cloud-hypervisor/cloud-hypervisor

Features

• Cloud Workload Virtualizers - Functions as a minimal emulation layer designed to execute 64-bit guest operating systems with optimized resource usage for cloud workloads.
• Cloud Workload Execution - Executes 64-bit guest operating systems using a minimal emulation layer to reduce memory usage and latency.
• QEMU KVM - Uses the Linux kernel virtual machine (KVM) interface to execute guest operating systems with near-native performance.
• Block Storage Services - Exposes virtual block devices to allow a guest operating system to boot and store data.
• Control Plane APIs - Manages virtual machine lifecycles and resource configurations through a standardized REST-API control plane.
• VM Live Migration - Moves running virtual machines between physical hosts with minimal interruption to ensure continuous service and resource balance.
• Virtual Machine Lifecycle Management - Manages the lifecycle of virtual machines through web endpoints, including dynamic CPU and memory resizing and power actions.
• Cloud Workload Virtualization - Runs 64-bit guest operating systems with a minimal emulation layer to reduce memory overhead and latency for cloud environments.
• User-Space Device Models - Runs hardware emulation and device state management in user space to improve security and stability.
• Rust-Based Hypervisors - Utilizes the Rust programming language to ensure memory safety and high performance in the hypervisor's implementation.
• User-Space Virtual Machine Managers - Manages guest CPU and memory resources as a user-space process via a standardized web API.
• Virtio Device Emulators - Provides an implementation of paravirtualized I/O devices for networking and storage using the virtio standard.
• Hardware Passthrough - Maps physical host PCI devices directly into the guest address space using an IOMMU for high-throughput hardware access.
• Virtual Machine Migration - Moves running virtual machines between physical hosts to ensure high availability and resource balance.
• Virtual Machines - Implements a lightweight virtual machine monitor built on KVM for running isolated guest environments.
• Live Migrations - Serializes the guest memory and CPU state to transfer a running virtual machine between physical hosts.
• Virtio Device Emulation - Implements standardized paravirtualized interfaces to handle network, block, and console I/O between the host and guest.
• Virtual Machine Snapshots - Saves the current execution state of a virtual machine to disk to resume operation from that point.
• Networking and Connectivity - Manages virtual network isolation and connectivity for guests using virtio-net or vhost-user-net backends.
• Host-Guest Mounts - Maps host directories into virtual machine filesystems for seamless file access via virtio-fs.
• Shared Memory IPC - Uses memory-mapped regions and virtio queues to exchange data between the host and guest without expensive context switches.
• Host-Guest Communication Channels - Implements a secure communication channel between host and guest using a hybrid socket address family over virtio.
• Dynamic CPU Resizing - Allows adjusting the number of virtual CPUs in a running instance dynamically via API requests.
• Dynamic Memory Resizing - Expands or shrinks available RAM in a running instance using memory management protocols via API requests.
• Hardware Resource Hotplugging - Enables adding or removing CPUs, memory, and PCI devices while the guest system remains running.
• Hardware Resource Hotplugging - Updates the guest hardware configuration by injecting virtual PCI devices or memory blocks into a running instance.
• DMA and IOMMU Translations - Implements a virtual input output memory management unit to enable safe nested virtualization and device assignment.
• Persistent Memory Emulation - Emulates persistent memory devices to reduce memory footprint and bypass guest page caches.
• Physical Device Pass-through - Implements the mapping of physical host PCI devices directly into the guest address space for high-throughput hardware access.
• Virtual Disk Image Booting - Starts virtual machines directly from cloud images or formatted kernels to streamline deployment.
• NVMe Emulation - Simulates NVMe controllers to provide high-speed storage access to the virtual environment.
• Virtual Storage Emulation - Provides high-speed access to guests through simulated NVMe controllers, block devices, and shared host filesystems.
• Host-Guest Integration Tools - Establishes secure communication channels and shared memory interfaces between a host and guest using virtio protocols.
• Virtual Device Hotplugging - Adds or removes hardware components from a running virtual machine without requiring a system reboot.
• PCI Device Hotplugging - adds or removes PCI hardware from a running instance using unique device identifiers and API requests.
• Network Bridges - Connects virtual machines directly to the host network using a MACvTAP bridge for external connectivity.
• Management APIs - Provides a set of standardized web endpoints to manage and monitor running virtual machines.
• Virtualization and Orchestration - Virtual machine monitor optimized for cloud workloads.
• Hypervisor Implementations - VMM optimized for cloud-native workloads.

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