glibc: elf/tst-cpu-features-cpuinfo fails on PS5

[Simon Chopin]

The tests elf/tst-cpu-features-cpuinfo fail for x86 variants on amd64 on our PS5 builders.

The tests have been xfailed for now.

Relevant logs:

----------
FAIL: elf/tst-cpu-features-cpuinfo
original exit status 1
Checking HAS_CPU_FEATURE (ACPI):
  HAS_CPU_FEATURE (ACPI): 0
  cpuinfo (acpi): 0
Checking HAS_CPU_FEATURE (ADX):
  HAS_CPU_FEATURE (ADX): 1
  cpuinfo (adx): 1
Checking HAS_CPU_FEATURE (APIC):
  HAS_CPU_FEATURE (APIC): 1
  cpuinfo (apic): 1
Checking HAS_CPU_FEATURE (AES):
  HAS_CPU_FEATURE (AES): 1
  cpuinfo (aes): 1
Checking HAS_CPU_FEATURE (AMX_BF16):
  HAS_CPU_FEATURE (AMX_BF16): 0
  cpuinfo (amx_bf16): 0
Checking HAS_CPU_FEATURE (AMX_INT8):
  HAS_CPU_FEATURE (AMX_INT8): 0
  cpuinfo (amx_int8): 0
Checking HAS_CPU_FEATURE (AMX_TILE):
  HAS_CPU_FEATURE (AMX_TILE): 0
  cpuinfo (amx_tile): 0
Checking HAS_CPU_FEATURE (ARCH_CAPABILITIES):
  HAS_CPU_FEATURE (ARCH_CAPABILITIES): 0
  cpuinfo (arch_capabilities): 0
Checking HAS_CPU_FEATURE (AVX):
  HAS_CPU_FEATURE (AVX): 1
  cpuinfo (avx): 1
Checking HAS_CPU_FEATURE (AVX2):
  HAS_CPU_FEATURE (AVX2): 1
  cpuinfo (avx2): 1
Checking HAS_CPU_FEATURE (AVX512_4FMAPS):
  HAS_CPU_FEATURE (AVX512_4FMAPS): 0
  cpuinfo (avx512_4fmaps): 0
Checking HAS_CPU_FEATURE (AVX512_4VNNIW):
  HAS_CPU_FEATURE (AVX512_4VNNIW): 0
  cpuinfo (avx512_4vnniw): 0
Checking HAS_CPU_FEATURE (AVX512_BF16):
  HAS_CPU_FEATURE (AVX512_BF16): 0
  cpuinfo (avx512_bf16): 0
Checking HAS_CPU_FEATURE (AVX512_BITALG):
  HAS_CPU_FEATURE (AVX512_BITALG): 0
  cpuinfo (avx512_bitalg): 0
Checking HAS_CPU_FEATURE (AVX512_IFMA):
  HAS_CPU_FEATURE (AVX512_IFMA): 0
  cpuinfo (avx512ifma): 0
Checking HAS_CPU_FEATURE (AVX512_VBMI):
  HAS_CPU_FEATURE (AVX512_VBMI): 0
  cpuinfo (avx512vbmi): 0
Checking HAS_CPU_FEATURE (AVX512_VBMI2):
  HAS_CPU_FEATURE (AVX512_VBMI2): 0
  cpuinfo (avx512_vbmi2): 0
Checking HAS_CPU_FEATURE (AVX512_VNNI):
  HAS_CPU_FEATURE (AVX512_VNNI): 0
  cpuinfo (avx512_vnni): 0
Checking HAS_CPU_FEATURE (AVX512_VP2INTERSECT):
  HAS_CPU_FEATURE (AVX512_VP2INTERSECT): 0
  cpuinfo (avx512_vp2intersect): 0
Checking HAS_CPU_FEATURE (AVX512_VPOPCNTDQ):
  HAS_CPU_FEATURE (AVX512_VPOPCNTDQ): 0
  cpuinfo (avx512_vpopcntdq): 0
