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WIP observations from an XSAVE size mismatch kernel issue

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This commit is contained in:
Florian Weimer 2024-05-30 14:33:52 +02:00
parent 11db7b454a
commit a45dbfef5a
1 changed files with 46 additions and 39 deletions
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85
sysdeps/unix/sysv/linux/x86_64/dl-x86_cpu_feature_diagnostics.c
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@ -59,169 +59,176 @@ _dl_x86_cpu_feature_diagnostics_run (const struct cpu_features *cpu_features,
{ {
/* x86-64-v2 features. */ /* x86-64-v2 features. */
extern void _dl_x86_probe_cmpxchg16b (void) attribute_hidden; extern void _dl_x86_probe_cmpxchg16b (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, CMPXCHG16B), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, CMPXCHG16B),
_dl_x86_probe_cmpxchg16b); _dl_x86_probe_cmpxchg16b);
extern void _dl_x86_probe_sahf (void) attribute_hidden; extern void _dl_x86_probe_sahf (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, LAHF64_SAHF64), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, LAHF64_SAHF64),
_dl_x86_probe_sahf); _dl_x86_probe_sahf);
extern void _dl_x86_probe_popcnt (void) attribute_hidden; extern void _dl_x86_probe_popcnt (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, POPCNT), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, POPCNT),
_dl_x86_probe_popcnt); _dl_x86_probe_popcnt);
extern void _dl_x86_probe_sse3 (void) attribute_hidden; extern void _dl_x86_probe_sse3 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, SSE3), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, SSE3),
_dl_x86_probe_sse3); _dl_x86_probe_sse3);
extern void _dl_x86_probe_sse4_1 (void) attribute_hidden; extern void _dl_x86_probe_sse4_1 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, SSE4_1), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, SSE4_1),
_dl_x86_probe_sse4_1); _dl_x86_probe_sse4_1);
extern void _dl_x86_probe_sse4_2 (void) attribute_hidden; extern void _dl_x86_probe_sse4_2 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, SSE4_2), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, SSE4_2),
_dl_x86_probe_sse4_2); _dl_x86_probe_sse4_2);
extern void _dl_x86_probe_ssse3 (void) attribute_hidden; extern void _dl_x86_probe_ssse3 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, SSSE3), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, SSSE3),
_dl_x86_probe_ssse3); _dl_x86_probe_ssse3);
/* x86-64-v3 features. */ /* x86-64-v3 features. */
extern void _dl_x86_probe_avx (void) attribute_hidden; extern void _dl_x86_probe_avx (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX),
_dl_x86_probe_avx); _dl_x86_probe_avx);
/* AVX probe using xmm registers. */ /* AVX probe using xmm registers. */
extern void _dl_x86_probe_avx_xmm (void) attribute_hidden; extern void _dl_x86_probe_avx_xmm (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX),
_dl_x86_probe_avx_xmm); _dl_x86_probe_avx_xmm);
extern void _dl_x86_probe_avx2 (void) attribute_hidden; extern void _dl_x86_probe_avx2 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX2), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX2),
_dl_x86_probe_avx2); _dl_x86_probe_avx2);
extern void _dl_x86_probe_bmi1 (void) attribute_hidden; extern void _dl_x86_probe_bmi1 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, BMI1), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, BMI1),
_dl_x86_probe_bmi1); _dl_x86_probe_bmi1);
/* Alternative BMI1 probe. Perhaps harder to mask. */ /* Alternative BMI1 probe. Perhaps harder to mask. */
extern void _dl_x86_probe_bmi1_tzcnt (void) attribute_hidden; extern void _dl_x86_probe_bmi1_tzcnt (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, BMI1), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, BMI1),
_dl_x86_probe_bmi1_tzcnt); _dl_x86_probe_bmi1_tzcnt);
extern void _dl_x86_probe_bmi2 (void) attribute_hidden; extern void _dl_x86_probe_bmi2 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, BMI2), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, BMI2),
_dl_x86_probe_bmi2); _dl_x86_probe_bmi2);
extern void _dl_x86_probe_f16c (void) attribute_hidden; extern void _dl_x86_probe_f16c (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, F16C), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, F16C),
_dl_x86_probe_f16c); _dl_x86_probe_f16c);
extern void _dl_x86_probe_fma (void) attribute_hidden; extern void _dl_x86_probe_fma (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, FMA), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, FMA),
_dl_x86_probe_fma); _dl_x86_probe_fma);
/* FMA4 is not part of x86-64-v3, but may produce a useful hint. */ /* FMA4 is not part of x86-64-v3, but may produce a useful hint. */
extern void _dl_x86_probe_fma4 (void) attribute_hidden; extern void _dl_x86_probe_fma4 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, FMA4), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, FMA4),
_dl_x86_probe_fma4); _dl_x86_probe_fma4);
extern void _dl_x86_probe_lzcnt (void) attribute_hidden; extern void _dl_x86_probe_lzcnt (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, LZCNT), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, LZCNT),
_dl_x86_probe_lzcnt); _dl_x86_probe_lzcnt);
extern void _dl_x86_probe_movbe (void) attribute_hidden; extern void _dl_x86_probe_movbe (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, MOVBE), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, MOVBE),
_dl_x86_probe_movbe); _dl_x86_probe_movbe);
extern void _dl_x86_probe_osxsave (void) attribute_hidden; extern void _dl_x86_probe_osxsave (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, OSXSAVE), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, OSXSAVE),
