I have an HP Z600 with the following setting:

M/B: Hewlett-Packard - 0B54h

CPU: Intel® Xeon® CPU X5650 @ 2.67GHz

HVM: Enabled

IOMMU: Enabled

Cache: 384 kB, 1536 kB, 12288 kB

Memory: 24 GB (max. installable capacity 24 GB)

Network: bond0: fault-tolerance (active-backup), mtu 1500
 eth0: 1000 Mb/s, full duplex, mtu 1500

Kernel: Linux 4.9.30-unRAID x86_64

BIOS version 6.3

 

I am trying to setup a Windows 10 VM and pass thru one of my graphics cards. 

Sapphire Radeon HD 5750

GeForce 9400 GT

 

With both cards I am getting this error:

internal error: qemu unexpectedly closed the monitor: 2017-06-03T01:30:56.467950Z qemu-system-x86_64: -device vfio-pci,host=28:00.0,id=hostdev0,x-vga=on,bus=pci.0,addr=0x5: vfio: failed to set iommu for container: Operation not permitted
2017-06-03T01:30:56.467998Z qemu-system-x86_64: -device vfio-pci,host=28:00.0,id=hostdev0,x-vga=on,bus=pci.0,addr=0x5: vfio: failed to setup container for group 15
2017-06-03T01:30:56.468006Z qemu-system-x86_64: -device vfio-pci,host=28:00.0,id=hostdev0,x-vga=on,bus=pci.0,addr=0x5: vfio: failed to get group 15
2017-06-03T01:30:56.468026Z qemu-system-x86_64: -device vfio-pci,host=28:00.0,id=hostdev0,x-vga=on,bus=pci.0,addr=0x5: Device initialization failed

 

I have tried both OVMF and SeaBIOS get the same message.

 

I am at a loss at what else to try and if I can not get this to work then I will just use it for docker and running different server OSes. I wanted to try doing some gaming since it has dual xeon processors and 24 GBs of RAM.

step 1- make sure you're passing the audio and video in the vm manager.

 

step 2- verify that the audio and video of the card are the only 2 devices in iommu group 15, identified with their corresponding id (tools tab>system devices)

 

if not, then you will have to try enabling acs override (settings>vm manager, click basic-advanced toggle, enable acs override, reboot.)

 

if the audio/video are still not alone, you will need to post diagnostics (tools>diagnostics) and we'll help you with the next step)

 

 

if they are alone in group 15, then step 3:

 

modify your syslinux.cfg  (via main tab>flash) to the following;

 

append vfio_iommu_type1.allow_unsafe_interrupts=1 initrd=/bzroot

then reboot.

 

if that does not work, then post diagnostics.

Sir or Madam,

I would hug you if I could.  THANK YOU so much!  It took till step 3, but it worked!  I am currently setting up my Windows 10 machine on my monitor through the 5750.  If you could take a moment and explain what that does so I can better understand for the future?  Once again thank you for your help.

the interrupts modification is usually needed on hp servers, some microservers, and i guess now workstations.

 

what the modification does, to the best of my understanding, is allows  system that don't support interrupt remapping to operate in an "unsafe" manner and allow them.

 

I had to use the same on my consumer x58 Asus board running an x5670 cpu, same generation so not surprised.