_CHACHA20_X86_64) += chacha-x86_64.o
chacha-x86_64-y := chacha-avx2-x86_64.o chacha-ssse3-x86_64.o chacha_glue.o
chacha-x86_64-$(CONFIG_AS_AVX512) += chacha-avx512vl-x86_64.o
chacha-x86_64-y := chacha-avx2-x86_64.o chacha-ssse3-x86_64.o chacha-avx512vl-x86_64.o chacha_glue.o
obj-$(CONFIG_CRYPTO_AES_NI_INTEL) += aesni-intel.o
aesni-intel-y := aesni-intel_asm.o aesni-intel_glue.o

4
arch/x86/crypto/blake2s-core.S
View File

@@ -29,7 +29,6 @@ SIGMA:
.byte 13, 7, 12, 3, 11, 14, 1, 9, 2, 5, 15, 8, 10, 0, 4, 6
.byte 6, 14, 11, 0, 15, 9, 3, 8, 10, 12, 13, 1, 5, 2, 7, 4
.byte 10, 8, 7, 1, 2, 4, 6, 5, 13, 15, 9, 3, 0, 11, 14, 12
#ifdef CONFIG_AS_AVX512
.section .rodata.cst64.BLAKE2S_SIGMA2, "aM", @progbits, 640
.align 64
SIGMA2:
@@ -43,7 +42,6 @@ SIGMA2:
.long 6, 13, 0, 14, 12, 2, 1, 11, 15, 4, 5, 8, 7, 9, 3, 10
.long 15, 5, 4, 13, 10, 7, 3, 11, 12, 2, 0, 6, 9, 8, 1, 14
.long 8, 7, 14, 11, 13, 15, 0, 12, 10, 4, 5, 6, 3, 2, 1, 9
#endif /* CONFIG_AS_AVX512 */
.text
SYM_FUNC_START(blake2s_compress_ssse3)
@@ -174,7 +172,6 @@ SYM_FUNC_START(blake2s_compress_ssse3)
RET
SYM_FUNC_END(blake2s_compress_ssse3)
#ifdef CONFIG_AS_AVX512
SYM_FUNC_START(blake2s_compress_avx512)
vmovdqu (%rdi),%xmm0
vmovdqu 0x10(%rdi),%xmm1
@@ -253,4 +250,3 @@ SYM_FUNC_START(blake2s_compress_avx512)
vzeroupper
RET
SYM_FUNC_END(blake2s_compress_avx512)
#endif /* CONFIG_AS_AVX512 */

6
arch/x86/crypto/blake2s-glue.c
View File

@@ -41,8 +41,7 @@ void blake2s_compress(struct blake2s_state *state, const u8 *block,
SZ_4K / BLAKE2S_BLOCK_SIZE);
kernel_fpu_begin();
if (IS_ENABLED(CONFIG_AS_AVX512) &&
static_branch_likely(&blake2s_use_avx512))
if (static_branch_likely(&blake2s_use_avx512))
blake2s_compress_avx512(state, block, blocks, inc);
else
blake2s_compress_ssse3(state, block, blocks, inc);
@@ -59,8 +58,7 @@ static int __init blake2s_mod_init(void)
if (boot_cpu_has(X86_FEATURE_SSSE3))
static_branch_enable(&blake2s_use_ssse3);
if (IS_ENABLED(CONFIG_AS_AVX512) &&
boot_cpu_has(X86_FEATURE_AVX) &&
if (boot_cpu_has(X86_FEATURE_AVX) &&
boot_cpu_has(X86_FEATURE_AVX2) &&
boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512VL) &&

6
arch/x86/crypto/chacha_glue.c
View File

@@ -45,8 +45,7 @@ static unsigned int chacha_advance(unsigned int len, unsigned int maxblocks)
static void chacha_dosimd(u32 *state, u8 *dst, const u8 *src,
unsigned int bytes, int nrounds)
{
if (IS_ENABLED(CONFIG_AS_AVX512) &&
static_branch_likely(&chacha_use_avx512vl)) {
if (static_branch_likely(&chacha_use_avx512vl)) {
while (bytes >= CHACHA_BLOCK_SIZE * 8) {
chacha_8block_xor_avx512vl(state, dst, src, bytes,
nrounds);
@@ -258,8 +257,7 @@ static int __init chacha_simd_mod_init(void)
cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL)) {
static_branch_enable(&chacha_use_avx2);
if (IS_ENABLED(CONFIG_AS_AVX512) &&
boot_cpu_has(X86_FEATURE_AVX512VL) &&
if (boot_cpu_has(X86_FEATURE_AVX512VL) &&
boot_cpu_has(X86_FEATURE_AVX512BW)) /* kmovq */
static_branch_enable(&chacha_use_avx512vl);
}

8
arch/x86/crypto/poly1305-x86_64-cryptogams.pl
View File

@@ -2811,18 +2811,10 @@ if ($avx>2) {
# reason stack layout is kept identical to poly1305_blocks_avx2. If not
# for this tail, we wouldn't have to even allocate stack frame...
if($kernel) {
$code .= "#ifdef CONFIG_AS_AVX512\n";
}
&declare_function("poly1305_blocks_avx512", 32, 4);
poly1305_blocks_avxN(1);
&end_function("poly1305_blocks_avx512");
if ($kernel) {
$code .= "#endif\n";
}
if (!$kernel && $avx>3) {
########################################################################
# VPMADD52 version using 2^44 radix.

6
arch/x86/crypto/poly1305_glue.c
View File

@@ -107,7 +107,7 @@ static void poly1305_simd_blocks(void *ctx, const u8 *inp, size_t len,
const size_t bytes = min_t(size_t, len, SZ_4K);
kernel_fpu_begin();
if (IS_ENABLED(CONFIG_AS_AVX512) && static_branch_likely(&poly1305_use_avx512))
if (static_branch_likely(&poly1305_use_avx512))
poly1305_blocks_avx512(ctx, inp, bytes, padbit);
else if (static_branch_likely(&poly1305_use_avx2))
poly1305_blocks_avx2(ctx, inp, bytes, padbit);
@@ -265,8 +265,8 @@ static int __init poly1305_simd_mod_init(void)
if (boot_cpu_has(X86_FEATURE_AVX) && boot_cpu_has(X86_FEATURE_AVX2) &&
cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, NULL))
static_branch_enable(&poly1305_use_avx2);
if (IS_ENABLED(CONFIG_AS_AVX512) && boot_cpu_has(X86_FEATURE_AVX) &&
boot_cpu_has(X86_FEATURE_AVX2) && boot_cpu_has(X86_FEATURE_AVX512F) &&
if (boot_cpu_has(X86_FEATURE_AVX) && boot_cpu_has(X86_FEATURE_AVX2) &&
boot_cpu_has(X86_FEATURE_AVX512F) &&
cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM | XFEATURE_MASK_AVX512, NULL) &&
/* Skylake downclocks unacceptably much when using zmm, but later generations are fast. */
boot_cpu_data.x86_vfm != INTEL_SKYLAKE_X)