[PATCH v1 1/2] arm64: smccc: add cache clean/invalidate IDs and return codes

[Jonathan Cameron]

On Tue,  2 Jun 2026 08:21:44 +0000
Srirangan Madhavan <smadhavan at nvidia.com> wrote:

> Define SMCCC Arch function IDs for CLEAN_INV_MEMREGION and its ATTRIBUTES
> call, and add RATE_LIMITED/BUSY return codes from DEN0028 for callers that
> need transient error handling.
> 
> Signed-off-by: Srirangan Madhavan <smadhavan at nvidia.com>
Reviewed-by: Jonathan Cameron <jic23 at kernel.org>

I assume beta spec is enough to merge this?  Probably just need
someone from Arm to confirm.  Last time we had this feature and it got
ripped out it only made it to an alpha spec (which is not enough!)

Jonathan