[root@dell-per740-78 ~]# virsh save avocado-vt-vm1 ./avocado-vt-vm1.save1
Domain 'avocado-vt-vm1' saved to ./avocado-vt-vm1.save1
[root@dell-per740-78 ~]# virsh restore ./avocado-vt-vm1.save1 
error: Failed to restore domain from ./avocado-vt-vm1.save1
error: operation failed: domain is not running

 [root@dell-per740-78 ~]# virsh save avocado-vt-vm1 ./avocado-vt-vm1.save1

Domain 'avocado-vt-vm1' saved to ./avocado-vt-vm1.save1

[root@dell-per740-78 ~]# virsh restore ./avocado-vt-vm1.save1 
error: Failed to restore domain from ./avocado-vt-vm1.save1
error: operation failed: domain is not running

2024-01-16T11:13:37.586851Z qemu-kvm: Failed to put registers after init: Invalid argument
2024-01-16 11:13:37.790+0000: shutting down, reason=crashed

# lscpu
Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         46 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  40
  On-line CPU(s) list:   0-39
Vendor ID:               GenuineIntel
  BIOS Vendor ID:        Intel
  Model name:            Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz
    BIOS Model name:     Intel(R) Xeon(R) Silver 4210 CPU @ 2.20GHz
    CPU family:          6
    Model:               85
    Thread(s) per core:  2
    Core(s) per socket:  10
    Socket(s):           2
    Stepping:            7
    CPU max MHz:         3200.0000
    CPU min MHz:         1000.0000
    BogoMIPS:            4400.00
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe s
                         yscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf p
                         ni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popc
                         nt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single in
                         tel_ppin ssbd mba ibrs ibpb stibp ibrs_enhanced tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 sme
                         p bmi2 erms invpcid cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xs
                         aveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts hwp hwp_act_window
                          hwp_epp hwp_pkg_req vnmi pku ospke avx512_vnni md_clear flush_l1d arch_capabilities
Virtualization features: 
  Virtualization:        VT-x
Caches (sum of all):     
  L1d:                   640 KiB (20 instances)
  L1i:                   640 KiB (20 instances)
  L2:                    20 MiB (20 instances)
  L3:                    27.5 MiB (2 instances)
NUMA:                    
  NUMA node(s):          2
  NUMA node0 CPU(s):     0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38
  NUMA node1 CPU(s):     1,3,5,7,9,11,13,15,17,19,21,23,25,27,29,31,33,35,37,39
Vulnerabilities:         
  Gather data sampling:  Mitigation; Microcode
  Itlb multihit:         KVM: Mitigation: VMX disabled
  L1tf:                  Not affected
  Mds:                   Not affected
  Meltdown:              Not affected
  Mmio stale data:       Mitigation; Clear CPU buffers; SMT vulnerable
  Retbleed:              Mitigation; Enhanced IBRS
  Spec rstack overflow:  Not affected
  Spec store bypass:     Mitigation; Speculative Store Bypass disabled via prctl
  Spectre v1:            Mitigation; usercopy/swapgs barriers and __user pointer sanitization
  Spectre v2:            Mitigation; Enhanced / Automatic IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence
  Srbds:                 Not affected
  Tsx async abort:       Mitigation; TSX disabled