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Bug 1306239

Summary:	VFIO: missing documentation for VFIO enabling procedure on PPC platforms.
Product:	[oVirt] ovirt-engine	Reporter:	Nisim Simsolo <nsimsolo>
Component:	BLL.Virt	Assignee:	Martin Polednik <mpoledni>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Nisim Simsolo <nsimsolo>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	3.6.3	CC:	bugs, hannsj_uhl, mavital, michal.skrivanek, nsimsolo
Target Milestone:	ovirt-3.6.4	Flags:	michal.skrivanek: ovirt-3.6.z? rule-engine: planning_ack? michal.skrivanek: devel_ack+ rule-engine: testing_ack?
Target Release:	---
Hardware:	ppc
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Release Note
Doc Text:	The special procedure to enble vfio passthrough through boot command line is not required on POWER. please make sure doc is aligned	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-02-10 13:00:12 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Virt	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1201513

Description Nisim Simsolo 2016-02-10 11:45:11 UTC

Description of problem:

Currently, there is no specific procedure that describes how to enable PCI passthrough on PPC platforms.
Browsing feature page http://www.ovirt.org/Features/hostdev_passthrough does not show any reference for PPC platforms.
Preconditions that needs to be clarified before enabling PCI passthrough:
1. Should it be enabled in BIOS level or not? if so, what should be enabled (in intel for example, vt-d must be enabled).
2. Should IOMMU be enabled at grub or not? if so, what is the line should be entered? (in intel for example, intel_iommu=on must be set).
3. In case of GPU passthrough, should it be unbinded from host kernel driver and binded to pci-stub driver?

Comment 1 Martin Polednik 2016-02-10 13:00:12 UTC

Wiki has been updated to reflect the steps requires (= no steps required) to set the feature up.