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Fix SSE unit size for Zen 2 CPUs

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Related to #125
This commit is contained in:
Xorg 2019-07-11 22:29:27 +02:00
parent 5aedd53624
commit bf7f57f519
2 changed files with 12 additions and 3 deletions
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13
libcpuid/recog_amd.c
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@ -344,9 +344,18 @@ static void load_amd_features(struct cpu_raw_data_t* raw, struct cpu_id_t* data)
if (raw->ext_cpuid[0][0] >= 0x80000007) if (raw->ext_cpuid[0][0] >= 0x80000007)
match_features(matchtable_edx87, COUNT_OF(matchtable_edx87), raw->ext_cpuid[7][3], data); match_features(matchtable_edx87, COUNT_OF(matchtable_edx87), raw->ext_cpuid[7][3], data);
if (raw->ext_cpuid[0][0] >= 0x8000001a) { if (raw->ext_cpuid[0][0] >= 0x8000001a) {
/* We have the extended info about SSE unit size */ /* We have the extended info about SSE unit size
Extracted from BKDG, about CPUID_Fn8000001A_EAX [Performance Optimization Identifiers] (Core::X86::Cpuid::PerfOptId):
- bit 2: FP256
- bit 1: MOVU
- bit 0: FP128 */
data->detection_hints[CPU_HINT_SSE_SIZE_AUTH] = 1; data->detection_hints[CPU_HINT_SSE_SIZE_AUTH] = 1;
data->sse_size = (raw->ext_cpuid[0x1a][0] & 1) ? 128 : 64; if ((raw->ext_cpuid[0x1a][0] >> 2) & 1)
data->sse_size = 256;
else if ((raw->ext_cpuid[0x1a][0]) & 1)
data->sse_size = 128;
else
data->sse_size = 64;
} }
} }

2
tests/amd/zen2/ryzen5-matisse.test
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@ -73,6 +73,6 @@ ext_cpuid[31]=0001000f 0000016f 000001fd 00000001
64 64
64 64
-1 -1
64 (authoritative) 256 (authoritative)
Ryzen 5 (Matisse) Ryzen 5 (Matisse)
fpu vme de pse tsc msr pae mce cx8 apic mtrr sep pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht pni pclmul monitor ssse3 cx16 sse4_1 sse4_2 syscall movbe popcnt aes xsave osxsave avx mmxext nx fxsr_opt rdtscp lm lahf_lm cmp_legacy svm abm misalignsse sse4a 3dnowprefetch osvw ibs skinit wdt ts ttp tm_amd hwpstate constant_tsc fma3 f16c rdrand cpb aperfmperf avx2 bmi1 bmi2 fpu vme de pse tsc msr pae mce cx8 apic mtrr sep pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht pni pclmul monitor ssse3 cx16 sse4_1 sse4_2 syscall movbe popcnt aes xsave osxsave avx mmxext nx fxsr_opt rdtscp lm lahf_lm cmp_legacy svm abm misalignsse sse4a 3dnowprefetch osvw ibs skinit wdt ts ttp tm_amd hwpstate constant_tsc fma3 f16c rdrand cpb aperfmperf avx2 bmi1 bmi2