Checking HAS_CPU_FEATURE (AVX512BW):
  HAS_CPU_FEATURE (AVX512BW): 0
  cpuinfo (avx512bw): 0
Checking HAS_CPU_FEATURE (AVX512CD):
  HAS_CPU_FEATURE (AVX512CD): 0
  cpuinfo (avx512cd): 0
Checking HAS_CPU_FEATURE (AVX512ER):
  HAS_CPU_FEATURE (AVX512ER): 0
  cpuinfo (avx512er): 0
Checking HAS_CPU_FEATURE (AVX512DQ):
  HAS_CPU_FEATURE (AVX512DQ): 0
  cpuinfo (avx512dq): 0
Checking HAS_CPU_FEATURE (AVX512F):
  HAS_CPU_FEATURE (AVX512F): 0
  cpuinfo (avx512f): 0
Checking HAS_CPU_FEATURE (AVX512PF):
  HAS_CPU_FEATURE (AVX512PF): 0
  cpuinfo (avx512pf): 0
Checking HAS_CPU_FEATURE (AVX512VL):
  HAS_CPU_FEATURE (AVX512VL): 0
  cpuinfo (avx512vl): 0
Checking HAS_CPU_FEATURE (BMI1):
  HAS_CPU_FEATURE (BMI1): 1
  cpuinfo (bmi1): 1
Checking HAS_CPU_FEATURE (BMI2):
  HAS_CPU_FEATURE (BMI2): 1
  cpuinfo (bmi2): 1
Checking HAS_CPU_FEATURE (CLDEMOTE):
  HAS_CPU_FEATURE (CLDEMOTE): 0
  cpuinfo (cldemote): 0
Checking HAS_CPU_FEATURE (CLFLUSHOPT):
  HAS_CPU_FEATURE (CLFLUSHOPT): 1
  cpuinfo (clflushopt): 1
Checking HAS_CPU_FEATURE (CLFSH):
  HAS_CPU_FEATURE (CLFSH): 1
  cpuinfo (clflush): 1
Checking HAS_CPU_FEATURE (CLWB):
  HAS_CPU_FEATURE (CLWB): 1
  cpuinfo (clwb): 1
Checking HAS_CPU_FEATURE (CMOV):
  HAS_CPU_FEATURE (CMOV): 1
  cpuinfo (cmov): 1
Checking HAS_CPU_FEATURE (CMPXCHG16B):
  HAS_CPU_FEATURE (CMPXCHG16B): 1
  cpuinfo (cx16): 1
Checking HAS_CPU_FEATURE (CNXT_ID):
  HAS_CPU_FEATURE (CNXT_ID): 0
  cpuinfo (cnxt_id): 0
Checking HAS_CPU_FEATURE (CORE_CAPABILITIES):
  HAS_CPU_FEATURE (CORE_CAPABILITIES): 0
  cpuinfo (core_capabilities): 0
Checking HAS_CPU_FEATURE (CX8):
  HAS_CPU_FEATURE (CX8): 1
  cpuinfo (cx8): 1
Checking HAS_CPU_FEATURE (DCA):
  HAS_CPU_FEATURE (DCA): 0
  cpuinfo (dca): 0
Checking HAS_CPU_FEATURE (DE):
  HAS_CPU_FEATURE (DE): 1
  cpuinfo (de): 1
Checking HAS_CPU_FEATURE (DEPR_FPU_CS_DS):
  HAS_CPU_FEATURE (DEPR_FPU_CS_DS): 0
  cpuinfo (zero_fcs_fds): 0
Checking HAS_CPU_FEATURE (DS):
  HAS_CPU_FEATURE (DS): 0
  cpuinfo (dts): 0
Checking HAS_CPU_FEATURE (DS_CPL):
  HAS_CPU_FEATURE (DS_CPL): 0
  cpuinfo (ds_cpl): 0
Checking HAS_CPU_FEATURE (DTES64):
  HAS_CPU_FEATURE (DTES64): 0
  cpuinfo (dtes64): 0
Checking HAS_CPU_FEATURE (EIST):
  HAS_CPU_FEATURE (EIST): 0
  cpuinfo (est): 0
Checking HAS_CPU_FEATURE (ENQCMD):
