Virtual Machine System Management

A project implementing comprehensive virtual machine management, hardware assisted virtualization, and advanced memory management capabilities.

Overview

This project delivers a robust virtual machine management system with advanced features including:

• Hardware-assisted VM creation and lifecycle management
• Sophisticated CPU state and CR0 register operations
• Advanced memory virtualization using Extended Page Table (EPT)
• Enhanced security through KASLR implementation
• Comprehensive kernel symbol management
• Multi-level logging system with rotation capabilities

Technical Architecture

Core Components

1. VM Handler (Documentation)

   • Lifecycle management (create, destroy, pause, resume)
   • Resource allocation and deallocation
   • State transition management
   • Event handling system

2. Memory Management

   • EPT-based memory virtualization
   • KASLR implementation for enhanced security
   • TLB management optimization
   • Page fault handling

3. CPU Operations (Documentation)

   • CR0 register state management
   • Protected mode transitions
   • Cache control operations
   • Hardware-assisted virtualization support

4. Logging Infrastructure (Documentation)

   • Multi-level logging (DEBUG, INFO, WARNING, ERROR)
   • Log rotation and management
   • Performance monitoring
   • Debug support system

Project Structure

├── src/
│   ├── core/           # Core VM handling functionality
│   │   ├── vm_handler.c    # VM lifecycle management
│   │   └── main.c          # Application entry point
│   ├── cpu/            # CPU-specific operations
│   │   ├── cr0.c          # CR0 register management
│   │   └── cr0.h          # CR0 operation definitions
│   ├── include/        # Common headers and definitions
│   │   ├── common.h       # Shared definitions
│   │   └── kallsyms.h     # Kernel symbol management
│   ├── logging/        # Logging infrastructure
│   │   ├── logger.c       # Logging implementation
│   │   └── logger.h       # Logger definitions
│   ├── memory/        # Memory management
│   │   ├── ept.c          # EPT implementation
│   │   ├── ept.h          # EPT definitions
│   │   ├── kaslr.c        # KASLR implementation
│   │   └── kaslr.h        # KASLR definitions
│   └── utils/         # Utility functions
│       ├── utils.c        # Common utilities
│       └── utils.h        # Utility definitions
├── docs/             # Comprehensive documentation
├── Makefile         # Build configuration
└── build.sh         # Build automation script

Prerequisites

System Requirements

• x86_64 processor with virtualization support (VT-x/AMD-V)
• 4GB+ RAM recommended
• Linux kernel 4.0+ or Windows 10+ with virtualization enabled

Development Requirements

• GCC 7.0+ or compatible C compiler
• GNU Make 4.0+
• Bash shell environment
• CMake 3.10+ (optional, for alternative build)

Building the Project

Quick Start

1. Clone the repository
2. Navigate to the project directory
3. Run the build script:

   ./build.sh

Manual Build

make clean    # Clean previous builds
make          # Build the project
make install  # Install the binaries (optional)

Build Options

• make DEBUG=1: Enable debug symbols
• make VERBOSE=1: Verbose build output
• make TEST=1: Build with test suite

Technical Details

VM Handler Implementation

• Event-driven architecture
• Resource management with reference counting
• State machine-based lifecycle management
• Asynchronous operation support

Memory Management

• Hardware-assisted EPT implementation
• 4-level page table support
• KASLR with entropy pool management
• Memory access optimization

CPU Features

• CR0 register bit manipulation
• Protected mode management
• Cache control operations
• Hardware feature detection

Logging System

• Circular buffer implementation
• Configurable log levels
• File rotation support
• Performance impact monitoring

Documentation

Comprehensive documentation is available in the docs/ directory:

• Architecture Overview
• API References
  • CPU Operations
  • Memory Management
  • VM Handler
• Component Details
  • CR0 Operations
  • EPT Implementation
  • KASLR
  • Logging System
  • VM Handler
• Development Guides
  • Getting Started
  • Development Guide
  • Troubleshooting
• Security Considerations

Contributing

Development Workflow

1. Fork the repository
2. Create your feature branch (git checkout -b feature/amazing-feature)
3. Implement changes with tests
4. Update relevant documentation
5. Commit changes (git commit -m 'Add amazing feature')
6. Push to branch (git push origin feature/amazing-feature)
7. Create Pull Request

Coding Standards

• Follow C11 standard
• Maintain consistent code style
• Include unit tests
• Update documentation

License

This project is licensed under the MIT License - see the LICENSE file for details.