Hi Volker, Could you please send me the QEMU command line used to launch your VM, this is in order to check the QEMU arguments/flags, possibly it requires "-cpu host" argument. Thanks. Best regards. Mario. From: von Hoesslin, Volker [Volker.Hoesslin@swsn.de] Sent: Thursday, January 17, 2019 8:23 AM To: starlingx-discuss@lists.starlingx.io Subject: Re: [Starlingx-discuss] cpu mode it is impossible to set a EPIC (or any other AMD) as guest CPU? $ openstack flavor set --property hw:cpu_model=EPYC-IBPB 76609f7b-f0c7-48ca-8c8a-f78481e62cd4 Failed to set flavor property: Invalid hw:cpu_model 'EPYC-IBPB', must be one of: Passthrough, Conroe, Penryn, Nehalem, Westmere, SandyBridge, IvyBridge, Haswell, Broadwell-noTSX, Broadwell, Skylake-Client, Skylake-Server. (HTTP 400) (Request-ID: req-2fda19cc-8e0e-4be8-a8ea-b58fc00358ce) Command Failed: One or more of the operations failed but my compute node seems to support EPIC CPUs? cat /usr/share/libvirt/cpu_map/x86_EPYC-IBRS.xml <cpus> <model name='EPYC-IBPB'> <signature family='23' model='1'/> <vendor name='AMD'/> <feature name='3dnowprefetch'/> .... <feature name='xsavec'/> <feature name='xsaveopt'/> </model> </cpus> some tips for me how to handle this? volker... Von: von Hoesslin, Volker [Volker.Hoesslin@swsn.de] Gesendet: Donnerstag, 17. Januar 2019 15:50 An: starlingx-discuss@lists.starlingx.io Betreff: [Starlingx-discuss] cpu mode hi, my setup has two computes nodes, every node has a dual AMD EPYC 7601 CPU config. how can i bring all the CPU features (AES, SSSE3, ...) to the guest VMs. i have tryed with some flavor-metadata but nothing realy helps, the VMs getting just a little subset of cpu-features. some investigations to the kvm-settings hit me to the facts that my nova config has "cpu_model=none" !? how can i fix that and bring my AMD EPIC CPU to my nova-config?! here is the host /proc/cpuinfo processor : 127 vendor_id : AuthenticAMD cpu family : 23 model : 1 model name : AMD EPYC 7601 32-Core Processor stepping : 2 microcode : 0x8001227 cpu MHz : 1200.000 cache size : 512 KB physical id : 1 siblings : 64 core id : 31 cpu cores : 32 apicid : 127 initial apicid : 127 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 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc art rep_good nopl nonstop_tsc extd_apicid amd_dcm aperfmperf eagerfpu 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 skinit wdt tce topoext perfctr_core perfctr_nb bpext perfctr_l2 cpb hw_pstate retpoline_amd ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 clzero irperf xsaveerptr arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic v_vmsave_vmload vgif overflow_recov succor smca bogomips : 4400.08 TLB size : 2560 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] greez & thx, volker...