From 34d7a40f9756449a6a58d77ea145f1d7b6b6beaf Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=91=E5=BE=AE?= <1067852565@qq.com>
Date: Fri, 20 Sep 2024 10:59:35 +0200
Subject: [PATCH] docs: add notice

---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 83b56004..38acaf81 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,9 @@
 
 [**Checkout our documents in eunomia.dev!**](https://eunomia.dev/bpftime/)
 
+bpftime is not `userspace eBPF VM`, it's a runtime framework includes everything to run eBPF in userspace: loader, verifier, helpers, maps and ufunc. It has multiple VM options support. For eBPF VM only, please see  [llvmbpf](https://github.com/eunomia-bpf/llvmbpf), [ubpf](
+https://github.com/iovisor/ubpf) and [rbpf](https://github.com/qmonnet/rbpf).
+
 ## Why bpftime? What's the design Goal?
 
 - **Performance Gains**: Achieve better performance by `bypassing the kernel` (e.g., via `Userspace DBI` or `Network Drivers`), with more configurable, optimized and more arch supported JIT/AOT options like `LLVM`, while maintaining compatibility with Linux kernel eBPF.