Hi All,
This is going out to all the primary TF maillists.
It's a gentle reminder that a TF Discord channel has been created for all
chat communications in the TF ecosystem. All TF participants are
encouraged to join.
Instructions on how to join can be found here:
https://www.trustedfirmware.org/faq/ <https://www.trustedfirmware.org/faq/>
[image: Screenshot 2024-04-17 at 7.08.01 AM.png]
Please let me know if you have any questions,
Don Harbin
TrustedFirmware Community Manager
don.harbin(a)linaro.org
Hi, In the TF-A Tech Forum on Apr 18th at 4.00pm BST, Javier Almansa
Sobrino will present the topic of TF-RMM Stage-1 Memory management, by his
own words: "This week's TF-A Tech Forum will present the TF-RMM Stage 1
Memory Management, where we will discuss the design of the TF-RMM memory
space as well as some implementation details and future work." Regards,
Olivier.
TF-A Tech Forum
Thursday Apr 18, 2024 ⋅ 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/Trusted
Firmware is inviting you to a scheduled Zoom meeting.Join Zoom
Meetinghttps://linaro-org.zoom.us/my/trustedfirmware?pwd=VktXcm5MNUUyVVM4R0k3ZUtvdU84QT09
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Guests
tf-a(a)lists.trustedfirmware.org
marek.bykowski(a)gmail.com
okash.khawaja(a)gmail.com
Hi all,
The TF-A Project runs an open technical forum call for anyone to participate and it is not restricted to Trusted Firmware project members. It operates under the guidance of the TF TSC. The meeting is held fortnightly on thursdays @ 4PM BST.
This week's TF-A Tech Forum will present the TF-RMM Stage 1 Memory Management, where we will discuss the design of the TF-RMM memory space as well as some implementation details and future work.
Metting details with instructions on how to join will be provided on a follow-up email.
Best regards,
Javier
Hi,
In a multi-NUMA architecture, the RMM firmware is loaded to a memory of a numa. When the confidential virtual machine triggers VM_Exit, inst cache miss exists in running of code of the RMM, and an instruction needs to be fetched from the DRAM to the instruction cache. If the vCPU and RMM firmware memory do not belong to the same NUMA node, the instruction fetch delay is longer and the performance is poorer. I would like to ask if there is an optimization plan for this problem?
Hi,
We would like to propose the following topic for discussion at the Tech Forum tomorrow.
* RME Granule Protection Table (GPT) block fusing
The GPT L1 entries needs to be fused to avoid TLB shattering for RME enabled CPUs. We will talk about the different prototype approaches tried in TF-A (EL3 firmware) and issues with each approach. We have a patch in review in which implements the “brute force” fusing algorithm. We explain our reasoning for picking this approach and possible future enhancements which may resolve some of the issues anticipated.
Also the fine- grained locking scheme implemented for GPT manipulation will also be discussed.
The patch in review is here : https://review.trustedfirmware.org/c/TF-A/trusted-firmware-a/+/26674.
For design details of the GPT Library, please refer here : https://trustedfirmware-a.readthedocs.io/en/latest/components/granule-prote… .
Best Regards
Soby Mathew
-----Original Appointment-----
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Sent: Thursday, February 22, 2024 10:27 PM
To: tf-a(a)lists.trustedfirmware.org; marek.bykowski(a)gmail.com; okash.khawaja(a)gmail.com
Subject: [TF-A] Updated invitation with note: TF-A Tech Forum @ Every 2 weeks from 9am to 10am on Thursday (MST) (tf-a(a)lists.trustedfirmware.org)
When: Occurs every 2 week(s) on Thursday effective 07/03/2024 from 16:00 to 17:00 Europe/London.
Where:
TF-A Tech Forum
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
This event has been updated with a note:
"Updating invite link"
Changed: description
Description
CHANGED
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…>
Trusted Firmware is inviting you to a scheduled Zoom meeting.
Join Zoom Meeting
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One tap mobile
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+16699009128,,9159704974# US (San Jose)
Dial by your location
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877 853 5247 US Toll-free
888 788 0099 US Toll-free
Meeting ID: 915 970 4974
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When
Every 2 weeks from 9am to 10am on Thursday (Mountain Standard Time - Phoenix)
Guests
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Hi Everyone,
We have been having instances of spam on the tf-rmm mailing list. We have made some changes on the default posting rules now and will monitor the outcome in the coming days.
Best Regards
Soby Mathew
Hi Everyone,
The EAC5 development branch has been merged back to the `main` and tagged (https://github.com/TF-RMM/tf-rmm/releases/tag/rmm-spec-v1.0-eac5) . TF-RMM is now RMM v1.0 EAC5 [1] compliant and all the corresponding Normal world software entities need to be updated to this version of ABI to work with RMM. The Normal world entities would be published later in due course, and we will update the list with relevant information as it becomes available.
The tf-a-tests changes have been merged to master and can be found here : https://git.trustedfirmware.org/TF-A/tf-a-tests.git/commit/?id=3dc2d746aa4b… . For TF-A, the master branch is compatible with EAC5 changes.
If you find any issues, please report them via mailing list, tf-rmm discord channel or github issues.
Best Regards
Soby Mathew
[1] https://developer.arm.com/documentation/den0137/1-0eac5/?lang=en
Hi Everyone,
The initial integration of CBMC (C Bounded Model checking) for TF-RMM has been merged. Please refer to the application note here for more details on how to trigger CBMC analysis/coverage/assert targets on TF-RMM implementation : https://tf-rmm.readthedocs.io/en/latest/resources/application-notes/cbmc.ht…
Best Regards
Soby Mathew
