Bug 1093840

Summary: [Tracking] Host capability checks
Product: Red Hat OpenStack Reporter: Stephen Gordon <sgordon>
Component: openstack-novaAssignee: RHOS Maint <rhos-maint>
Status: CLOSED WONTFIX QA Contact: yeylon <yeylon>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: ndipanov, srevivo, yeylon
Target Milestone: ---Keywords: Tracking
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-01-28 20:38:43 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1076959    
Bug Blocks: 1077194    

Description Stephen Gordon 2014-05-02 19:21:21 UTC
Description of problem:

NFV workloads require that all compute nodes have support for second-level address translation services for large pages (Intel's® Extended Page Tables or AMD's® Rapid Virtualisation Indexing) and hardware support for I/O virtualization (IOMMU/AMD-Vi).

These capabilities are common in most modern hardware but may not always be enabled in the BIOS. This functionality must be confirmed at least during deployment if not periodically.

Comment 1 Stephen Gordon 2014-05-02 19:22:18 UTC
EPT/NPT can be exposed today, depending on on host nova/libvirt configuration, and could theoretically be filtered using the capabilities filter. IOMMU is more problematic.