High-Level Design Guides

The ACRN Hypervisor acts as a host with full control of the processor(s) and the hardware (physical memory, interrupt management and I/O). It provides the User OS with an abstraction of a virtual platform, allowing the guest to behave as if were executing directly on a logical processor.

These chapters describe the ACRN architecture, high-level design, background, and motivation for specific areas within the ACRN hypervisor system.

• Overview
  • ACRN Supported Use Cases
  • Hardware Requirements
  • ACRN Architecture
  • Hypervisor
  • Service VM
  • User VM
  • Freedom From Interference
  • Boot Flow
  • Power Management
• Hypervisor
  • Hypervisor Startup
  • VM Management
  • CPU Virtualization
  • Memory management
  • I/O Emulation
  • IOC Virtualization
  • Physical Interrupt
  • Timer
  • Virtual Interrupt
  • VT-d
  • Device Passthrough
  • Partition mode
  • Power Management
  • Console, Shell, and vUART
  • Hypercall / VHM upcall
  • Compile-time configuration
  • RDT support
  • Split-locked Access handling
• Device Model
  • Configuration
  • DM Initialization
  • VHM
  • I/O Emulation in Service VM
  • Device Emulation
  • ISA and PCI Emulation
  • ACPI Virtualization
  • PM in Device Model
  • Pass-through in Device Model
• Emulated Devices
  • USB Virtualization
  • UART virtualization
  • Watchdoc virtualization
  • AHCI virtualization
  • GVT-g GPU Virtualization
  • System timer virtualization
  • UART emulation in hypervisor
  • RTC emulation in hypervisor
  • Hostbridge emulation
  • AT keyboard controller emulation
  • Split Device Model
  • Interfaces Design
• Virtio Devices
  • Virtio introduction
  • Key Concepts
  • Virtio Frameworks
  • Virtio APIs
  • Supported Virtio Devices
• Power Management
  • P-state/C-state management
  • S3/S5
• Tracing and Logging
  • Shared Buffer
  • ACRN Trace
  • ACRN Log
• Virtual Bootloader
• Security
  • Introduction
  • Background
  • ACRN High-Level Security Architecture