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Wed, Apr 7

adrianlshaw added a comment to Twin-cpu.

Hi Martin. I was referring to PSA FF-M, not FF-A. See the spec here, in Section 2.1.

Wed, Apr 7, 1:37 PM

Tue, Apr 6

adrianlshaw added a comment to Twin-cpu.

If the NSPE can use all the ARMv8-M processors, then it makes sense to use a model similar to ARMv8-A. In that model, the request for a secure service is usually handled by the local core - no cross core interaction.

Tue, Apr 6, 3:34 PM

Fri, Apr 2

adrianlshaw added a comment to Twin-cpu.

Hi David. What about a scenario where non-secure applications want to use both cores? I think this is what Martin is asking about. Dedicating one M33 to act as a secure enclave can be considered a waste of compute resource (it will be idle most of the time).

Fri, Apr 2, 5:32 PM

Sep 5 2019

adrianlshaw created T488: Constant time variant of memcmp().
Sep 5 2019, 4:10 PM