  HAS_CPU_FEATURE (ENQCMD): 0
  cpuinfo (enqcmd): 0
Checking HAS_CPU_FEATURE (ERMS):
  HAS_CPU_FEATURE (ERMS): 0
  cpuinfo (erms): 0
Checking HAS_CPU_FEATURE (F16C):
  HAS_CPU_FEATURE (F16C): 1
  cpuinfo (f16c): 1
Checking HAS_CPU_FEATURE (FMA):
  HAS_CPU_FEATURE (FMA): 1
  cpuinfo (fma): 1
Checking HAS_CPU_FEATURE (FMA4):
  HAS_CPU_FEATURE (FMA4): 0
  cpuinfo (fma4): 0
Checking HAS_CPU_FEATURE (FPU):
  HAS_CPU_FEATURE (FPU): 1
  cpuinfo (fpu): 1
Checking HAS_CPU_FEATURE (FSGSBASE):
  HAS_CPU_FEATURE (FSGSBASE): 1
  cpuinfo (fsgsbase): 1
Checking HAS_CPU_FEATURE (FSRM):
  HAS_CPU_FEATURE (FSRM): 0
  cpuinfo (fsrm): 0
Checking HAS_CPU_FEATURE (FXSR):
  HAS_CPU_FEATURE (FXSR): 1
  cpuinfo (fxsr): 1
Checking HAS_CPU_FEATURE (GFNI):
  HAS_CPU_FEATURE (GFNI): 0
  cpuinfo (gfni): 0
Checking HAS_CPU_FEATURE (HLE):
  HAS_CPU_FEATURE (HLE): 0
  cpuinfo (hle): 0
Checking HAS_CPU_FEATURE (HTT):
  HAS_CPU_FEATURE (HTT): 0
  cpuinfo (ht): 0
Checking HAS_CPU_FEATURE (HYBRID):
  HAS_CPU_FEATURE (HYBRID): 0
  cpuinfo (hybrid): 0
Checking HAS_CPU_FEATURE (AMD_IBPB):
  HAS_CPU_FEATURE (AMD_IBPB): 1
  cpuinfo (ibpb): 1
Checking HAS_CPU_FEATURE (AMD_IBRS):
  HAS_CPU_FEATURE (AMD_IBRS): 0
  cpuinfo (ibrs): 0
Checking HAS_CPU_FEATURE (AMD_STIBP):
  HAS_CPU_FEATURE (AMD_STIBP): 1
  cpuinfo (stibp): 1
Checking HAS_CPU_FEATURE (IBT):
  HAS_CPU_FEATURE (IBT): 0
  cpuinfo (ibt): 0
Checking HAS_CPU_FEATURE (INVARIANT_TSC):
  HAS_CPU_FEATURE (INVARIANT_TSC): 0
  cpuinfo (invariant_tsc): 0
Checking HAS_CPU_FEATURE (INVPCID):
  HAS_CPU_FEATURE (INVPCID): 0
  cpuinfo (invpcid): 0
Checking HAS_CPU_FEATURE (L1D_FLUSH):
  HAS_CPU_FEATURE (L1D_FLUSH): 0
  cpuinfo (flush_l1d): 0
Checking HAS_CPU_FEATURE (LAHF64_SAHF64):
  HAS_CPU_FEATURE (LAHF64_SAHF64): 1
  cpuinfo (lahf_lm): 1
Checking HAS_CPU_FEATURE (LM):
  HAS_CPU_FEATURE (LM): 1
  cpuinfo (lm): 1
Checking HAS_CPU_FEATURE (LWP):
  HAS_CPU_FEATURE (LWP): 0
  cpuinfo (lwp): 0
Checking HAS_CPU_FEATURE (LZCNT):
  HAS_CPU_FEATURE (LZCNT): 1
  cpuinfo (abm): 1
Checking HAS_CPU_FEATURE (MCA):
  HAS_CPU_FEATURE (MCA): 1
  cpuinfo (mca): 1
Checking HAS_CPU_FEATURE (MCE):
  HAS_CPU_FEATURE (MCE): 1
  cpuinfo (mce): 1
Checking HAS_CPU_FEATURE (MD_CLEAR):
  HAS_CPU_FEATURE (MD_CLEAR): 0
