Hi guys,

 

I'm trying to pass through a USB-controller as I've had issues with passing just the USB-unit to my VM. I'm following this guide by Spaceinvare1, and found out I had to buy a PCI-controller as all my other controllers were in IOMMU groups with devices I couldn't pass.

 

So I've updated my config to look like this, and have edited the VM to pass the PCI-device. I rebooted the server after editing the config.
 

default /syslinux/menu.c32
menu title Lime Technology, Inc.
prompt 0
timeout 50
label unRAID OS
  menu default
  kernel /bzimage
  append vfio-pci.ids=1912:0015 initrd=/bzroot
label unRAID OS GUI Mode
  kernel /bzimage
  append initrd=/bzroot,/bzroot-gui
label unRAID OS Safe Mode (no plugins, no GUI)
  kernel /bzimage
  append initrd=/bzroot unraidsafemode
label unRAID OS GUI Safe Mode (no plugins)
  kernel /bzimage
  append initrd=/bzroot,/bzroot-gui unraidsafemode
label Memtest86+
  kernel /memtest

Unfortunately, when starting the VM I get the following error in the log:

2017-09-11T07:54:01.555885Z qemu-system-x86_64: -device vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x6: vfio: failed to set iommu for container: Operation not permitted
2017-09-11T07:54:01.555915Z qemu-system-x86_64: -device vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x6: vfio: failed to setup container for group 19
2017-09-11T07:54:01.555931Z qemu-system-x86_64: -device vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x6: vfio: failed to get group 19
2017-09-11T07:54:01.555947Z qemu-system-x86_64: -device vfio-pci,host=05:00.0,id=hostdev0,bus=pci.0,addr=0x6: Device initialization failed
2017-09-11 07:54:01.596+0000: shutting down, reason=failed

 

Why can't this device be initialized?

 

EDIT: Just to be clear. The only device in IOMMU group 19 is the controller I'm trying to pass.

 

Thanks!

Edited September 11, 20178 yr by Fredrick

I found a solution, my current config looks like this, and seems to work well.

 

default /syslinux/menu.c32
menu title Lime Technology, Inc.
prompt 0
timeout 50
label unRAID OS
  menu default
  kernel /bzimage
  append vfio_iommu_type1.allow_unsafe_interrupts=1 pcie_acs_override=downstream vfio-pci.ids=1912:0015 initrd=/bzroot
label unRAID OS GUI Mode
  kernel /bzimage
  append pcie_acs_override=downstream initrd=/bzroot,/bzroot-gui
label unRAID OS Safe Mode (no plugins, no GUI)
  kernel /bzimage
  append pcie_acs_override=downstream initrd=/bzroot unraidsafemode
label unRAID OS GUI Safe Mode (no plugins)
  kernel /bzimage
  append pcie_acs_override=downstream initrd=/bzroot,/bzroot-gui unraidsafemode
label Memtest86+
  kernel /memtest