_dl_x86_probe_osxsave); _dl_x86_probe_osxsave);
/* x86-64-v4 features. */ /* x86-64-v4 features. */
extern void _dl_x86_probe_avx512f (void) attribute_hidden; extern void _dl_x86_probe_avx512f (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512F), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512F),
_dl_x86_probe_avx512f); _dl_x86_probe_avx512f);
extern void _dl_x86_probe_avx512bw (void) attribute_hidden; extern void _dl_x86_probe_avx512bw (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512BW), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512BW),
_dl_x86_probe_avx512bw); _dl_x86_probe_avx512bw);
extern void _dl_x86_probe_avx512bw_ymm (void) attribute_hidden; extern void _dl_x86_probe_avx512bw_ymm (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512BW), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512BW),
_dl_x86_probe_avx512bw_ymm); _dl_x86_probe_avx512bw_ymm);
extern void _dl_x86_probe_avx512cd (void) attribute_hidden; extern void _dl_x86_probe_avx512cd (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512CD), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512CD),
_dl_x86_probe_avx512cd); _dl_x86_probe_avx512cd);
extern void _dl_x86_probe_avx512cd_ymm0 (void) attribute_hidden; extern void _dl_x86_probe_avx512cd_ymm0 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512CD), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512CD),
_dl_x86_probe_avx512cd_ymm0); _dl_x86_probe_avx512cd_ymm0);
extern void _dl_x86_probe_avx512vl (void) attribute_hidden; extern void _dl_x86_probe_avx512vl (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512VL), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512VL),
_dl_x86_probe_avx512vl); _dl_x86_probe_avx512vl);
/* Other CPU features, not part of microarchitecture levels. */ /* Other CPU features, not part of microarchitecture levels. */
extern void _dl_x86_probe_adx (void) attribute_hidden; extern void _dl_x86_probe_adx (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, ADX), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, ADX),
_dl_x86_probe_adx); _dl_x86_probe_adx);
extern void _dl_x86_probe_aes (void) attribute_hidden; extern void _dl_x86_probe_aes (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AES), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AES),
_dl_x86_probe_aes); _dl_x86_probe_aes);
extern void _dl_x86_probe_aes_avx (void) attribute_hidden; extern void _dl_x86_probe_aes_avx (void) attribute_hidden;
_dl_x86_probe (diag, _dl_x86_probe (diag,
CPU_FEATURE_USABLE_P (cpu_features, AES) CPU_FEATURE_PRESENT_P (cpu_features, AES)
&& CPU_FEATURE_USABLE_P (cpu_features, AVX), && CPU_FEATURE_PRESENT_P (cpu_features, AVX),
_dl_x86_probe_aes_avx); _dl_x86_probe_aes_avx);
extern void _dl_x86_probe_vaes (void) attribute_hidden; extern void _dl_x86_probe_vaes (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, VAES), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, VAES),
_dl_x86_probe_vaes); _dl_x86_probe_vaes);
extern void _dl_x86_probe_sha (void) attribute_hidden; extern void _dl_x86_probe_sha (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, SHA), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, SHA),
_dl_x86_probe_sha); _dl_x86_probe_sha);
extern void _dl_x86_probe_avx512_vbmi (void) attribute_hidden; extern void _dl_x86_probe_avx512_vbmi (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_VBMI), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_VBMI),
_dl_x86_probe_avx512_vbmi); _dl_x86_probe_avx512_vbmi);
extern void _dl_x86_probe_avx512_vbmi_xmm (void) attribute_hidden; extern void _dl_x86_probe_avx512_vbmi_xmm (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_VBMI), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_VBMI),
_dl_x86_probe_avx512_vbmi_xmm); _dl_x86_probe_avx512_vbmi_xmm);
extern void _dl_x86_probe_avx512_vbmi2 (void) attribute_hidden; extern void _dl_x86_probe_avx512_vbmi2 (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_VBMI2), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_VBMI2),
_dl_x86_probe_avx512_vbmi2); _dl_x86_probe_avx512_vbmi2);
extern void _dl_x86_probe_avx512_vbmi2_xmm (void) attribute_hidden; extern void _dl_x86_probe_avx512_vbmi2_xmm (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_VBMI2), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_VBMI2),
_dl_x86_probe_avx512_vbmi2_xmm); _dl_x86_probe_avx512_vbmi2_xmm);
extern void _dl_x86_probe_avx_vnni (void) attribute_hidden; extern void _dl_x86_probe_avx_vnni (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX_VNNI), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX_VNNI),
_dl_x86_probe_avx_vnni); _dl_x86_probe_avx_vnni);
extern void _dl_x86_probe_avx512_vnni (void) attribute_hidden; extern void _dl_x86_probe_avx512_vnni (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_VNNI), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_VNNI),
_dl_x86_probe_avx512_vnni); _dl_x86_probe_avx512_vnni);
extern void _dl_x86_probe_avx512_ifma (void) attribute_hidden; extern void _dl_x86_probe_avx512_ifma (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, AVX512_IFMA), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, AVX512_IFMA),
_dl_x86_probe_avx512_ifma); _dl_x86_probe_avx512_ifma);
/*
report both CPU_FEATURE_PRESENT_P and CPU_FEATURE_USABLE_P.
clearer xsave diagnostics
serialize serialize
tpause tpause
ptwrite ptwrite
xsusldtrk xsusldtrk
clmul clmul
crc32 crc32
*/
extern void _dl_x86_probe_apx_f (void) attribute_hidden; extern void _dl_x86_probe_apx_f (void) attribute_hidden;
_dl_x86_probe (diag, CPU_FEATURE_USABLE_P (cpu_features, APX_F), _dl_x86_probe (diag, CPU_FEATURE_PRESENT_P (cpu_features, APX_F),
_dl_x86_probe_apx_f); _dl_x86_probe_apx_f);
} }