  cpuinfo (md_clear): 0
Checking HAS_CPU_FEATURE (MMX):
  HAS_CPU_FEATURE (MMX): 1
  cpuinfo (mmx): 1
Checking HAS_CPU_FEATURE (MONITOR):
  HAS_CPU_FEATURE (MONITOR): 0
  cpuinfo (monitor): 0
Checking HAS_CPU_FEATURE (MOVBE):
  HAS_CPU_FEATURE (MOVBE): 1
  cpuinfo (movbe): 1
Checking HAS_CPU_FEATURE (MOVDIRI):
  HAS_CPU_FEATURE (MOVDIRI): 0
  cpuinfo (movdiri): 0
Checking HAS_CPU_FEATURE (MOVDIR64B):
  HAS_CPU_FEATURE (MOVDIR64B): 0
  cpuinfo (movdir64b): 0
Checking HAS_CPU_FEATURE (MPX):
  HAS_CPU_FEATURE (MPX): 0
  cpuinfo (mpx): 0
Checking HAS_CPU_FEATURE (MSR):
  HAS_CPU_FEATURE (MSR): 1
  cpuinfo (msr): 1
Checking HAS_CPU_FEATURE (MTRR):
  HAS_CPU_FEATURE (MTRR): 1
  cpuinfo (mtrr): 1
Checking HAS_CPU_FEATURE (NX):
  HAS_CPU_FEATURE (NX): 1
  cpuinfo (nx): 1
Checking HAS_CPU_FEATURE (OSPKE):
  HAS_CPU_FEATURE (OSPKE): 0
  cpuinfo (ospke): 0
Checking HAS_CPU_FEATURE (PAE):
  HAS_CPU_FEATURE (PAE): 1
  cpuinfo (pae): 1
Checking HAS_CPU_FEATURE (PAGE1GB):
  HAS_CPU_FEATURE (PAGE1GB): 1
  cpuinfo (pdpe1gb): 1
Checking HAS_CPU_FEATURE (PAT):
  HAS_CPU_FEATURE (PAT): 1
  cpuinfo (pat): 1
Checking HAS_CPU_FEATURE (PBE):
  HAS_CPU_FEATURE (PBE): 0
  cpuinfo (pbe): 0
Checking HAS_CPU_FEATURE (PCID):
  HAS_CPU_FEATURE (PCID): 0
  cpuinfo (pcid): 0
Checking HAS_CPU_FEATURE (PCLMULQDQ):
  HAS_CPU_FEATURE (PCLMULQDQ): 1
  cpuinfo (pclmulqdq): 1
Checking HAS_CPU_FEATURE (PCONFIG):
  HAS_CPU_FEATURE (PCONFIG): 0
  cpuinfo (pconfig): 0
Checking HAS_CPU_FEATURE (PDCM):
  HAS_CPU_FEATURE (PDCM): 0
  cpuinfo (pdcm): 0
Checking HAS_CPU_FEATURE (PGE):
  HAS_CPU_FEATURE (PGE): 1
  cpuinfo (pge): 1
Checking HAS_CPU_FEATURE (PKS):
  HAS_CPU_FEATURE (PKS): 0
  cpuinfo (pks): 0
Checking HAS_CPU_FEATURE (PKU):
  HAS_CPU_FEATURE (PKU): 0
  cpuinfo (pku): 0
Checking HAS_CPU_FEATURE (POPCNT):
  HAS_CPU_FEATURE (POPCNT): 1
  cpuinfo (popcnt): 1
Checking HAS_CPU_FEATURE (PREFETCHW):
  HAS_CPU_FEATURE (PREFETCHW): 1
  cpuinfo (3dnowprefetch): 1
Checking HAS_CPU_FEATURE (PSE):
  HAS_CPU_FEATURE (PSE): 1
  cpuinfo (pse): 1
Checking HAS_CPU_FEATURE (PSE_36):
  HAS_CPU_FEATURE (PSE_36): 1
  cpuinfo (pse36): 1
Checking HAS_CPU_FEATURE (PSN):
  HAS_CPU_FEATURE (PSN): 0
  cpuinfo (psn): 0
Checking HAS_CPU_FEATURE (RDPID):
