Bug 1000051

Summary: Support only vfio-based device assignment
Product: Red Hat Enterprise Linux 7 Reporter: Alex Williamson <alex.williamson>
Component: qemu-kvmAssignee: Alex Williamson <alex.williamson>
Status: CLOSED DUPLICATE QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.0CC: acathrow, alex.williamson, chayang, fyang, juzhang, michen, shuang, virt-maint, xwei
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-12-04 16:26:26 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: 1000056, 1025880    
Bug Blocks: 720747    

Description Alex Williamson 2013-08-22 14:53:23 UTC 
Description of problem:
legacy KVM device assignment is deprecated.  Support only vfio-based device assignment going forward.

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


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 2 Ademar Reis 2013-11-05 21:47:02 UTC 
I got this from Markus: "As far as I know, the plan is to disable legacy KVM device in the *kernel*, and then close this bug without patching qemu-kvm."

Alex: is that your understanding as well?
Comment 3 Alex Williamson 2013-11-05 22:10:04 UTC 
(In reply to Ademar de Souza Reis Jr. from comment #2)
> I got this from Markus: "As far as I know, the plan is to disable legacy KVM
> device in the *kernel*, and then close this bug without patching qemu-kvm."
> 
> Alex: is that your understanding as well?

Yes, pci-assign should fail gracefully in qemu when it's disabled in the kernel.  libvirt should also favor vfio when configuring a guest, so the only way a user would be exposed to it is to manually configure their guest xml for pci-assign.  We would only need to patch qemu if exposing the pci-assign driver but not having it work is somehow unacceptable.
Comment 4 Alex Williamson 2013-12-04 16:26:26 UTC 

*** This bug has been marked as a duplicate of bug 1025880 ***