On 06/20/2013 03:30 AM, Mario Ceresa wrote:
> Dear all,
> does anybody know if it is currently possible to do GPU passthrough in kvm? I
> have access to a dual Quadro 4000 setup and I would like to pass the second
> one to kvm for use in a VM.
>
> I read a lot on internet and it seems feasible [1, 2, 3] and there is even a
> reported success case [5].
>
> However when I start the VM the host reboots with PCIe error 928: Completion
> timeout.
>
> My current setup is:
>
> * Fedora 18 with 3.9.4-200 x86_64
> * dmesg | grep -e DMAR -e IOMMU shows that they are both enabled
> * nvidia driver installed from rpmfusion
> * I use vfio assignment as per [4]
>
> Thanks and regards,
>
> Mario
>
>
> [1] http://www.linux-kvm.org/page/VGA_device_assignment
> [2] https://bbs.archlinux.org/viewtopic.php?id=162768
> [3]
> http://samos-it.com/removedetach-a-pci-device-linux-kvm-vga-passthrgough-nvidia-quadro-2000/
> [4]
> https://fedoraproject.org/wiki/QA:Testcase_Virtualization_KVM_PCI_Device_Assignment
> [5]
> http://tavi-tech.blogspot.com.es/2012/05/vga-passthrough-kvm-fedora-17-and.html
>

CC-ing Alex (the VFIO guy)

What qemu and libvirt versions are you using?

- Cole