  HAS_CPU_FEATURE (RDPID): 1
  cpuinfo (rdpid): 1
Checking HAS_CPU_FEATURE (RDRAND):
  HAS_CPU_FEATURE (RDRAND): 1
  cpuinfo (rdrand): 1
Checking HAS_CPU_FEATURE (RDSEED):
  HAS_CPU_FEATURE (RDSEED): 1
  cpuinfo (rdseed): 1
Checking HAS_CPU_FEATURE (RDT_A):
  HAS_CPU_FEATURE (RDT_A): 0
  cpuinfo (rdt_a): 0
Checking HAS_CPU_FEATURE (RDT_M):
  HAS_CPU_FEATURE (RDT_M): 0
  cpuinfo (cqm): 0
Checking HAS_CPU_FEATURE (RDTSCP):
  HAS_CPU_FEATURE (RDTSCP): 1
  cpuinfo (rdtscp): 1
Checking HAS_CPU_FEATURE (RTM):
  HAS_CPU_FEATURE (RTM): 0
  cpuinfo (rtm): 0
Checking HAS_CPU_FEATURE (SDBG):
  HAS_CPU_FEATURE (SDBG): 0
  cpuinfo (sdbg): 0
Checking HAS_CPU_FEATURE (SEP):
  HAS_CPU_FEATURE (SEP): 1
  cpuinfo (sep): 1
Checking HAS_CPU_FEATURE (SERIALIZE):
  HAS_CPU_FEATURE (SERIALIZE): 0
  cpuinfo (serialize): 0
Checking HAS_CPU_FEATURE (SGX):
  HAS_CPU_FEATURE (SGX): 0
  cpuinfo (sgx): 0
Checking HAS_CPU_FEATURE (SGX_LC):
  HAS_CPU_FEATURE (SGX_LC): 0
  cpuinfo (sgx_lc): 0
Checking HAS_CPU_FEATURE (SHA):
  HAS_CPU_FEATURE (SHA): 1
  cpuinfo (sha_ni): 1
Checking HAS_CPU_FEATURE (SHSTK):
  HAS_CPU_FEATURE (SHSTK): 0
  cpuinfo (shstk): 0
Checking HAS_CPU_FEATURE (SMAP):
  HAS_CPU_FEATURE (SMAP): 1
  cpuinfo (smap): 1
Checking HAS_CPU_FEATURE (SMEP):
  HAS_CPU_FEATURE (SMEP): 1
  cpuinfo (smep): 1
Checking HAS_CPU_FEATURE (SMX):
  HAS_CPU_FEATURE (SMX): 0
  cpuinfo (smx): 0
Checking HAS_CPU_FEATURE (SS):
  HAS_CPU_FEATURE (SS): 0
  cpuinfo (ss): 0
Checking HAS_CPU_FEATURE (SSE):
  HAS_CPU_FEATURE (SSE): 1
  cpuinfo (sse): 1
Checking HAS_CPU_FEATURE (SSE2):
  HAS_CPU_FEATURE (SSE2): 1
  cpuinfo (sse2): 1
Checking HAS_CPU_FEATURE (SSE3):
  HAS_CPU_FEATURE (SSE3): 1
  cpuinfo (pni): 1
Checking HAS_CPU_FEATURE (SSE4_1):
  HAS_CPU_FEATURE (SSE4_1): 1
  cpuinfo (sse4_1): 1
Checking HAS_CPU_FEATURE (SSE4_2):
  HAS_CPU_FEATURE (SSE4_2): 1
  cpuinfo (sse4_2): 1
Checking HAS_CPU_FEATURE (SSE4A):
  HAS_CPU_FEATURE (SSE4A): 1
  cpuinfo (sse4a): 1
Checking HAS_CPU_FEATURE (SSSE3):
  HAS_CPU_FEATURE (SSSE3): 1
  cpuinfo (ssse3): 1
Checking HAS_CPU_FEATURE (SVM):
  HAS_CPU_FEATURE (SVM): 1
  cpuinfo (svm): 1
Checking HAS_CPU_FEATURE (SYSCALL_SYSRET):
  HAS_CPU_FEATURE (SYSCALL_SYSRET): 1
  cpuinfo (syscall): 1
Checking HAS_CPU_FEATURE (TBM):
