mjhjmtu

Im running a Windows 10 VM using qemu version 2.10.1 on kernel 4.14.1 with a GPU passed through. I can also pass through an Intel-based USB controller. So far so good.

My Intel USB controller does not support resetting which is causing issues. I have another onboard USB controller - ASMedia based. Supposedly it supports resetting:

IOMMU group 12
[RESET] 04:00.0 USB controller [0c03]: ASMedia Technology Inc. Device [1b21:2142]

But when i try to pass it, instead of my intel one, the VM is unable to boot. 'dmesg' gives me:

[ 389.368990] device vnet0 entered promiscuous mode
[ 389.369151] virbr0: port 2(vnet0) entered blocking state
[ 389.369153] virbr0: port 2(vnet0) entered forwarding state
[ 390.360933] vfio-pci 0000:01:00.0: enabling device (0000 -> 0003)
[ 390.361265] vfio_ecap_init: 0000:01:00.0 hiding ecap 0x19@0x900
[ 391.444984] pcieport 0000:00:1c.4: AER: Uncorrected (Non-Fatal) error received: id=00e4
[ 391.444999] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, id=00e4(Requester ID)
[ 391.445007] pcieport 0000:00:1c.4: device [8086:a294] error status/mask=00100000/00010000
[ 391.445012] pcieport 0000:00:1c.4: [20] Unsupported Request (First)
[ 391.445017] pcieport 0000:00:1c.4: TLP Header: 34000000 04000010 00000000 17ff17ff
[ 391.445027] pcieport 0000:00:1c.4: broadcast error_detected message
[ 391.445034] pcieport 0000:00:1c.4: broadcast mmio_enabled message
[ 391.445036] pcieport 0000:00:1c.4: broadcast resume message
[ 391.445041] pcieport 0000:00:1c.4: AER: Device recovery successful
[ 391.445153] vfio_ecap_init: 0000:04:00.0 hiding ecap 0x19@0x200
[ 393.781020] pcieport 0000:00:1c.4: AER: Uncorrected (Non-Fatal) error received: id=00e4
[ 393.781033] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Uncorrected (Non-Fatal), type=Transaction Layer, id=00e4(Requester ID)
[ 393.781041] pcieport 0000:00:1c.4: device [8086:a294] error status/mask=00100000/00010000
[ 393.781047] pcieport 0000:00:1c.4: [20] Unsupported Request (First)
[ 393.781052] pcieport 0000:00:1c.4: TLP Header: 34000000 04000010 00000000 17ff17ff
[ 393.781061] pcieport 0000:00:1c.4: broadcast error_detected message
[ 393.781079] pcieport 0000:00:1c.4: broadcast mmio_enabled message
[ 393.781082] pcieport 0000:00:1c.4: broadcast resume message

Both of the USB controllers are in their own IOMMU group which they dont share with anything else

Why is this happening? Is the ASMedia missing some required hardware feature i dont know about?