[PATCH v4 2/2] coco: guest: arm64: Drop dummy RSI platform device stub

[Catalin Marinas]

+ Suzuki again

On Mon, Apr 27, 2026 at 11:46:15AM +0530, Aneesh Kumar K.V (Arm) wrote:
> The SMCCC firmware driver now creates the `arm-smccc` platform device
> and also creates the CCA auxiliary devices once the RSI ABI is
> discovered. This makes the arch-specific arm64_create_dummy_rsi_dev()
> helper redundant. Remove the arm-cca-dev platform device registration
> and let the SMCCC probe manage the RSI device.
> 
> systemd match on platform:arm-cca-dev for confidential vm detection [1].
> Losing the platform device registration can break that. Keeping this
> removal in its own change makes it easy to revert if that regression
> blocks the rollout.
> 
> [1] https://lore.kernel.org/all/4a7d84b2-2ec4-4773-a2d5-7b63d5c683cf@arm.com

I wouldn't merge this now given that systemd checks this file. Could we
have a symbolic link instead for some time until systemd eventually gets
updated (years?).

-- 
Catalin