Attendees

• Mike
• Mathieu
• Alex
• Jens
• Mat (Arm)
• Mark
• Pratik (Qualcomm)
• Peter
• Arnd
• Don
• Jean-Phillip
• Illias
• Dan Mila (Windriver)
• Bill F
• Catalin (NXP)
• Bill M
• Loic (ST)
• Robin (Arm)
• Srivatsa (Qualcomm)
• Arnaund Pouliquen (ST)
• Souvik (Qualcomm)
• Azzedine (Qualcomm)
• Francois 
• Randy

• Get a view of the engineering support available to work on Stratos.
• SOAFEE (if time)

Discussion items

• Review Action items 
  • Upstreaming attempts stalled at v7, bad API choice for ioctl (too low level), virtio piggy-backs on the kernel RPMB interface
  • Can we find the HW to test/rev the real RPMB interface?

Discussion Points 

• Rust VMM
  
  
  • Aarch64 is now Tier 1 for Rust (1.49.0, as per Dec 2020)
  • Memory safety is the headline feature but:
    • well documented, clear rules - enforced by compiler
    • excellent tooling for deps and distribution
    • rich standard library
    • strong approach to modularity, component re-use
  • Used in production at Google, MS, Intel, Arm
    • Fuchsia device model in Rust
    • Parts of Win10 kernel
  • rust-vmm - not a hypervisor!
    • collection of crates (libs) + hypervisor = build a VMM
    • language agnostic! (although in practice the current ones use Rust all the way through)
    • strong FFI interface (to allow Rust modules to drop into other languages supporting the C FFI)
    • primarily supports KVM (at the moment)
    • CrosVM, Firecracker , Intel Cloud Hypervisor (migration support)
  • rust-vmm project
    • 3 stages of a crate (requirements, implementation, production ready on crates.io)
  • rust-vmm + xen
    • project to replace dom0 tooling with rust components
    • early project
  • rust as bare metal
    • -M profile well supported
    • -A coming along
  • tooling questions
    • just works (a lot comes from LLVM support)
    • rust-analyser - provides LSP and IDE integration
    • what about profiling? cargo-flame?
    • some friction between distro/rust community approach to releases
  • rust/kernel integration
    • is ongoing work to allow kernel to have rust device drivers
      • expected to need some language updates
      • 6 week release cycle clashes with Kernel's approach to tooling
      • probably use rustgcc (not the same as the mainline compiler?)

Action items