I am trying to do audio passthrough with qemu. I have tried this before as well and it was working fine. Now when I launch qemu with graphics and audio passthrough, I am getting below error message and qemu launch is failing.
qemu-system-x86_64: iommu has granularity incompatible with target AS
qemu-system-x86_64: iommu map to non memory area 80000000
qemu-system-x86_64: iommu map to non memory area c0000000
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qemu-system-x86_64: iommu map to non memory area fed68000Aborted
After this it’s aborting. With graphics passthrough alone, qemu launch is fine . Same way I M trying to do audio passthrough also (have taken care of unbinding other components in same iommu group of audio and attaching to vfio ). Any suggestions?