[vfio-users] intel_iommu=on breaks audio on haswell cpu

[Le anonymous faker]

Lė Patrick 🚗👔☀ Sneida:
Hey there,

just recently I discovered that the kernel command line "intel_iommu=on" breaks audio output (glitching/freezing output via laptop speakers, no output at all via HDMI) for owners of haswell cpu's. 
Changing it to "intel_iommu=igfx_off" resolved the issue.
How ever, in order to use PCI passthrough of my NVIDIA Card to VirtualBox, I need the parameter "intel_immou=on" ?

Is there a way to fix the audio glitching with intel_iommu=on ?
Is there a way to get nvidia pci passthrough to working without intel_iommu=on (e.g. intel_iommu=igfx_off) ?

Lots of outputs and other users reporting:
https://bbs.archlinux.org/viewtopic.php?id=204460
https://bugzilla.kernel.org/show_bug.cgi?id=60769

Kind regards !
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