failed to assign iommu device!

Kishore Kanala

Can someone let me know how to overcome this problem? I am trying this

Loading ACRN hypervisor with SDC scenario ...
error: Can't get controller info..
Multiboot Bootloader: GRUB 2.02-2ubuntu8.21
ACRN Hypervisor
calibrate_tsc, tsc_khz=2591442
[4589978us][cpu=0][(null)][sev=2][seq=1]:HV version 2.5-unstable-2021-05-06 20:06:44-7c92ac425 DBG (daily tag:acrn-2021w18.5-180000p) sdc@qemu build by kishore, start time 4579269us
[4591202us][cpu=0][(null)][sev=2][seq=2]:API version 1.0
[4591568us][cpu=0][(null)][sev=2][seq=3]:Detect processor: Intel(R) Core(TM) i7-9750H CPU @ 2.60GHz
[4908926us][cpu=0][(null)][sev=1][seq=18]:PANIC: assign_vdev_pt_iommu_domain line: 296

[4909856us][cpu=0][(null)][sev=1][seq=19]:failed to assign iommu device!

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