Thanks Varun.

I think we should put together a document which captures yesterday's session and the feedback from it. The document can then become a formal proposal after people have reviewed it in their own time.

If that makes sense, Varun and I can put together the doc and share it on this mailing list.

On Fri, Jul 15, 2022 at 10:42 AM Varun Wadekar vwadekar@nvidia.com wrote:

Hi Everyone,

We presented a proposal at the Tech Forum yesterday to take the LTS idea forward. The recording link and password are provided below.

This effort is important for the project, and we don’t want to rush into something that is not useful. With holidays and other engagements, we want to provide more time to digest the information and provide feedback. We will schedule another Tech forum discussion in September to hear feedback/concerns/questions.

See you soon!

-Varun

Recording: https://linaro-org.zoom.us/rec/share/wYFz4jQvpLZntYSamyjc5-n_bGNcx_RFm-amEdx... Passcode: NUx82^W=

*From:* Joanna Farley Joanna.Farley@arm.com *Sent:* Wednesday, 22 June 2022 3:05 PM *To:* Varun Wadekar vwadekar@nvidia.com; Okash Khawaja <okash@google.com

...

*Cc:* Matteo Carlini Matteo.Carlini@arm.com; tf-a@lists.trustedfirmware.org *Subject:* Re: [TF-A] Re: Rebooting LTS discussion

*External email: Use caution opening links or attachments*

Hi Everyone,

I learnt today that our peer project (TF-M) are having a similar LTS discussion and have their own LTS Tech forum session tomorrow.

Its an 8am BST(GMT+1) meeting start but I’m told the LTS discussion is mid agenda so expect the discussion on that to start around 8:30am. I’m told it’s an information gathering session rather than a proposal session.

Anyway the Zoom id of the call is below. These are recorded like TF-A sessions and will be uploaded to their Techforum page.

Joanna

*This event has been changed with this note:* "Extending end date"

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*From: *Joanna Farley Joanna.Farley@arm.com *Date: *Tuesday, 21 June 2022 at 18:11 *To: *Varun Wadekar vwadekar@nvidia.com, Okash Khawaja <okash@google.com

...

*Cc: *Matteo Carlini Matteo.Carlini@arm.com, tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org *Subject: *Re: [TF-A] Re: Rebooting LTS discussion

Thanks Varun and Okash. I’ll update Jul 14th invite and add LTS as the discussion area.

*From: *Varun Wadekar vwadekar@nvidia.com *Date: *Tuesday, 21 June 2022 at 17:24 *To: *Joanna Farley Joanna.Farley@arm.com, Okash Khawaja < okash@google.com> *Cc: *Matteo Carlini Matteo.Carlini@arm.com, tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org *Subject: *RE: [TF-A] Re: Rebooting LTS discussion

Hi Joanna,

Thanks for the update. Okash and I would be ready by July 14. We will prepare the slides for the session.

-Varun

*From:* Joanna Farley Joanna.Farley@arm.com *Sent:* Tuesday, 21 June 2022 5:07 PM *To:* Okash Khawaja okash@google.com; Varun Wadekar <vwadekar@nvidia.com

...

*Cc:* Matteo Carlini Matteo.Carlini@arm.com; tf-a@lists.trustedfirmware.org *Subject:* Re: [TF-A] Re: Rebooting LTS discussion

*External email: Use caution opening links or attachments*

Okash, Varun,

Any thoughts when you want to do a LTS TechForum session. 30th June is now taken and the next scheduled one after that is 14th July. We could try and do a special one on 7th July if that’s better.

I’m reliant on you guys to jointly prepare and present a LTS TF-A Tech forum session

Joanna

*From: *Joanna Farley via TF-A tf-a@lists.trustedfirmware.org *Date: *Monday, 6 June 2022 at 13:47 *To: *Okash Khawaja okash@google.com *Cc: *Matteo Carlini Matteo.Carlini@arm.com, tf-a@lists.trustedfirmware.org tf-a@lists.trustedfirmware.org *Subject: *[TF-A] Re: Rebooting LTS discussion

Hi Okash,

The next session after next week is Thursday 30th June at 4pm BST. This is also available with nothing currently scheduled.

