Hi Kevin,

Thanks for the link to the presentation 😊

I guess, then, Feder Liang, as the author of the presentation, should be able to provide some feedback on the questions I raised?

Once more, I am stressing that our questions concern the usage of FPU in Non-Secure applications that integrate with TF-M today; it is not about future improvements for FPU support inside TF-M, which was (I guess) the main point of this presentation.

Best,

Ioannis

From: Kevin Townsend <kevin.townsend@linaro.org>
Sent: Wednesday, April 21, 2021 8:03 PM
To: Glaropoulos, Ioannis <Ioannis.Glaropoulos@nordicsemi.no>
Cc: tf-m@lists.trustedfirmware.org
Subject: Re: [TF-M] Supporting integrated Non-Secure RTOS applications that use the FPU

On Wed, 21 Apr 2021 at 18:56, Glaropoulos, Ioannis via TF-M <tf-m@lists.trustedfirmware.org> wrote:

I would like to ask the community whether these issues have been raised in the past – and if so, please, inform me what the conclusions have been. Are there current activities that attempt to address the problems raised above? Not been able to fully utilize the FP context stacking in Non-Secure Zephyr applications that integrate with TF-M removes value of our TF-M based solutions.

Thanks! I am looking forward to hearing the thoughts of the community.

Hi Ioannis,

The previous technical forum call did discuss FP usage ... I don't think you were on the call at the time, but the presentation and video can be viewed here, and should point to the people to follow up with here on the mailing list of on phabricator, etc.

Presentation: https://www.trustedfirmware.org/docs/FP-support-in-TF-M.pdf

Video link(s) available here: https://www.trustedfirmware.org/meetings/tf-m-technical-forum/

Best rehards,

Kevin