Comment 337 for bug 1958019

Ok,
updated the kernel param, now I have
initrd=\EFI\Pop_OS-b0da9465-3702-45ac-91d3-7ca24016e875\initrd.img root=UUID=b0da9465-3702-45ac-91d3-7ca24016e875 ro quiet loglevel=0 systemd.show_status=false splash pci-stub.ids=8086:a082,8086:a0c8,8086:a0a3,8086:a0a4 intel_iommu=on

Try with or without "iommu=pt"

Still no luck, no hcnag ein the VM.
Note that since I added those 3 more adress from the group to the param, my audio show only "dummy" output in control panel of Linux.

My VM start command is:
#!/bin/bash

_qemu=/opt/qemu/jcs/bin/qemu-system-x86_64

sudo qemu-system-x86_64 -L ~/windows_vm/qemu/pc-bios -enable-kvm -hda win10.img -m 4G -smp 4 -vga std -device vfio-pci,host=0000:00:1f.3,multifunction=on,x-no-mmap=true -trace events=./events.txt -monitor stdio

(In reply to Cameron Berkenpas from comment #322)
> Things are not quite right. You do seem to have the right sound device
> picked out, but you need to pass all the devices.
>
> Here's  your relevant IO group:
> IOMMU Group 11:
>         00:1f.0 ISA bridge [0601]: Intel Corporation Tiger Lake-LP LPC
> Controller [8086:a082] (rev 20)
>         00:1f.3 Multimedia audio controller [0401]: Intel Corporation
> Tiger Lake-LP Smart Sound Technology Audio Controller [8086:a0c8] (rev 20)
>         00:1f.4 SMBus [0c05]: Intel Corporation Tiger Lake-LP SMBus
> Controller [8086:a0a3] (rev 20)
>         00:1f.5 Serial bus controller [0c80]: Intel Corporation Tiger
> Lake-LP SPI Controller [8086:a0a4] (rev 20)
>
> Your kernel command only lists your sound card. It should all of the
> devices in this group.
>
> For example, I have:
> vfio-pci.ids=8086:068d,8086:06c8,8086:06a3,8086:06a4
>
> Yours needs to be:
> vfio-pci.ids=8086:a082,8086:a0c8,8086:a0a3,8086:a0a4
>
> In my experimentation in getting this to work, I also did not set
> "iommu=pt". You might try removing that as well.
>
> > Yeah, here is the results:
> >
> > -Result from script:
> > ./test.sh
> > IOMMU Group 0:
> > 00:00.0 Host bridge [0600]: Intel Corporation 11th Gen Core
> > Processor
> > Host Bridge/DRAM Registers [8086:9a14] (rev 01)
> > IOMMU Group 1:
> > 00:02.0 VGA compatible controller [0300]: Intel Corporation UHD
> > Graphics [8086:9a49] (rev 01)
> > IOMMU Group 2:
> > 00:04.0 Signal processing controller [1180]: Intel Corporation
> > Device
> > [8086:9a03] (rev 01)
> > IOMMU Group 3:
> > 00:06.0 PCI bridge [0604]: Intel Corporation 11th Gen Core
> Processor
> > PCIe Controller [8086:9a09] (rev 01)
> > IOMMU Group 4:
> > 00:07.0 PCI bridge [0604]: Intel Corporation Tiger Lake-LP
> > Thunderbolt
> > PCI Express Root Port #2 [8086:9a27] (rev 01)
> > IOMMU Group 5:
> > 00:08.0 System peripheral [0880]: Intel Corporation Device
> > [8086:9a11]
> > (rev 01)
> > IOMMU Group 6:
> > 00:0d.0 USB controller [0c03]: Intel Corporation Tiger Lake-LP
> > Thunderbolt USB Controller [8086:9a13] (rev 01)
> > 00:0d.3 USB controller [0c03]: Intel Corporation Tiger Lake-LP
> > Thunderbolt NHI #1 [8086:9a1d] (rev 01)
> > IOMMU Group 7:
> > 00:14.0 USB controller [0c03]: Intel Corporation Tiger Lake-LP USB
> > 3.2
> > Gen 2x1 xHCI Host Controller [8086:a0ed] (rev 20)
> > 00:14.2 RAM memory [0500]: Intel Corporation Tiger Lake-LP Shared
> > SRAM
> > [8086:a0ef] (rev 20)
> > IOMMU Group 8:
> > 00:14.3 Network controller [0280]: Intel Corporation Wi-Fi 6 AX201
> > [8086:a0f0] (rev 20)
> > IOMMU Group 9:
> > 00:15.0 Serial bus controller [0c80]: Intel Corporation Tiger
> > Lake-LP
> > Serial IO I2C Controller #0 [8086:a0e8] (rev 20)
> > IOMMU Group 10:
> > 00:16.0 Communication controller [0780]: Intel Corporation Tiger
> > Lake-LP Management Engine Interface [8086:a0e0] (rev 20)
> > IOMMU Group 11:
> > 00:1f.0 ISA bridge [0601]: Intel Corporation Tiger Lake-LP LPC
> > Controller [8086:a082] (rev 20)
> > 00:1f.3 Multimedia audio controller [0401]: Intel Corporation
> Tiger
> > Lake-LP Smart Sound Technology Audio Controller [8086:a0c8] (rev 20)
> > 00:1f.4 SMBus [0c05]: Intel Corporation Tiger Lake-LP SMBus
> > Controller
> > [8086:a0a3] (rev 20)
> > 00:1f.5 Serial bus controller [0c80]: Intel Corporation Tiger
> > Lake-LP
> > SPI Controller [8086:a0a4] (rev 20)
> > IOMMU Group 12:
> > 01:00.0 Non-Volatile memory controller [0108]: Samsung Electronics
> > Co
> > Ltd Device [144d:a809]
> >
> > -cat /proc/cmdline
> > initrd=\EFI\Pop_OS-b0da9465-3702-45ac-91d3-7ca24016e875\initrd.img
> > root=UUID=b0da9465-3702-45ac-91d3-7ca24016e875 ro quiet loglevel=0
> > systemd.show_status=false splash pci-stub.ids=8086:a0c8 iommu=pt
> > intel_iommu=on
> >
> > -The audio controller seems to appear in "Other devices->Multimedia Audio
> > Controller" with the small sign on it telling me there is a problem
> (driver)
> > with it. I checked other device to see if there is something odd but all
> > other
> > stuff seems legit in Device Manager...
> >
> > -Downloaded the driver from Lenovo website and double check it is the good
> > one
> > (there is so much similar name in Lenovo website...). 13S Gen2 ITL
> >
> >
> https://support.lenovo.com/us/en/downloads/ds546687-realtek-audio-driver-for-windows-10-64-bit-thinkbook-13s-g2-itl-thinkbook-14s-g2-itl
> >