Re: [PATCH RFC 0/3] Implement Qualcomm TEE IPC and ioctl calls

[Konrad Dybcio]

On 3.07.2024 7:57 AM, Amirreza Zarrabi wrote:
> Qualcomm TEE hosts Trusted Applications (TAs) and services that run in
> the secure world. Access to these resources is provided using MinkIPC.
> MinkIPC is a capability-based synchronous message passing facility. It
> allows code executing in one domain to invoke objects running in other
> domains. When a process holds a reference to an object that lives in
> another domain, that object reference is a capability. Capabilities
> allow us to separate implementation of policies from implementation of
> the transport.
> 
> As part of the upstreaming of the object invoke driver (called SMC-Invoke
> driver), we need to provide a reasonable kernel API and UAPI. The clear
> option is to use TEE subsystem and write a back-end driver, however the
> TEE subsystem doesn't fit with the design of Qualcomm TEE.

I guess a very important question is: how do we test this patchset?

Are there any open-source consumers of this IOCTL?

Konrad