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

Jason Gunthorpe
2025-10-15T12:15:35Z

On Wed, Oct 15, 2025 at 01:57:38PM +0200, Greg KH wrote:

> If this really is a firmware thing, and you have a firmware device, then
> I am confused why this was even brought up at all? Use a real platform
> device, with the resources that are needed to talk to this platform
> device and you should be fine.

I think the issue today is the PSCI does not always get a
platform_device, fixing that seems straightforward then all the
downstream things can switch from using more platform devices to using
an aux device with the PSCI as the parent..

> BUT, if you are making child devices that are NOT actually talking to
> the firmware,

This thread is about how to bind various subsystems to this shared
firmware interface.

Jason