cloud-hypervisor
QEMU
cloud-hypervisor | QEMU | |
---|---|---|
17 | 190 | |
3,597 | 9,313 | |
1.6% | 1.7% | |
9.8 | 10.0 | |
6 days ago | 1 day ago | |
Rust | C | |
Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
cloud-hypervisor
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We Replaced Firecracker with QEMU
There is no mention of cloud-hypervisor[1] (also in the rust-vmm ecosystem) in the article. It has the memory reclamation feature they require. It also support VFIO and virtiofs.
[1] <https://github.com/cloud-hypervisor/cloud-hypervisor>
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Hypervisor Development in Rust
https://github.com/tandasat/Hypervisor-101-in-Rust is there to help
https://github.com/cloud-hypervisor/cloud-hypervisor isn't educational necessarily but is one of the most technically progressive fastest developing highest funded vm projects ever, and there are oodles of tech talks on it. I am not qualified to make any specific recommendations, but there's tons of stuff here.
- A Virtual Machine Monitor for Modern Cloud Workloads
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Firecracker internals: deep dive inside the technology powering AWS Lambda(2021)
> The goal of the Cloud Hypervisor project differs from the aforementioned projects in that it aims to be a general purpose VMM for Cloud Workloads and not limited to container/serverless or client workloads.
Firecracker is such a great piece of technology. I'm amazed that AWS actually open-sourced it. All kudos to them. We're using Firecracker at our company to allow API companies build interactive demos like this one we built for Prisma [1].
[0] https://github.com/cloud-hypervisor/cloud-hypervisor
[1] https://playground.prisma.io
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Cloud Hypervisor vs Hypervisors
Relatively new project 'Cloud Hypervisor' https://github.com/cloud-hypervisor/cloud-hypervisor seems to launch images faster.
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I'm releasing cargo-sandbox
The Chrome OS hypervisor was then evolved/forked into Firecracker and Intel's Cloud Hypervisor, with the latter supporting both Linux and Windows. Perhaps Cloud Hypervisor would serve as a good backbone for sandboxing, with its Rust implementation and focus on security?
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Virtink : un module complémentaire de virtualisation légère pour Kubernetes …
GitHub - cloud-hypervisor/cloud-hypervisor: A Virtual Machine Monitor for modern Cloud workloads. Features include CPU, memory and device hotplug, support for running Windows and Linux guests, device offload with vhost-user and a minimal compact footprint. Written in Rust with a strong focus on security.
- Cloud Hypervisor Is an Open Source Virtual Machine Monitor (VMM)
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We clone a running VM in 2 seconds
Did you guys think about live migrations? https://github.com/cloud-hypervisor/cloud-hypervisor seems to support it and it shares a good amount of code with firecracker.
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Show r/kubernetes: Virtink - Lightweight Virtualization Add-on for Kubernetes
Virtink is a Kubernetes add-on for running Cloud Hypervisor virtual machines. By using Cloud Hypervisor as the underlying hypervisor, Virtink enables a lightweight and secure way to run fully virtualized workloads in a canonical Kubernetes cluster.
QEMU
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QEMU Version 9.0.0 Released
My most-wanted QEMU feature: https://github.com/qemu/qemu/commit/a2260983c6553
Using `gic-version=3` on macOS you can now use more than 8 cores on ARM chips.
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Autoconf makes me think we stopped evolving too soon
A better solution is just to write a plain ass shell script that tests if various C snippets compile.
https://github.com/oilshell/oil/blob/master/configure
https://github.com/oilshell/oil/blob/master/build/detect-pwe...
Not an unholy mix of m4, shell, and C, all in the same file.
---
These are the same style as a the configure scripts that Fabrice Bellard wrote for tcc and QEMU.
They are plain ass shell scripts, because he actually understands the code he writes.
https://github.com/qemu/qemu/blob/master/configure
https://github.com/TinyCC/tinycc/blob/mob/configure
OCaml’s configure script is also “normal”.
You don’t have to copy and paste thousands of lines of GNU stuff that you don’t understand.
