Red Hat Bugzilla – Bug 1000051
Support only vfio-based device assignment
Last modified: 2013-12-04 11:26:26 EST
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):
Steps to Reproduce:
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?
(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.
*** This bug has been marked as a duplicate of bug 1025880 ***