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Date:   Sun, 2 Feb 2020 12:23:44 +0000
From:   Mark Brown <broonie@kernel.org>
To:     Florian Fainelli <f.fainelli@gmail.com>
Cc:     Benjamin GAIGNARD <benjamin.gaignard@st.com>,
        Sudeep Holla <sudeep.holla@arm.com>,
        Mark Rutland <mark.rutland@arm.com>,
        "robh@kernel.org" <robh@kernel.org>,
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Subject: Re: [PATCH v2 0/7] Introduce bus firewall controller framework
Message-ID: <20200202122344.GV3897@sirena.org.uk>
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        Sudeep Holla <sudeep.holla@arm.com>,
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        Loic PALLARDY <loic.pallardy@st.com>,
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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.

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