On Tue, 8 Mar 2022, at 7:35 PM, Bronek Kozicki wrote: > On Tue, 8 Mar 2022, at 12:13 PM, Bronek Kozicki wrote: >> On Mon, 7 Mar 2022, at 10:33 PM, Alex Williamson wrote: . . . >> Hello Alex - thanks a lot for your help! >> >> I had no idea about AVIC. I went through all the steps in the guide you >> pointed me to, but it seems my kernels does not want to enable it. I >> think I need your help figuring out why. >> >> The effective kvm_amd parameters are: >> >> root@gdansk /sys/module/kvm_amd/parameters # grep -E '*' * >> avic:N >> dump_invalid_vmcb:N >> intercept_smi:Y >> nested:0 >> npt:Y >> nrips:1 >> pause_filter_count:3000 >> pause_filter_count_grow:2 >> pause_filter_count_max:65535 >> pause_filter_count_shrink:0 >> pause_filter_thresh:128 >> sev:N >> sev_es:N >> vgif:1 >> vls:1 >> > > FWIW My CPU is > > root@gdansk ~ # lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Address sizes: 48 bits physical, 48 bits virtual > Byte Order: Little Endian > CPU(s): 96 > On-line CPU(s) list: 0-95 > Vendor ID: AuthenticAMD > BIOS Vendor ID: Advanced Micro Devices, Inc. > Model name: AMD EPYC 7413 24-Core Processor > BIOS Model name: AMD EPYC 7413 24-Core Processor > > CPU family: 25 > Model: 1 > Thread(s) per core: 2 > Core(s) per socket: 24 > Socket(s): 2 > Stepping: 1 > Frequency boost: enabled > CPU max MHz: 3630.8101 > CPU min MHz: 1500.0000 > BogoMIPS: 5300.12 > 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 rapl pni pclmulqdq monitor > ssse3 fma cx16 pcid 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 invpcid_single hw_pstate > ssbd mba ibrs ibpb stibp vmmcall fsgsbase bmi1 avx2 smep bmi2 invpcid > 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 v_vmsave_vmload vgif v_spec_ctrl umip pku ospke vaes > vpclmulqdq rdpid overflow_recov succor smca > Virtualization: AMD-V > L1d cache: 1.5 MiB (48 instances) > L1i cache: 1.5 MiB (48 instances) > L2 cache: 24 MiB (48 instances) > L3 cache: 256 MiB (8 instances) > NUMA node(s): 2 > NUMA node0 CPU(s): 0-23,48-71 > NUMA node1 CPU(s): 24-47,72-95
OK so it seems avic is not listed in the CPU Flags which is puzzling, since it is almost 10 years old CPU feature and supported in kernels since 5.6 if I read that right. I have send a query to the motherboard manufacturer (Supermicro) in case it needs to be enabled in BIOS, or maybe conflicts with existing settings. B. -- Bronek Kozicki b...@incorrekt.com _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://listman.redhat.com/mailman/listinfo/vfio-users
