[PATCH v11 3/7] firmware: arm_rmm: Move RSI support out of arch/arm64

[Catalin Marinas]

On Mon, Sep 14, 2026 at 11:35:07AM +0530, Aneesh Kumar K.V (Arm) wrote:
> The RSI SMCCC function IDs describe a firmware ABI and are not arm64
> architecture specific definitions. Follow-up changes need to use them from
> non-arch code, including drivers/firmware/smccc and the Arm CCA guest
> driver.
> 
> Move the complete Realm Service Interface (RSI) implementation from
> arch/arm64 to drivers/firmware/arm_rmm. The RSI SMCCC definitions and
> command helpers are also moved to include/linux so they can be shared by
> architecture code and firmware or driver code. This also keeps the
> firmware interface outside architecture code, as requested [1].
> 
> [1] https://lore.kernel.org/all/agsNO9cc7H-b0H8L@willie-the-truck
> 
> Reviewed-by: Jason Gunthorpe <jgg at nvidia.com>
> Acked-by: Suzuki K Poulose <suzuki.poulose at arm.com>
> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar at kernel.org>

The patch looks alright but always wondered why this and the following
two patches are not first in the series. They look like some almost
independent cleanup randomly in the middle of the SMCCC bus series.

Otherwise,

Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>