Bug 1025474

Summary:	Nvidia GPU device assignment - qemu-kvm - NoSnoop support
Product:	Red Hat Enterprise Linux 7	Reporter:	Alex Williamson <alex.williamson>
Component:	qemu-kvm	Assignee:	Alex Williamson <alex.williamson>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.0	CC:	acathrow, chayang, hannsj_uhl, hhuang, juzhang, michen, virt-maint
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-1.5.3-17.el7	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-13 09:38:11 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:
Bug Depends On:	1025470
Bug Blocks:	987658, 1032793, 1032795, 1291981

Description Alex Williamson 2013-10-31 19:01:37 UTC

Description of problem:
Nvidia graphics cards can make use of NoSnoop transactions which bypass processor cache.  KVM needs to emulate instructions like WBINVD when NoSnoop is possible.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
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Actual results:


Expected results:


Additional info:

Comment 2 Miroslav Rezanina 2013-11-07 15:56:55 UTC

Fix included in qemu-kvm-1.5.3-17.el7

Comment 5 juzhang 2014-03-03 06:30:44 UTC

Please notes:

1.QE does not test Telsa card since we do not get this card from Nvidia.
2. "NVIDIA GPU Device Assignment Red Hat Enterprise Linux 7.0 Beta supports device assignment of NVIDIA professional series graphics devices (GRID and 
Quadro) as a secondary graphics device to emulated VGA.",According to last comment in bz987658's Doc Text, Telsa is not mentioned. 
3. QE will consider test telas card as well if we get the card from nvidia timely(before snapshot10). Free to update your comment as well.

Comment 7 Ludek Smid 2014-06-13 09:38:11 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

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