Joanna

*From: *Okash Khawaja okash@google.com *Date: *Monday, 6 June 2022 at 13:34 *To: *Joanna Farley Joanna.Farley@arm.com *Cc: *Varun Wadekar vwadekar@nvidia.com, Matteo Carlini < Matteo.Carlini@arm.com>, tf-a@lists.trustedfirmware.org < tf-a@lists.trustedfirmware.org> *Subject: *Re: [TF-A] Re: Rebooting LTS discussion

Hi Joanna and Varun,

Sounds good to me. I will be out of country during next week. After that should be fine.

Thanks,

Okash

On Mon, Jun 6, 2022 at 12:13 PM Joanna Farley Joanna.Farley@arm.com wrote:

Varun, Okash, I believe the two of you have some interest in the LTS topic. Would the two of you be willing to jointly prepare and present a TF-A Tech forum session? The next available session is Thursday 16th June at 4pm BST.

I’m sure there are many definitions of what a LTS release branch is in terms of purpose, content, duration etc. I would expect many platform providers are doing this downstream today and I could imagine there may be variations. Some degree of consensus on how this is managed and resourced would be needed I believe between multiple platform providers who would want to consume this.

It would be good to see issues raised for discussion.

I’m happy to host if the two of you *and any other platform providers interested* can prepare a TF-A session to present to the broader TF-A community.

Thanks

Joanna

*From: *Varun Wadekar via TF-A tf-a@lists.trustedfirmware.org *Date: *Tuesday, 31 May 2022 at 15:23 *To: *Matteo Carlini Matteo.Carlini@arm.com, Okash Khawaja < okash@google.com>, tf-a@lists.trustedfirmware.org < tf-a@lists.trustedfirmware.org> *Subject: *[TF-A] Re: Rebooting LTS discussion

Hi Matteo/Okash,

Thanks for re-starting the discussion. We (NVIDIA) are still interested in the idea and would like to discuss the next steps. I like the idea of a hotfix release, although would propose back-porting fixes to more tags.

A targeted tech forum or another mechanism works for me. I would like to discuss the scope of the activity and the engagement model.

-Varun

-----Original Message----- From: Matteo Carlini Matteo.Carlini@arm.com Sent: Tuesday, 17 May 2022 3:39 PM To: Okash Khawaja okash@google.com; tf-a@lists.trustedfirmware.org Cc: Varun Wadekar vwadekar@nvidia.com; raghu.ncstate@icloud.com Subject: RE: [TF-A] Rebooting LTS discussion

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Hi Okash,

Thanks for rebooting the conversation.

Out of the brainstorming from 1.5 yrs ago, we had this page published with an initial RFC proposal for LTSs:

https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdeveloper.... https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdeveloper.trustedfirmware.org%2Fw%2Ftf_a%2Flts_proposal%2F&data=05%7C01%7Cvwadekar%40nvidia.com%7Ce5d40cabf1974339d87408da54582f7a%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C0%7C637915035963771118%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=2TI2s2b%2Be%2FXjDQAuynanO%2FVJS6j0utEPoifaP4IkXOk%3D&reserved=0

Worth mentioning that, in the meanwhile, the TF-M project has introduced the concept of Hotfix releases (which is a very lightweight process for backporting critical bug fix/security fixes only to the last available tagged release):

https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftf-m-user-... https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftf-m-user-guide.trustedfirmware.org%2Fdocs%2Freleases%2Frelease_process.html&data=05%7C01%7Cvwadekar%40nvidia.com%7Ce5d40cabf1974339d87408da54582f7a%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C0%7C637915035963771118%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=8g6LPhQe3VnkPG2zk8NVKQUSpAQ54H6N6ni7cZWDJFE%3D&reserved=0

I'm curious to hear others' opinion and interest (@Varun, @Raghu ?) to possibly revive this topic in either in a Tech Forum or at a project TSC/Board level.

Thanks Matteo

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