Hi,

On Wed, 19 Aug 2020 at 13:20, Dan Handley via TSC <tsc@lists.trustedfirmware.org> wrote:

Hi

 

Regarding the CHERI adaptation of Hafnium, I think we'll need to understand the purpose, status and plans for this before we can consider the technical/legal aspects. Joakim – do you have that info?

Unfortunately I don't have that much background information, since there is an agreement between the various companies that have been working with it (Linaro is not one of them). So, I'm a bit of a messenger here in an early stage, trying to start a discussion around it. Due to this I've already discussed with Robert N. M. Watson (University of Cambridge) and I've suggested that we could invite him to one of our TSC calls and he could explain more about it and after that it should be easier to make a decision whether this is something the TF TSC would consider being worked on or not. But before inviting people outside the TSC I thought it'd be good to have a brief discussion within the TSC itself.

Regards,
Joakim
 

 

Regards

 

Dan.

 

 

From: TSC <tsc-bounces@lists.trustedfirmware.org> On Behalf Of Serban Constantinescu via TSC
Sent: 19 August 2020 11:25
To: Joakim Bech <joakim.bech@linaro.org>; Andrew Walbran <qwandor@google.com>
Cc: tsc@lists.trustedfirmware.org
Subject: Re: [TF-TSC] Request for TSC agenda topics 2020-08-20

 

+Andrew Walbran in case he has any opinions on the CHERI proposal below.

 

Hi Joakim,

 

On Tue, Aug 18, 2020 at 6:01 PM Joakim Bech via TSC <tsc@lists.trustedfirmware.org> wrote:

Hi,

 

If there is enough time, then I would like to discuss OP-TEE release work, questions like: Who will make the release? When should it be done? Where should it be tracked? Currently, the answer to all of those are more or less "Linaro / Linaro decides", but our (Linaro's) impression is that we should try to get this transferred to TrustedFirmware in some way. Linaro will certainly be involved in that kind of work in the future also, but we believe that the directions should come from TrustedFirmware.org instead of Linaro. This might even be something to consider for all TF projects? I.e., not only OP-TEE? But again .. if time permits, otherwise we can push it to another call.

 

A second topic is related to CHERI [1] and Hafnium. People working with the CHERI project asked me whether TrustedFirmware would be interested in an open-source CHERI adaptation of Hafnium? So I'd like to get the opinion from the TSC with regards to that. If the TSC is positive to it, then we have a few other things to consider like where it should go, separate CHERI branch(es), official tree with compile time flags? How to staff the activity? Legal aspects? Etc.

 

Leaving aside the legal aspects which Arm and TF should express a view on, I suggest we first review the CHERI changes. 

 

If they don't put in danger any of the product deadlines and do not increase the code significantly we could consider incorporating them as part of the official tree.  However, I believe the changes are based on an old Hafnium fork and add a non-trivial amount of new code - if that's the case a separate branch is a better option to start with.

 

Best,

Serban

 

 


Regards,

Joakim

 

 

On Mon, 17 Aug 2020 at 15:55, Bill Fletcher via TSC <tsc@lists.trustedfirmware.org> wrote:

Hi Dan

 

I can give an update on the website rework.

 

Regards

 

Bill

 

On Mon, 17 Aug 2020 at 12:47, Dan Handley via TSC <tsc@lists.trustedfirmware.org> wrote:

Hi all

 

I'll be chairing the TSC meeting this Thursday. Does anyone have any agenda topics for then?

 

So far I have:

 

* Continuation of Groups.io discussion

 

* Continuation of GitHub/GitLab discussion

 

Regards


Dan.

 

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Bill Fletcher | Field Engineering

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bill.fletcher@linaro.org | Skype: billfletcher2020

 

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