PCI passthrough: vfio-pci ignores ids of devices

I have 3 GPUs in my dual XEON server. I followed instructions on Arch wiki and set up vfio-pci with ids=10de:100c,10de:0e1a: $ modprobe -c | grep vfio options vfio_iommu_type1 allow_unsafe_interrupts=1 options vfio_pci ids=10de:100c,10de:0e1a ... But according to dmesg vfio ignores that option: [ 1.278976] VFIO - User Level meta-driver version: 0.3 [ 1.306193] vfio_pci: add [1002:7142[ffff:ffff]] class 0x000000/00000000 [ 1.326139] vfio_pci: add [1002:7162[ffff:ffff]] class 0x000000/00000000 Moreover when I unplugged card with 1002:7142 and 1002:7162 devices on-board and reboot I still have such entries in dmesg output and no more! I upgraded linux kernel version and vfio_pci started to add another card but still independent in ids option! I don't know what to do to resolve that problem. I want to setup certain GPU to be add as vfio_pci device. I don't even know where to look. List of GPUs: #IOMMU group 17 # 02:00.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X] [1002 :6798] # 02:00.1 Audio device : Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT HDMI Audio [Radeon HD 7970 Series] [1002:aaa0] #IOMMU group 18 # 03:00.0 VGA compatible controller : NVIDIA Corporation GK110B [GeForce GTX TITAN Black] [10de:100c] (rev a1) # 03:00.1 Audio device : NVIDIA Corporation GK110 HDMI Audio [10de:0e1a] (rev a1) #IOMMU group 30 # 83:00.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] RV515 PRO [Radeon X1300/X1550 Series] [1002:7142] # 83:00.1 Display controller : Advanced Micro Devices, Inc. [AMD/ATI] RV515 PRO [Radeon X1300/X1550 Series] (Secondary) [1002:7162] Modprobe settings: $ cat /etc/modprobe.d/vfio.conf options vfio-pci ids=10de:100c,10de:0e1a Linux version: $ uname -a Linux localhost 4.4.21-1-lts #1 SMP Thu Sep 15 20:38:36 CEST 2016 x86_64 GNU/Linux