Re: [RFC PATCH v1 11/38] KVM: arm64: CCA: register host tsm platform device

Jason Gunthorpe
2025-10-15T16:35:01Z

On Wed, Oct 15, 2025 at 11:19:41AM -0400, James Bottomley wrote:
> This came up for the SVSM as well: we want to expose things that can be
> virtual devices or other resources that the guest discovers. Our
> conclusion was we either needed to share one of the virtual busses
> (like virtio) or do our own svsm bus. The agreement was to implement
> our own bus, but we still haven't got around to it.

I think your own bus only makes sense if there is a structured
general discovery mechanism that can be used to automatically
enumerate the devices to create.

If you are open coding all the discovery via C tests in Linux then aux
bus is probably appropriate..

Jason