This event has been canceled.
TF-A Tech Forum
Thursday 1 Jun 2023 ⋅ 11am – 12pm
Eastern Time - Toronto
Topic: SVE Enablement in RMM for Realms. Presenter: Arunachalam
GanapathyOverview: This discussion will cover the design and implementation
details on how SVE and FP/AdvSIMD state of Non secure world and Realms are
managed by RMM.=====================We run an open technical forum call for
anyone to participate and it is not restricted to Trusted Firmware project
members. It will operate under the guidance of the TF TSC. Feel free to
forward this invite to colleagues. Invites are via the TF-A mailing list
and also published on the Trusted Firmware website. Details are
here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/Trusted
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This event has been canceled.
TF-A Tech Forum
Thursday 23 Mar 2023 ⋅ 12pm – 1pm
Eastern Time - Toronto
Discussion Topic: RAS Refactoring Presented by: Manish Pandey and Soby
MathewTopics to be discussed 1. Introduction to philosophies of handling
RAS errors(FFH/KFH) 2. Discussing exceptions caused by synchronization
barriers at execption boundries 3. Refactoring and enhancements in
TF-A(along with various build macros) 4. Tests introduced 5. Future
work----------------We run an open technical forum call for anyone to
participate and it is not restricted to Trusted Firmware project members.
It will operate under the guidance of the TF TSC. Feel free to forward this
invite to colleagues. Invites are via the TF-A mailing list and also
published on the Trusted Firmware website. Details are
here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/Trusted
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Hi,
You must have noticed slowness or breakages with review.trustedfirmware.org or git.trustedfirmware.org during the week.
There are high and lows of network bandwidth usage affecting server availability.
The issue is being investigated but not yet 100% root caused.
Apologies for the frustration and inconvenience that this is causing.
Rest assured the team is on board to resolve this unfortunate situation.
Regards,
Olivier.
Hi Everyone
As discussed in TF-A Tech Forum in January, RMM is introducing EL0 app support which is deprivileging parts of RMM to run at EL0. This is done mainly for security but it also enables other capabilities as discussed in the presentation : https://github.com/TF-RMM/tf-rmm/wiki/TFA-Tech-Forum-Presentations
The patch stack can be accessed here : https://review.trustedfirmware.org/c/TF-RMM/tf-rmm/+/36886/1 . This is complex functionality touching many parts of RMM. The merge is likely to affect outstanding patches as they would have merge conflict on rebase. We have identified further enhancements and hardening which can be done to improve the security and performance of the EL0 app framework . These will be taken up after the merge.
We are hoping to merge this patch stack early next week so that any issues identified can be fixed up prior to TF-A v2.13 release planned for next month. The design document is still undergoing review and will be progressed after the merge of functionality.
Best Regards
Soby Mathew
Hi All,
The next release of the Firmware-A bundle of projects tagged v2.12 has an expected code freeze date of Nov, 8th 2024.
Refer to the release cadence section from TF-A documentation (https://trustedfirmware-a.readthedocs.io/en/latest/about/release-informatio…).
Closing out the release takes around 6-10 working days after the code freeze.
v2.12 release preparation tasks start from now.
We want to ensure that planned feature patches for the release are submitted in good time for the review process to conclude.
As a kind recommendation and a matter of sharing CI resources, please launch CI jobs with care e.g.:
-For simple platform, docs changes, or one liners, use Allow-CI+1 label (no need for a full Allow-CI+2 run).
-For large patch stacks use Allow-CI+2 at top of the patch stack (and if required few individual Allow+CI+1 labels in the middle of the patch stack).
-Carefully analyze results and fix the change if required, before launching new jobs on the same change.
-If after issuing a Allow-CI+1 or Allow-CI+2 label a Build start notice is not added as a gerrit comment on the patch right away please be patient as under heavy load CI jobs can be queued and in extreme conditions it can be over an hour before the Build start notice is issued. Issuing another Allow-CI+1 or Allow-CI+2 label will just result in an additional job being queued.
--
Thanks,
Govindraj R
+TF-RMM ML
________________________________
From: Google Calendar <calendar-notification(a)google.com> on behalf of Olivier Deprez <olivier.deprez(a)arm.com>
Sent: 17 January 2025 08:46
To: tf-a(a)lists.trustedfirmware.org <tf-a(a)lists.trustedfirmware.org>; Olivier Deprez <Olivier.Deprez(a)arm.com>
Subject: TF-A Tech Forum - Jan 23rd 2025 - RMM design of EL0 applications support
Hi,
On Jan 23rd 2025, in the TF-A Tech forum, Mate Toth-Pal and Soby Mathew will present the RMM design of EL0 applications support.
