Re: [RFC PATCH 0/5] hw/arm/virt: Add support for user-creatable nested SMMUv3

[Jason Gunthorpe]

On Thu, Feb 06, 2025 at 02:46:42PM -0800, Nicolin Chen wrote:
> > You'd use the command line information and wouldn't need GET_HW_INFO,
> > it would be complicated
> 
> Do you mean the "-device arm-smmuv3-accel,id=xx" line? This still
> won't give us the host IDR/IIDR register values to probe a vSMMU,
> unless it has a VFIO device assigned to vSMMU's associated PXB in
> that command line?

Yes, put the IDR registers on the command line too.

Nothing from the host should be copied to the guest without the option
to control it through the command line.

Jason