[Starlingx-discuss] Support IBRS cpu model.

[Xie, Cindy]

Austin,
Is this bug related to your finding?

https://bugs.launchpad.net/starlingx/+bug/1801773

thx. - cindy

-----Original Message-----
From: Sun, Austin [mailto:austin.sun at intel.com] 
Sent: Wednesday, November 14, 2018 1:54 PM
To: 'starlingx-discuss at lists.starlingx.io' <starlingx-discuss at lists.starlingx.io>
Cc: He, Zhiwei <zhiwei.he at intel.com>
Subject: [Starlingx-discuss] Support IBRS cpu model.

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.

Thanks.
BR
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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