  HAS_CPU_FEATURE (TBM): 0
  cpuinfo (tbm): 0
Checking HAS_CPU_FEATURE (TM):
  HAS_CPU_FEATURE (TM): 0
  cpuinfo (tm): 0
Checking HAS_CPU_FEATURE (TM2):
  HAS_CPU_FEATURE (TM2): 0
  cpuinfo (tm2): 0
Checking HAS_CPU_FEATURE (TRACE):
  HAS_CPU_FEATURE (TRACE): 0
  cpuinfo (intel_pt): 0
Checking HAS_CPU_FEATURE (TSC):
  HAS_CPU_FEATURE (TSC): 1
  cpuinfo (tsc): 1
Checking HAS_CPU_FEATURE (TSC_ADJUST):
  HAS_CPU_FEATURE (TSC_ADJUST): 0
  cpuinfo (tsc_adjust): 0
Checking HAS_CPU_FEATURE (TSC_DEADLINE):
  HAS_CPU_FEATURE (TSC_DEADLINE): 0
  cpuinfo (tsc_deadline_timer): 0
Checking HAS_CPU_FEATURE (TSXLDTRK):
  HAS_CPU_FEATURE (TSXLDTRK): 0
  cpuinfo (tsxldtrk): 0
Checking HAS_CPU_FEATURE (UMIP):
  HAS_CPU_FEATURE (UMIP): 1
  cpuinfo (umip): 1
Checking HAS_CPU_FEATURE (VAES):
  HAS_CPU_FEATURE (VAES): 0
  cpuinfo (vaes): 0
Checking HAS_CPU_FEATURE (VME):
  HAS_CPU_FEATURE (VME): 1
  cpuinfo (vme): 1
Checking HAS_CPU_FEATURE (VMX):
  HAS_CPU_FEATURE (VMX): 0
  cpuinfo (vmx): 0
Checking HAS_CPU_FEATURE (VPCLMULQDQ):
  HAS_CPU_FEATURE (VPCLMULQDQ): 0
  cpuinfo (vpclmulqdq): 0
Checking HAS_CPU_FEATURE (WAITPKG):
  HAS_CPU_FEATURE (WAITPKG): 0
  cpuinfo (waitpkg): 0
Checking HAS_CPU_FEATURE (WBNOINVD):
  HAS_CPU_FEATURE (WBNOINVD): 1
  cpuinfo (wbnoinvd): 1
Checking HAS_CPU_FEATURE (X2APIC):
  HAS_CPU_FEATURE (X2APIC): 1
  cpuinfo (x2apic): 1
Checking HAS_CPU_FEATURE (XFD):
  HAS_CPU_FEATURE (XFD): 0
  cpuinfo (xfd): 0
Checking HAS_CPU_FEATURE (XGETBV_ECX_1):
  HAS_CPU_FEATURE (XGETBV_ECX_1): 1
  cpuinfo (xgetbv1): 1
Checking HAS_CPU_FEATURE (XOP):
  HAS_CPU_FEATURE (XOP): 0
  cpuinfo (xop): 0
Checking HAS_CPU_FEATURE (XSAVE):
  HAS_CPU_FEATURE (XSAVE): 1
  cpuinfo (xsave): 1
Checking HAS_CPU_FEATURE (XSAVEC):
  HAS_CPU_FEATURE (XSAVEC): 1
  cpuinfo (xsavec): 1
Checking HAS_CPU_FEATURE (XSAVEOPT):
  HAS_CPU_FEATURE (XSAVEOPT): 1
  cpuinfo (xsaveopt): 1
Checking HAS_CPU_FEATURE (XSAVES):
  HAS_CPU_FEATURE (XSAVES): 1
  cpuinfo (xsaves): 1
Checking HAS_CPU_FEATURE (XTPRUPDCTRL):
  HAS_CPU_FEATURE (XTPRUPDCTRL): 0
  cpuinfo (xtpr): 0
Checking CPU_FEATURE_USABLE (FSGSBASE):
  CPU_FEATURE_USABLE (FSGSBASE): 0
  cpuinfo (fsgsbase): 1
 *** failure ***
1 differences between /proc/cpuinfo and glibc code.
----------

