Hi, On Oct 16th in the TF-A Tech Forum, Madhukar Pappireddy will present
his work on secure partitions live firmware activation: requirements,
implementation overview, and challenges. Regards, Olivier.
TF-A Tech Forum
Thursday Oct 16, 2025 ⋅ 5pm – 6pm
Central European Time - Paris
Location
https://linaro-org.zoom.us/j/93557863987?pwd=56a1l8cBnetDTZ6eazHGaE1Ctk4W34…https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9355786…
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In Firmware First Handling (FFH), all external aborts are trapped to EL3,
they can be notified to OS/VM using SDEI or by reinjecting SEA. SDEI is
imprecise exception and asynchronous.
GHES driver defines SEA as the only synchronous mechanism (
https://github.com/torvalds/linux/blob/master/drivers/acpi/apei/ghes.c#L118),
hence SEA reinjection is useful for SEA's where OS/VM takes appropriate
action.
For example when an user space application running at EL0 consumes a
poisoned memory by re-throwing SEA the kernel can terminate the individual
application.
For SEA Reinjection we need to figure out the right EL to reinject the SEA
to and then copy ESR_EL3, SPSR_EL3, ELR_EL3 and FAR_EL3 to target ELs
respective registers and calculate new PSTATE for EL3.
To find target_el reference code is provided in SyncExternalAbortTarget
(J1.3.2.7) in ARM DDI 0487L.a.
This event has been canceled with a note:
"Hi, Cancelling as no topic planned for today. Regards, Olivier. "
TF-A Tech Forum
Thursday Oct 2, 2025 ⋅ 5pm – 6pm
Central European Time - Paris
Location
https://linaro-org.zoom.us/j/93557863987?pwd=56a1l8cBnetDTZ6eazHGaE1Ctk4W34…https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9355786…
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tf-a(a)lists.trustedfirmware.org
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Hi, On Sep 18th in the TF-A Tech forum, Sandrine Afsa will present on the
newly announced Rusted Firmware-A and Arm firmware crates projects with the
following agenda: Introducing RF-A & Arm Firmware Crates projects v0.1
release contents Roadmap Request for feedback Regards, Olivier.
TF-A Tech Forum
Thursday Sep 18, 2025 ⋅ 5pm – 6pm
Central European Time - Paris
Location
https://linaro-org.zoom.us/j/93557863987?pwd=56a1l8cBnetDTZ6eazHGaE1Ctk4W34…https://www.google.com/url?q=https%3A%2F%2Flinaro-org.zoom.us%2Fj%2F9355786…
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