The TF-A Tech forum is a regular open forum for anyone from the open source community to participate. Feel free to reach if you have a topic you'd want to present. It can be a design review with slides, walking through RFC patches, or more generic discussion around open source projects.
Regards,
Olivier.
TF-A Tech Forum
Thursday Jan 23, 2025 ⋅ 5pm – 6pm (Central European Time - Paris)
We run an open technical forum call for anyone to participate and it is not restricted to Trusted Firmware project members. It will operate under the guidance of the TF TSC.
Feel free to forward this invite to colleagues. Invites are via the TF-A mailing list and also published on the Trusted Firmware website.
Details are here: https://www.trustedfirmware.org/meetings/tf-a-technical-forum/<https://www.google.com/url?q=https%3A%2F%2Fwww.trustedfirmware.org%2Fmeetin…>
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Hi,
As a follow up to the Firmware-A v2.12 release [1], we are pleased to share the shrinkwrap tool [2]
configurations have been updated to consume latest firmware/upstream ingredients using following tags:
TF-A: v2.12.0
TF-a-tests: v2.12.0
Hafnium: v2.12.0
TF-RMM: tf-rmm-v0.6.0
CCA EDK2: 3223_arm_cca_rmm_v1.0_rel0_v3
linux: cca-full/v5+v7
kvmtool: cca/v3
An additional merge request is in queue for kvm-unit-tests update to cca/rmm-v1.0-rel0 tag.
Shrinkwrap is a convenient tool for building a fully integrated Arm CCA SW stack running on
the Base AEM FVP platform. In particular this is the tool of choice for RMM development to
reproduce a 3 or 4 worlds RME based environment.
Regards,
Olivier.
[1] https://lists.trustedfirmware.org/archives/list/tf-a@lists.trustedfirmware.…
[2] https://shrinkwrap.docs.arm.com/en/latest/
Hi Everyone,
In order to facilitate development for Device Assignment tests for RME-DA, we have added MbedTLS repo as a submodule dependency to tf-a-tests. The merge commit can be found here : https://review.trustedfirmware.org/plugins/gitiles/TF-A/tf-a-tests/+/3e72cd…
The patch is done in such a way that existing build of TF-A-Tests or Test run is not affected due to the additional dependency. Only tests which depend on MbedTLS will be affected in that they will either be skipped or fail at runtime due to the missing dependency. Also, the change allows to use the config `MBEDTLS_DIR` to point to a MbedTLS directory outside the tf-a-tests source tree. This aligns with the TF-A mechanism for MbedTLS dependancy in case the submodule mechanism is not preferred.
We expect existing CI and testing infrastructure to be unaffected by this change. Please let us know if you have any comments.
Best Regards
Soby Mathew
Hi Everyone
We are planning to change how TF-RMM clones and updates the submodule dependencies. The usual practice is to specify the `recursive` option to git clone of the project. This works well when the submodules themselves do not have dependencies. For some dependent repositories like libspdm, there are further dependencies like openssl, cmocka which are not used in the RMM context. Hence specifying the specifying the `recursive` option is not the ideal solution especially when RMM is deployed in Continuous integration solutions. The above issue was worked around in RMM by fetching libspdm within the build context but this was also not ideal as it kept the libspdm outside the git submodules framework and the git fetch was done every time the project was rebuilt.
To solve this, we are proposing to move the management of the submodules into the build system and away from the user. Specifically, during configuration phase of the project, cmake will issue `git submodule update --init --depth 1`.
This means that the user will not be responsible for syncing the submodules anymore and the build system will take of this. This also ties in with the patching method of the build system as a particular SHA can be ensured before the patch is applied.
The patch can be found here : https://review.trustedfirmware.org/c/TF-RMM/tf-rmm/+/33512
Any rebase of the project which updates the submodules will now be transparently applied without the user having to update the submodules manually.
We think that we will have more dependent submodules for TF-RMM in the future and it is better to script this within the build system. This change should not break any of the existing CI systems as it is backward compatible, but it may become a little inefficient if the `recursive` option is specified as there will be unnecessary git repositories fetched.
Please let us know if any comments.
Best Regards
Soby Mathew
hello tf-rmm group,
Recently I'm learning ARM CCA.But I have trouble running the latest version TF-RMM.It failed at runtime/ core/ init.c/ in func rmm_arch_init.When try to do write_hcrx_el2 action it paniced.So it looks like the FVP doesn't have the hcrx_el2 register.I'm using the FVP_Base_RevC-2xAEMvA_11.27_19. It's the latest version in the arm's offical website.The tf-rmm-v0.5.0 works fine.So I'm wondering how do you test latest version TF-RMM.It would be appreciated if you could reply.
Best,
Wang.