On Mon, Jan 08, 2018 at 04:25:52AM +0000, Chaitanya Kulkarni wrote: > Hi Fangjian, > > > In my config I don't have COMFIG_ARM_SMMU* enabled, the test system I have is x86_64. Try intel_iommu=force if it's an Intel system, or look up the AMD option for AMD systems.