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Implemented

Sv39 virtual memory (MMU)

Priority 1 - CPU Architectures & Execution Engines / 1.7 RISC-V ISA

$2,000 / $2,000fully funded
Done$2,000 / $2,000 - 100%
As a firmware developer, I want vemu's Sv39 virtual memory (MMU) to stay accurate, tested, and documented, so that I can keep depending on virtual memory and Linux.

Why it matters

virtual memory and Linux

Summary

Sv39 page-table MMU

Scope of work

Already implemented. Harden, broaden coverage, add tests and documentation for Sv39 virtual memory (MMU). What it is: Sv39 page-table MMU. Why it matters: virtual memory and Linux.

Current state

Status: Fully implemented. Notes / evidence: mmu.rs Sv39 3-level walk + superpages, A/D bits, SUM/MXR; rv64 -v test variants pass.

Blocked by 1

Fund these first - this work can't be completed until they ship.

  • Done
Unblocks 2

Funding this also clears the way for the work below.

Activity log

  1. Feature defined and added to the roadmap

  2. Funding goal set to $2,000

  3. Implementation status: Implemented

  4. Delivered - counted as fully funded