2020.10.12: Working Group Meeting

Platform Spec Task Group Agenda: 12 Oct 2020

Meeting Info: weekly on Mondays (09:00 PST, 16:00 UTC)

Details: https://sites.google.com/a/riscv.org/risc-v-staff/home/tech-groups-cal

Topics

• Meetings now weekly, see https://sites.google.com/a/riscv.org/risc-v-staff/home/tech-groups-cal (closed)
  • Please note: all future meetings will be on zoom per RISC-V International Guidelines
• Rename task group: based on discussion, "Profiles and Platform Technical Subcommittee" (P2TS) is now the official name (closed)
• Proposed scope/charter (revisit)
  • There has been a significant rewrite
  • Defining profiles (see intro proposal)
  • https://github.com/riscv/riscv-platform-specs/wiki/Draft-Charter
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/280
  • Consensus was that this was sufficient for submitting to TSC (Al will do the paperwork)
• SBI PMU extension (revisit)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/197
  • See SBI Reset below
• SBI Reset extension (revisit)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/212
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/226
  • Lengthy discussion on whether or not SBI can be approximately equal to the existing ARM PSCI spec since both serve similar purposes:
    • Pros: no need to re-invent some things, may be able to re-use existing test suites and tools
    • Cons: OpenSBI already exists (along with a couple of other implementations) so they would need rework, which begs the question of why replace what is already in use
    • Tabled for further discussion and research, with Paul to send out his work on SBI re-using PSCI
• Proposal: Hart Suspend Extension for IDLE (new)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/274
  • Submitter not available to present the idea; discussion to continue on the mailing list
  • NB: this is yet another proposed extension to SBI
• Proposal: README (closed)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/282
  • No objections, patch now merged in github
• Proposal: Introduction to spec (new)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/290
  • Postponed discussion: ran out of time
• Proposal: basic asciidoc cleanup (closed)
  • discussion: https://lists.riscv.org/g/tech-unixplatformspec/message/298
  • PR: https://github.com/riscv/riscv-platform-specs/pull/7
  • No objections, patches now merged in github
  • While no objections, the assumption is that this is a starting point and we'll fix things should we need to before anything gets finalized -- the standard iterative approach

Open Floor