On Mon, Mar 7, 2016 at 10:34 AM, Stein van Broekhoven <st...@aapjeisbaas.nl> wrote:
> Dear All, > > I can't get the video card which is using vfio to connect to my vm: > lspci -nnk > 06:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. > [AMD/ATI] Turks XT [Radeon HD 6670/7670] [1002:6758] > Subsystem: ASUSTeK Computer Inc. Device [1043:03ea] > Kernel driver in use: vfio-pci > Kernel modules: radeon, fglrx > 06:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] > Turks/Whistler HDMI Audio [Radeon HD 6000 Series] [1002:aa90] > Subsystem: ASUSTeK Computer Inc. Device [1043:aa90] > Kernel driver in use: vfio-pci > Kernel modules: snd_hda_intel > > I start the vm from cli with qemu command with sudo > The devices 06:00.0 and 06:00.1 are together in group 22 > I added /dev/vfio/22 to acl in qemu config > You should never need to touch this acl list, besides it's for libvirt which you're not using if you're using the qemu command. > When using vfio_iommu_type1.allow_unsafe_interrupts=1 on start vm I get > the error: > stdout: > qemu-system-x86_64: -device > vfio-pci,host=06:00.0,addr=09.0,multifunction=on: vfio: Error: Failed to > setup INTx fd: Device or resource busy > qemu-system-x86_64: -device > vfio-pci,host=06:00.0,addr=09.0,multifunction=on: Device initialization > failed > dmesg: > genirq: Flags mismatch irq 55. 00000080 (vfio-intx(0000:06:00.0)) vs. > 00000800 (fglrx[1]@PCI:6:0:0) > > Without vfio_iommu_type1.allow_unsafe_interrupts=1 on start vm I get the > error: > stdout: > vfio: failed to set iommu for container: Operation not permitted > dmesg: > vfio_iommu_type1_attach_group: No interrupt remapping support. Use the > module param "allow_unsafe_interrupts" to enable VFIO IOMMU support on this > platform > > system: > sabertooth 990FX v1.1 > AMD FX-8120 > main GPU: Radeon HD 5xxx > VM GPU: Radeon HD 6xxx > Manjaro (arch) kernel 4.1 > looks like fglrx is still holding onto the IRQ and there's a flags mismatch, you should prevent fglrx from claiming the GPU by using pci-stub or vfio-pci to claim the device directly. 990FX should support interrupt remapping, so it's likely not enabled in your kernel.
_______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
