[TF-M] Re: psa_call performance

I also observed psa_connect() call time is now ~6000 cycles (previously ~3400 cycles in TF-M v1.1).

Regards, Brian

From: Quach, Brian via TF-M tf-m@lists.trustedfirmware.org Sent: Wednesday, April 26, 2023 12:56 PM To: tf-m@lists.trustedfirmware.org Subject: [EXTERNAL] [TF-M] psa_call performance

Hi,

Using isolation level 1 and IPC secure partition, I noticed psa_call() overhead for TFM v1.7 is significantly worse for than v1.1. Is this expected?

Assuming 1 invec and 0 outvec for the PSA call....

TF-M version

Psa_call() round trip cycles

v1.1

4038

v1.7

6051

Regards,

Brian Quach SimpleLink MCU Texas Instruments Inc.