2021-12-09 Project Stratos Meeting Notes

Participants

Apologies for issues with the meeting link, updated on all the invites now

SCMI backend
- Vincent: using dmabuf to specify the shared memory
  - https://docs.google.com/drawings/d/1YSuJUSjEdTi2oEUq4oG4A9pBKSEJTAp6hhcHKKhmYHs/edit?usp=sharing
- Arnd: using a different dma allocator than it should (dma coherent)
- Arnd: should be using swiotlb, AJB: wouldn’t that lead to extra copies, Arnd: yes
- AJB: how does the 1M sharing work, VG: using shared memory object for extra RAM chunk
Any update on fat virtqueue (STR-15 / STR-25)?
- Arnd: two main problems. Debugging and layering issue (all devices assume virtqueue/vring size)
- Artem: we should take this to a community discussion
  - virtio-dev, CC, Alexander Tsyshinko
Artem (EPAM): Update from our side re: Zephyr on Xen (STR-21)
- Zephyr up and running as a Dom0
- 2nd PR merged, 3rd in progress
- Link in ticket
- AJB: just using stable ABIs, Artem: yes
Virtio backends that can be potentially FuSa compliant
- ARM working on some basic implementations (awaiting publishing)
- AJB: any interest in watchdog device, Artem: yes, currently done with Xen, but there is interest
Holiday break - when to resume?
- consensus of 20th Jan seemed reasonable