Hi,
On 13/12/2023 11:32, Jens Wiklander wrote:
>
>
> Until now has an unsupported FF-A request been reported back with
NIT: I think 'has' is in the wrong place
> ARM_SMCCC_ERR_UNKNOWN_FUNCTION in register x0. A FF-A caller would
> rather expect FFA_ERROR in x0 and FFA_RET_NOT_SUPPORTED in x2 so update
> ffa_handle_call() to return true and with the cpu_user_regs updated.
>
> Fixes: 38846de2176b ("xen/arm: tee: add a primitive FF-A mediator")
> Signed-off-by: Jens Wiklander <[email protected]>
Looking at Linux and TFA, this is indeed expected behavior, so:
Reviewed-by: Michal Orzel <[email protected]>
~Michal
