[Users] VM migrate failed Host CPU does not provide required features: hle, rtm, rdseed...

[jehan procaccia TEM-TSP]

Hello

when I tried to migrate a VM  from on virtuozzo 7 host to an other one I
get a CPU capabilities not provided by destination

# prlctl  migrate myVM root at olympos -v 16
Logging in
...
security_level=2
PrlCleanup::register_hook: 8780700
EVENT type=100030
Migration started.
EVENT type=100001
EVENT type=100033
Operation progress ...98%EVENT type=100033
Operation progress    100%
EVENT type=100033
Operation progress ... 0%EVENT type=100031
Migration cancelled!
EVENT type=100007
EVENT type=100001

Failed to migrate the VM: Operation failed. Failed to execute the
operation. (Details: the CPU is incompatible with host CPU: Host CPU
does not provide *required features: hle, rtm, rdseed, adx, smap,
3dnowprefetch*)
resultCount: 0
PrlCleanup::unregister_hook: 8780700
Logging off

indeed those capabilities don't show up in the lshw on the destination
host (cf PS below )

alhtough myVM doesn't seem to require those capabilities :

# virsh edit myVM
...

  <os>
    <type arch='x86_64' machine='pc-i440fx-vz7.7.0'>hvm</type>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
    <vmcoreinfo state='on'/>
  </features>
  <cpu mode='host-model' check='partial'>
    <model fallback='allow'>Skylake-Client-IBRS</model>
    <topology sockets='1' cores='2' threads='1'/>
  *  <feature policy='require' name='ss'/>**
**    <feature policy='require' name='hypervisor'/>**
**    <feature policy='require' name='tsc_adjust'/>**
**    <feature policy='require' name='ssbd'/>**
**    <feature policy='require' name='stibp'/>**
**    <feature policy='require' name='pdpe1gb'/>*
    <feature policy='disable' name='arat'/>
    <feature policy='disable' name='xgetbv1'/>
    <feature policy='disable' name='vmx'/>
    <feature policy='disable' name='xsavec'/>
    <feature policy='disable' name='mpx'/>
  </cpu>

1) Is it libvirt or virtuozzo (prlctl) that complains about that ?

2) how can I tell it to forget about those capabilities ?

3) should I edit myVM properties with virsh edit or prlct or virt-manager ?

4) are they all compatible (on can read change done by the other ) ?

Thanks .

PS : CPU hardware capabilities on source host :

# lshw 
    description: Rack Mount Chassis
    product: PowerEdge R730 (SKU=NotProvided;ModelName=PowerEdge R730)
    vendor: Dell Inc.
    serial: 63NXMK2
    width: 64 bits
    capabilities: smbios-2.8 dmi-2.8 smp vsyscall32
 *-cpu:0
          description: CPU
          product: Intel(R) Xeon(R) CPU E5-2620 v4 @ 2.10GHz
 capabilities: lm fpu fpu_exception wp 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 x86-64 constant_tsc arch_perfmon
pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu
cpuid_faulting pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3
sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch
epb cat_l3 cdp_l3 intel_pt ssbd ibrs ibpb stibp tpr_shadow vnmi
flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms
invpcid rtm cqm rdt_a *rdseed *adx smap xsaveopt cqm_llc cqm_occup_llc
cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts spec_ctrl
intel_stibp flush_l1d cpufreq
          configuration: cores=8 enabledcores=8 threads=16

on destination (rdseed not listed)

# lshw   
    description: Rack Mount Chassis
    product: PowerEdge R430 (SKU=NotProvided;ModelName=PowerEdge R430)
    vendor: Dell Inc.
    serial: DKYSJD2
    width: 64 bits
    capabilities: smbios-2.8 dmi-2.8 smp vsyscall32
  *-cpu:0
          description: CPU
          product: Intel(R) Xeon(R) CPU E5-2609 v3 @ 1.90GHz
          vendor: Intel Corp.
      
          capabilities: lm fpu fpu_exception wp 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 x86-64 constant_tsc
arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf
eagerfpu cpuid_faulting pni pclmulqdq dtes64 monitor ds_cpl vmx smx est
tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe
popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm epb ssbd
ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase
tsc_adjust bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc
cqm_occup_llc dtherm arat pln pts spec_ctrl intel_stibp flush_l1d cpufreq
          configuration: cores=6 enabledcores=6 threads=6

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