RVVM – The RISC-V Virtual Machine

• RVVM

  7 810 9.6 C

  The RISC-V Virtual Machine

• mini-rv32ima

  16 1,479 6.6 C

  A tiny C header-only risc-v emulator.

So is this, even more so in my taste:

https://github.com/cnlohr/mini-rv32ima/blob/master/mini-rv32...

A RISC-V emulator in one include file.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• opensbi-h

  1 28 0.0 C

  WIP: A fork of OpenSBI, with software-emulated hypervisor extension support

> I wish ARM64, RISC-V, and other modern ISAs had taken DEC Alpha AXP's idea of restricting all of the privileged instructions to the firmware

This is already possible on RISC-V to some extend, by trapping privileged instructions into upper privileged modes. Everything in the ISA is made so it may be achieved cleanly. It also does not allow to detect current privileged mode, so the kernel running in U-mode and trapped on each privileged instruction would never know it's actually not in S-mode.

There is even a software-based hypervisor extension emulator based on that, that brings KVM to non-hypervisor-capable HW: https://github.com/dramforever/opensbi-h

Suggest a related project