[RENOIR] IOMMU error when probing device
04:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c1)
[ 4.354660] iommu ivhd0: AMD-Vi: Event logged [ILLEGAL_DEV_TABLE_ENTRY device=04:00.0 pasid=0x00000 address=0xffad1000 flags=0x0180]
...
[ 4.731766] amdgpu 0000:04:00.0: amdgpu: amdgpu_device_ip_init failed
[ 4.731773] amdgpu 0000:04:00.0: amdgpu: Fatal error during GPU init
AMDGPU works with "iommu=off"