KVM: My Processor has Disabled Vulnerabilities

English Virtualization
1

I wanted to know based on my Processor Vulnerabilities,

Architecture:            x86_64
  CPU op-mode(s):        32-bit, 64-bit
  Address sizes:         39 bits physical, 48 bits virtual
  Byte Order:            Little Endian
CPU(s):                  8
  On-line CPU(s) list:   0-7
Vendor ID:               GenuineIntel
  BIOS Vendor ID:        Intel(R) Corporation
  Model name:            Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz
    BIOS Model name:     Intel(R) Core(TM) i7-9700 CPU @ 3.00GHz To Be Filled By O.E.M. CPU @ 2.9GHz
    BIOS CPU family:     198
    CPU family:          6
    Model:               158
    Thread(s) per core:  1
    Core(s) per socket:  8
    Socket(s):           1
    Stepping:            13
    CPU(s) scaling MHz:  17%
    CPU max MHz:         4700.0000
    CPU min MHz:         800.0000
    BogoMIPS:            6000.00
    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 syscall nx pdpe1gb rdtscp lm constant_tsc ar
                         t arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid 
                         sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault invpcid_single ssbd ibrs ibpb stibp ibrs_enhanc
                         ed tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1
                          xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d arch_capabilities
Virtualization features: 
  Virtualization:        VT-x
Caches (sum of all):     
  L1d:                   256 KiB (8 instances)
  L1i:                   256 KiB (8 instances)
  L2:                    2 MiB (8 instances)
  L3:                    12 MiB (1 instance)
NUMA:                    
  NUMA node(s):          1
  NUMA node0 CPU(s):     0-7
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 disabled
  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 IBRS, IBPB conditional, RSB filling, PBRSB-eIBRS SW sequence
  Srbds:                 Mitigation; Microcode
  Tsx async abort:       Mitigation; TSX disabled

regarding,

Itlb multihit:         KVM: Mitigation: VMX disabled
Mmio stale data:       Mitigation; Clear CPU buffers; SMT disabled
Tsx async abort:       Mitigation; TSX disabled

can these be enabled, and if so how?

2

@nasheayahu They are not disabled, the ‘Mitigation’ is to disable those in the BIOS.

1 Like
3

I see, and I shall do that, thanks!..