On Fri, 04 Sep 2026 15:20:00 +0530, Aneesh Kumar K.V (Arm) [off-list ref] wrote:
The SMCCC firmware driver now creates the arm-smccc platform device and
instantiates the CCA RSI auxiliary devices once the RSI ABI is discovered.
The arm64-specific arm-cca-dev platform device stub is therefore no longer
needed.
However, userspace has used the arm-cca-dev platform device to detect Arm
CCA Realm guests [1]. Removing it without a replacement would break that
detection and would also leave userspace depending on kernel device-model
details.
[...]
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
--
Jason