Bug 1299678

Summary: Nova support for Intel Cache Allocation Technology
Product: Red Hat OpenStack Reporter: Karen Noel <knoel>
Component: openstack-novaAssignee: Eoghan Glynn <eglynn>
Status: CLOSED DUPLICATE QA Contact: nlevinki <nlevinki>
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: berrange, dasmith, dyuan, eglynn, juzhang, kchamart, lhuang, mkletzan, mtosatti, pezhang, rbalakri, sbauza, sferdjao, sgordon, srevivo, virt-bugs, vromanso, xfu
Target Milestone: ---Keywords: FutureFeature, Triaged
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: 1289368 Environment:
Last Closed: 2017-07-25 14:31:23 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1288964, 1289368, 1547015    
Bug Blocks: 1412215    

Description Karen Noel 2016-01-19 00:36:40 UTC 
+++ This bug was initially created as a clone of Bug #1289368 +++

Kernel support for CAT requires libvirt support:

Bug 1288964 - [Intel 7.3 FEAT] Enable Cache Allocation Technology (CAT)
Comment 2 Sahid Ferdjaoui 2016-01-19 15:58:48 UTC 
A spec will have to be addressed, after a first look this feature needs some work in several components of Nova to maintain/schedule/consume host's cache. I can work on that spec and implementation it when libvirt will provides information about cache and feature to use it for guests.
Comment 5 Kashyap Chamarthy 2017-01-06 15:03:02 UTC 
After having a quick chat with the Real Time folks Rik van Riel, and 
Luiz Capitulino, A quick summary of current status.  There are a couple
of things at play here.

 - Kernel. The Kernel infrastructure is ready and merged upstream.  And
   there's work in-progress to get these patches into RHEL
 
 - Integration into virtualization stack -- libvirt to provide an API.

 - Once libvirt provides the API to configure cache reservation, then it
   can be exposed in OpenStack Nova.


About the feature itself:
https://software.intel.com/en-us/articles/introduction-to-cache-allocation-technology
Comment 6 Stephen Gordon 2017-07-25 14:31:23 UTC 

*** This bug has been marked as a duplicate of bug 1411864 ***