[Starlingx-discuss] Support IBRS cpu model.

Sun, Austin austin.sun at intel.com
Wed Nov 14 05:54:21 UTC 2018

Hi All:
     if install StarlingX in compute-node with cpu type  'Skylake-Server-IBRS' ,  it cannot use  'passthrough' type with keyword hw:cpu_model in favor to create instance 
     It will prompt "No valid host was found. There are not enough hosts available. computer-0: (VCpuModelFilter) Host VCPU model Skylake-Server-IBRS required Passthrough Code 501"
     After investigation ,  Libvirt 4.7.0 supports *IBRS (for example IvyBridge-IBRS, Skylake-Server-IBRS)  CPU model , but nova and meta favor does not support *IBRS CPU model yet.  
     I have made patch for nova[0] and glance[1].
      Nova[0] will support *-IBRS type vcpu when select passthrough 
      Glance[1] will add metadata to support *-IBRS in hw:cpu_model
   Please review these PRs.

Austin Sun. 

   [0] https://github.com/starlingx-staging/stx-nova/pull/15
   [1] https://github.com/starlingx-staging/stx-glance/pull/4

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