On Fri, Jan 31, 2020 at 12:48:33PM -0800, Florian Fainelli wrote:

Like Robin and Sudeep here, I do not understand why the kernel should
have any business in this, let alone allowing blocks to change owners,
that sounds contrary to the purpose of a firewall being controlled under
an untrusted entity (Linux).

Can we rely on there being a more trusted level of software than
Linux on a system?  It wasn't standard to have anything on 32 bit
Arm systems as far as I remember so you could end up with some IP
blocks intended to support TrustZone sitting idle.