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What is Xvisor?

Xvisor® is an open-source type-1 hypervisor that provides a lightweight, monolithic, and flexible virtualization solution. It is engineered to perform at a high level while maintaining a minimal memory footprint across a variety of CPU architectures, such as ARMv5, ARMv6, ARMv7a, ARMv7a-ve, ARMv8a, x86_64, and RISC-V, among others. In a distinctive feature, it supports ARM processors that do not possess virtualization extensions, a rarity among ARM hypervisors. Additionally, it is recognized as the pioneering Type-1 hypervisor for RISC-V, highlighting its innovative capabilities. The design of Xvisor’s source code promotes portability, allowing it to be easily modified for most 32-bit or 64-bit architectures, given they come with a paged memory management unit (PMMU) and a compatible GNU C compiler (GCC). Focused primarily on full virtualization, Xvisor can seamlessly support a wide range of unmodified guest operating systems, while also offering paravirtualization as an optional feature that can be utilized in an architecture-independent way, such as through VirtIO PCI/MMIO devices. This level of adaptability positions Xvisor as an attractive option for developers aiming to deploy virtualization solutions across multiple platforms, ensuring versatility in various computing environments.

What is Lguest?

Lguest allows for the simultaneous operation of multiple instances of a 32-bit kernel, and you can start it by executing the command modprobe lg followed by Documentation/lguest/lguest to create a new guest. I highly recommend trying it out because lguest is incredibly easy to set up and use. Its advantages are noteworthy: I can boot kernels for testing in under a second, which is about ten times faster than qemu and a hundred times quicker than traditional boot methods. Furthermore, by utilizing a pty for console access, you can perform operations like piping outputs through grep. Lguest includes a full kernel patch, featuring the launcher, and is compatible with versions 2.6.23-git13 and newer. The main purpose of lguest is to maintain the isolation of guests, preventing them from directly accessing the host system, except via virtual devices provided by the host, even in cases where the guest may pose a security threat. However, a potentially dangerous guest kernel can still pin host memory, but this is restricted to the amount allocated for the guest itself. While many images are set up to create virtual consoles such as (/dev/tty0, etc.), lguest designates its console as /dev/hvc0, which enhances its functionality. This unique console setup, along with its rapid boot times, makes lguest an invaluable resource for developers looking to efficiently test kernel modifications without the complexities associated with full virtualization environments. Thus, lguest stands out as both a practical tool for quick testing and a means to ensure the integrity of the host system.

Media

Media

Integrations Supported

Additional information not provided

Integrations Supported

Additional information not provided

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Pricing Information

Pricing not provided.
Free Trial Offered?
Free Version

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Supported Platforms

SaaS
Android
iPhone
iPad
Windows
Mac
On-Prem
Chromebook
Linux

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Customer Service / Support

Standard Support
24 Hour Support
Web-Based Support

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Training Options

Documentation Hub
Webinars
Online Training
On-Site Training

Company Facts

Organization Name

Xvisor

Company Location

United States

Company Website

xhypervisor.org

Company Facts

Organization Name

Lguest

Company Location

Australia

Company Website

lguest.ozlabs.org

Categories and Features

Categories and Features

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