ionescu007/SimpleVisor
SimpleVisor is a simple, portable, Intel VT-x hypervisor with two specific goals: using the least amount of assembly code (10 lines), and having the smallest amount of VMX-related code to support dynamic hyperjacking and unhyperjacking (that is, virtualizing the host state from within the host). It works on Windows and UEFI. observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 3822
- days_rel: n/a
- days_push: 847
- n_releases_24m: 0
Adoption not part of the score
1985 stars · 282 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
SimpleVisor is a minimal, portable Intel VT-x hypervisor written in about 500 lines of C and 10 lines of assembly, supporting dynamic hyperjacking and unhyperjacking of the host. It runs on 64-bit Windows and in UEFI environments and serves primarily as an educational reference for learning how hypervisors work.
Use cases
- learn how Intel VT-x hypervisors work
- study minimal VMX hyperjacking code
- virtualize the host from within the host on Windows
- experiment with EPT and VPID in a small codebase
- run a hypervisor in a UEFI environment
- understand VMX root and non-root operation
When to choose
- you want a small, heavily commented codebase to learn hypervisor internals
- you need dynamic load/unload of a VT-x hypervisor on 64-bit Windows
- you want a starting point for building your own hypervisor
- you need a UEFI-mode hypervisor experiment
When to avoid
- you need a production-grade hypervisor with full multiprocessor and OS-boot support from UEFI
- your machine already runs under Hyper-V, Xen, or another hypervisor
- you need 32-bit x86, Windows 7, or pre-Nehalem CPU support
- you need a full-featured virtualization product like VirtualBox or KVM
Facets
library · maturity maintenance
developer-tools security operating-systems developer-tools security hardware windows cpp c hypervisor intel-vt-x hyperjacking uefi vmx ept educational kernel-driver virtualization
2 sources
- readme: https://github.com/ionescu007/SimpleVisor · fetched 2026-08-28 · a06a1d343cb1
- homepage: http://ionescu007.github.io/SimpleVisor/ · fetched 2026-08-29 · 79659e66a502
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| ionescu007/SimpleVisor | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="ionescu007/SimpleVisor")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem