linux-kernel - Re: [PATCH v8 0/4] Introduce TEE based Trusted Keys support

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Message-ID: <20201106145252.GA10434@kernel.org>
Date:   Fri, 6 Nov 2020 16:52:52 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Sumit Garg <sumit.garg@...aro.org>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        James Bottomley <jejb@...ux.ibm.com>,
        David Howells <dhowells@...hat.com>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        Janne Karhunen <janne.karhunen@...il.com>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Markus Wamser <Markus.Wamser@...ed-mode.de>,
        Luke Hinds <lhinds@...hat.com>,
        "open list:ASYMMETRIC KEYS" <keyrings@...r.kernel.org>,
        linux-integrity@...r.kernel.org,
        "open list:SECURITY SUBSYSTEM" 
        <linux-security-module@...r.kernel.org>,
        Linux Doc Mailing List <linux-doc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        op-tee@...ts.trustedfirmware.org
Subject: Re: [PATCH v8 0/4] Introduce TEE based Trusted Keys support

On Fri, Nov 06, 2020 at 03:02:41PM +0530, Sumit Garg wrote:
> On Thu, 5 Nov 2020 at 10:37, Jarkko Sakkinen <jarkko@...nel.org> wrote:
> >
> > On Tue, Nov 03, 2020 at 09:31:42PM +0530, Sumit Garg wrote:
> > > Add support for TEE based trusted keys where TEE provides the functionality
> > > to seal and unseal trusted keys using hardware unique key. Also, this is
> > > an alternative in case platform doesn't possess a TPM device.
> > >
> > > This patch-set has been tested with OP-TEE based early TA which is already
> > > merged in upstream [1].
> >
> > Is the new RPI400 computer a platform that can be used for testing
> > patch sets like this? I've been looking for a while something ARM64
> > based with similar convenience as Intel NUC's, and on the surface
> > this new RPI product looks great for kernel testing purposes.
> 
> Here [1] is the list of supported versions of Raspberry Pi in OP-TEE.
> The easiest approach would be to pick up a supported version or else
> do an OP-TEE port for an unsupported one (which should involve minimal
> effort).
> 
> [1] https://optee.readthedocs.io/en/latest/building/devices/rpi3.html#what-versions-of-raspberry-pi-will-work
> 
> -Sumit

If porting is doable, then I'll just order RPI 400, and test with QEMU
up until either I port OP-TEE myself or someone else does it.

For seldom ARM testing, RPI 400 is really convenient device with its
boxed form factor.

/Jarkko