2020-09-03 Project Stratos Sync Meeting notes
Attendees
- Alex
- Mathieu
- Mike
- Mark
- John Niven Arm
- Tom
- Ed Doxat Arm
- Sumit
- Don
- Steffano - able to join towards end
- Souvik
- Anmar
- Joakim
- Ruckika
- Satayaki
- Azzedine
- Diana
- Randy
- Illias
- Pratik
- Don
Goals
- Get a view of the engineering support available to work on Stratos
Discussion items
- Staffing plan updates
- Additional resources planned from KWG - Jean-Philippe Brucker, Alex Bennéeand Jean-Philippe Brucker to coordinate.
- Linaro PoR is solidified on Sep 15th
- Planned
- Not Planned
Implement Optimized VirtIO interfaces (STR-9)
- STR-1 - VirtIO Audio
- STR-2 - VirtIO Watchdog
- STR-3 - VirtIO SPI
- STR-4 - VirtIO SCMI and other resource management approaches
- STR-6 - VirtIO SMMUv
- STR-7 - Create a common virtio library for use by programs implementing a backend
- STR-8 - Prototype a minimal memory profile virtio backed with front end changes
hypervisor boot orchestration (type-1) (STR-10)
- RTOS Dom0 on the safety island (STR-11)
- Hypercall Standarardization (STR-12)
- Improve VirtIO interfaces implementation for type-1 hypervisors (STR-14)
Azzedine : expecting to add an engineer.
Souvik can we join KWG SCMI and Stratos : Mathieu I think these are not colosly coupled : Alex isint there a dependancy ? : Souvik yes, need to connect to something. MP: should not add a dependancy . Azzedine - both args are valid
Alex - is it transparrrent? , Souvick there is somethign to consider
MP: need to have virtio expert to oversiee and maintain common design aproahces, comment on patches as first pass. Virtio maintainer is Redhat - Michael (MST). Ed other engeeing benifits - do we have an aim to deliver within X percent of bare metal - AZ yes, we do need KPIs etc think we can work on the requirement in this team, might need to organise the review aspect MP: likly first partisipant will become the reviewer.
MP: what about QoS, see this on rpoc side of things. Use case two SPI controllers, how to avoid issues. Could use BFQ like solution (algorithims) Souvik since SCMI is quite far along boot becomes slow, may need to change drivers to change order to acomodate the differences.
AZ: QoS can be tackled independanly to the uncovered boot issues for example
AZ SCMI stands on its own, SPI etc may be small topics and it may be possible for QC to tackle these
MP: virtio-audo is already in play, rpmsg subsystem has been sent patches - AZ: is this Acorn (intel) : TG: Google also active in audio
Alex still need to talk to JP, what do people think is most valuable ? Suggest minimal memory footprints, AZ: that makes perfect sence andit foundational.
AZ: another topic Knowing how to manage manifets and pahge tables - device tree realted - virtio-smmu may make this come out naturally, page tables and memory allocation
- Stefano Stabellini Anmar Oueja - Updates to the Initiatives, quick update on changes
Improved the scope, facitate the discussion.
SS: do the cards make more sence now ? Ed - having rtos as dom zero, we were not clear is zepher, we have updated the card to confrim this choice, the other cards were clarifications rather than changes.
Anmar : Mailing list was broken, please resend: AZ: planning to get back to this, Ed have busy people and new people.
- Mike Holmes There is a proposed "fireside chat" on virtualization planned for linaro connect, does anyone have any suggestions for questions ?
- Don - do you mean suggestions of people, or of questions: Alex - be nice to have an Arm representative. Pre recorded session, Arm dont think we will be ready to help
Diana : dont currently have any capacity to join in from the current plan. Anmar : we could still do with input on wether the cards meet NXP needs now or in the future>
Action items
- Mike Holmes : sycn with Vincent on viortio- scmi and Souviks comments
- Alex Bennée will flesh out the card in time for JP to review
- Randy Linnell - fix Dainas access.