[Michael Hudson-Doyle (mwhudson)]

As can be seen here (https://launchpad.net/~mwhudson/+archive/ubuntu/devirt/+build/22621733), elf/tst-cpu-features-cpuinfo fails on the current (fairly new) launchpad builders. The failure is:

Checking HAS_CPU_FEATURE (WBNOINVD):
  HAS_CPU_FEATURE (WBNOINVD): 1
  cpuinfo (wbnoinvd): 0
 *** failure ***

/proc/cpuinfo is:

processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 49
model name : AMD EPYC-Rome Processor
stepping : 0
microcode : 0x1000065
cpu MHz : 2499.998
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm rep_good nopl xtopology cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm svm cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw topoext perfctr_core ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves clzero xsaveerptr arat npt nrip_save umip rdpid
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips : 4999.99
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management:

[Martin Liska (mliska)]

I guess it's related to Linux kernel version.
I likely have the very same CPU:

$ cat /proc/cpuinfo | head -n100
processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 49
model name : AMD EPYC 7702 64-Core Processor
stepping : 0
microcode : 0x8301025
cpu MHz : 3343.026
cache size : 512 KB
physical id : 0
siblings : 128
core id : 0
cpu cores : 64
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 16
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_llc mwaitx cpb cat_l3 cdp_l3 hw_pstate ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 cqm rdt_a rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local clzero irperf xsaveerptr rdpru wbnoinvd amd_ppin arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif umip rdpid overflow_recov succor smca
bugs : sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass
bogomips : 3992.68
TLB size : 3072 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm hwpstate cpb eff_freq_ro [13] [14]

$ uname -a
Linux benzen 5.12.9-1-default #1 SMP Thu Jun 3 07:44:58 UTC 2021 (f17eb01) x86_64 x86_64 x86_64 GNU/Linux

And as seen, 'wbnoinvd' is present in the flags.

[Simon Chopin (schopin)]

This had been reported upstream by Michael:

https://sourceware.org/bugzilla/show_bug.cgi?id=28692

[Michael Hudson-Doyle (mwhudson)]

FWIW my impression when I last thought about this was that this test is likely going to be a source of continual whack-a-mole failures and we should just leave it xfailed. But maybe you should look into this and see if you come to the same conclusion :-)

[Simon Chopin (schopin)]

> FWIW my impression when I last thought about this was that this test is
> likely going to be a source of continual whack-a-mole failures and we
> should just leave it xfailed. But maybe you should look into this and
> see if you come to the same conclusion :-)

Nah, I trust you on that, I just created the bug to have a record of you
saying that :D