(copy of lobste.rs comment)
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WASM Instructions
Related:
A fast Pascal (Delphi) WebAssembly interpreter:
https://github.com/marat1961/wasm
WASM-4:
https://github.com/aduros/wasm4
Curated list of awesome things regarding WebAssembly (wasm) ecosystem:
https://github.com/mbasso/awesome-wasm
Also, it would be nice if there was a WASM (soft) CPU for QEMU, which (if it existed!) would go here:
https://github.com/qemu/qemu/tree/master/target
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Revng translates (i386, x86-64, MIPS, ARM, AArch64, s390x) binaries to LLVM IR
> architectural registers are always updated
In tiny code, the guest registers (global TCG variables) are stored in the host's registers until you either call an helper which can access the CPU state or you return (`git grep la_global_sync`). This is the reason why QEMU is not so terribly slow.
But after a check, this also happens when you access the guest memory address space! https://github.com/qemu/qemu/blob/master/include/tcg/tcg-opc... (TCG_OPF_SIDE_EFFECTS is what matters)
But still, in the end, it's the same problem. What QEMU does, can be done in LLVM too. You could probably be more efficient in LLVM by using the exception handling mechanism (invoke and friends) to only serialize back to memory when there's an actual exception, at the cost of higher register pressure. More or less what we do here: https://rev.ng/downloads/bar-2019-paper.pdf
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State of x86-64 emulation of non-MacOS binaries
Um, in case you don't know, UTM (based on QEMU) is out for quite a while.
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Multipass: Ubuntu Virtual Machines Made Easy
Some of these tools include Oracle VM VirtualBox (that I've used since before the acquisition of Sun Microsystems by Oracle), VMWare Workstation Player, and QEMU, but last year, I found out about Multipass.
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Libsodium: A modern, portable, easy to use crypto library
For C/C++ projects that use meson as the build system, there is an excellent way to manage dependencies:
https://mesonbuild.com/Wrapdb-projects.html
https://mesonbuild.com/Wrap-dependency-system-manual.html
meson will download and build the libraries automatically and give you a variable which you pass as a regular dependency into the built target:
https://github.com/qemu/qemu/tree/005ad32358f12fe9313a4a0191...
https://github.com/harfbuzz/harfbuzz/tree/main/subprojects
https://github.com/harfbuzz/harfbuzz/blob/37457412b3212463c5...
Or, if you're using proper operating systems, they're managed by the usual package manager, just like everything else.
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Top 6 Virtual Machine Software in 2023
For all the users of the Linux platform, QEMU is the VM that you should go for. This software comes without any price tag and works as an emulator of various machines with utmost ease and completion; the software uses dynamic translations to emulate hardware peripherals and enhances its overall performance. If you are using QEMU as a virtualizer, then it will function exactly like the host system (provided you have the right set of hardware).
- Show HN: I'm 17 and wrote this guide on how CPUs run programs
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UTM for Developers
In this tutorial, we set up macOS and Windows virtual machines on UTM, a macOS application that provides a GUI wrapper for QEMU, a powerful open-source emulator and virtualizer. UTM allows you to easily manage and run virtual machines without memorizing complex commands. It also has special handling for macOS, making it simpler to install compared to other virtual machine software.
What are some alternatives?
firecracker - Secure and fast microVMs for serverless computing.
UTM - Virtual machines for iOS and macOS
kubevirt - Kubernetes Virtualization API and runtime in order to define and manage virtual machines.
TermuxArch - Experience the pleasure of the Linux command prompt in Android, Chromebook, Fire OS and Windows on smartphone, smartTV, tablet and wearable https://termuxarch.github.io/TermuxArch/
kata-containers - Kata Containers is an open source project and community working to build a standard implementation of lightweight Virtual Machines (VMs) that feel and perform like containers, but provide the workload isolation and security advantages of VMs. https://katacontainers.io/
Unicorn Engine - Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)
virt-manager - Desktop tool for managing virtual machines via libvirt
Vagrant - Vagrant is a tool for building and distributing development environments.
rusty-hermit - Hermit for Rust. [Moved to: https://github.com/hermit-os/hermit-rs]
xemu - Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
crosvm - The Chrome OS Virtual Machine Monitor - Mirror of https://chromium.googlesource.com/crosvm/crosvm/
em-dosbox - An Emscripten port of DOSBox