Awkward

We use "vfio-pci.ids=1b73" and omitting the ":1100" since we are using "vfio_iommu_type1.allow_unsafe_interrupts=1 iommu=pt". Thank you for your assistance, Gridrunner, I will give that a try. Update: I have noticed that in the VM setting, "Other PCI Devices" no longer see the "USB controller: Fresco Logic FL1100 USB 3.0 Host Controller" as it is now integrated into the "USB Devices", which is now hot pluggable.

I have tried "stubbing the devices", according to "gridrunner", using the new method "vfio-pci". Syslinux Configuration: append vfio-pci.ids=1b73:1100 pcie_acs_override=downstream initrd=/bzroot PCI Devices and IOMMU Groups: IOMMU group 18 [1b73:1100] 03:00.0 USB controller: Fresco Logic FL1100 USB 3.0 Host Controller (rev ff) USB Devices: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 03f0:5607 Hewlett-Packard Bus 001 Device 003: ID 045b:0209 Hitachi, Ltd Bus 001 Device 004: ID 1b1c:1c00 Corsair Bus 001 Device 005: ID 046d:c332 Logitech, Inc. Bus 001 Device 006: ID 1b1c:1b13 Corsair Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 002: ID 045b:0210 Hitachi, Ltd However, I am getting this error when I start my Windows 10 Virtual Machines. Execution error internal error: qemu unexpectedly closed the monitor: 2017-05-10T08:04:34.456440Z qemu-system-x86_64: -device vfio-pci,host=03:00.0,id=hostdev2,bus=pci.0,addr=0x9: vfio: Error: Failed to setup INTx fd: Device or resource busy 2017-05-10T08:04:36.333862Z qemu-system-x86_64: -device vfio-pci,host=03:00.0,id=hostdev2,bus=pci.0,addr=0x9: Device initialization failed Should, I edit my VM XML? <domain type='kvm'> <name>Windows 10 VM2 (Opperational)</name> <uuid>0ceecee2-196e-7ba7-ef43-5cd95ee4143b</uuid> <description>Windows 10 Enterprise X64 1703 RS2</description> <metadata> <vmtemplate xmlns="unraid" name="Windows 10" icon="windows.png" os="windows10"/> </metadata> <memory unit='KiB'>12582912</memory> <currentMemory unit='KiB'>12582912</currentMemory> <memoryBacking> <nosharepages/> </memoryBacking> <vcpu placement='static'>2</vcpu> <cputune> <vcpupin vcpu='0' cpuset='3'/> <vcpupin vcpu='1' cpuset='7'/> </cputune> <os> <type arch='x86_64' machine='pc-i440fx-2.7'>hvm</type> </os> <features> <acpi/> <apic/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='8191'/> <vendor_id state='on' value='none'/> </hyperv> </features> <cpu mode='host-passthrough'> <topology sockets='1' cores='1' threads='2'/> </cpu> <clock offset='localtime'> <timer name='hypervclock' present='yes'/> <timer name='hpet' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/local/sbin/qemu</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source file='/mnt/user/domains/Windows 10 VM2 (Opperational)/vdisk1.img'/> <target dev='hdc' bus='virtio'/> <boot order='1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> <disk type='file' device='disk'> <driver name='qemu' type='raw' cache='writeback'/> <source file='/mnt/user/domains/Windows 10 VM2 (Opperational)/vdisk2.img'/> <target dev='hdd' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/user/isos/iso/windows/en_windows_10_enterprise_version_1703_updated_march_2017_x64_dvd_10189290.iso'/> <target dev='hda' bus='ide'/> <readonly/> <boot order='2'/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/mnt/user/isos/latest-virtio/virtio-win/virtio-win-0.1.135-2/virtio-win-0.1.135.iso'/> <target dev='hdb' bus='ide'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='1'/> </disk> <controller type='usb' index='0' model='nec-xhci'> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </controller> <controller type='pci' index='0' model='pci-root'/> <controller type='ide' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </controller> <interface type='bridge'> <mac address='52:54:00:5c:f3:9a'/> <source bridge='br0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='unix'> <target type='virtio' name='org.qemu.guest_agent.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <hostdev mode='subsystem' type='pci' managed='yes' xvga='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x04' slot='0x00' function='0x1'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x08' function='0x0'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <driver name='vfio'/> <source> <address domain='0x0000' bus='0x03' slot='0x00' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/> </hostdev> <memballoon model='virtio'> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </memballoon> </devices> </domain>