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chromium/chromiumos/platform/crosvm/c59ce5a137126ee434dc0a298ed3b431ff7a93d0
commit
c59ce5a137126ee434dc0a298ed3b431ff7a93d0
[log]
author
Frederick Mayle <fmayle@google.com>
Wed Apr 22 01:06:14 2026
committer
crosvm-scoped@luci-project-accounts.iam.gserviceaccount.com <crosvm-scoped@luci-project-accounts.iam.gserviceaccount.com>
Thu Apr 23 01:41:46 2026
tree
2d5d2909df6a373993fcdefda78e5b6211bd12b7
parent
1be776ffeffa7dad9985453991d9c5c643d08072 [diff]
add clippy_mingw64_with_whpx presubmit

The WHPX hypervisor backend bitrot in uptsream. Add a clippy-only
presubmit check for it + fix the compiler errors and fix/silence the
clippy warnings.

Change-Id: I4523520e3e8f71a8586a9c98ef7ea79e4992b03d
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/7786643
Reviewed-by: Zihan Chen <zihanchen@google.com>
Reviewed-by: Noah Gold <nkgold@google.com>
Commit-Queue: Frederick Mayle <fmayle@google.com>
12 files changed
tree: 2d5d2909df6a373993fcdefda78e5b6211bd12b7
  1. .cargo/
  2. .config/
  3. .devcontainer/
  4. .github/
  5. .vscode/
  6. aarch64/
  7. aarch64_sys_reg/
  8. acpi_tables/
  9. android_audio/
  10. arch/
  11. argh_helpers/
  12. audio_streams_conformance_test/
  13. audio_util/
  14. base/
  15. base_tokio/
  16. bit_field/
  17. common/
  18. cros_async/
  19. cros_fdt/
  20. cros_tracing/
  21. cros_tracing_types/
  22. crosvm_cli/
  23. crosvm_control/
  24. devices/
  25. disk/
  26. docs/
  27. e2e_tests/
  28. ext2/
  29. fuse/
  30. fuzz/
  31. gpu_display/
  32. hypervisor/
  33. infra/
  34. io_uring/
  35. jail/
  36. kernel_cmdline/
  37. kernel_loader/
  38. kvm_sys/
  39. libcras_stub/
  40. linux_input_sys/
  41. logo/
  42. media/
  43. metrics/
  44. metrics_events/
  45. net_sys/
  46. net_util/
  47. perfetto/
  48. power_monitor/
  49. prebuilts/
  50. proc_init/
  51. proto_build_tools/
  52. protos/
  53. resources/
  54. riscv64/
  55. sandbox/
  56. serde_keyvalue/
  57. snapshot/
  58. src/
  59. swap/
  60. system_api/
  61. tests/
  62. third_party/
  63. tools/
  64. tube_transporter/
  65. usb_sys/
  66. usb_util/
  67. vendor/
  68. vfio_sys/
  69. vhost/
  70. virtio_sys/
  71. vm_control/
  72. vm_memory/
  73. win_audio/
  74. win_util/
  75. x86_64/
  76. .dockerignore
  77. .envrc
  78. .gitattributes
  79. .gitignore
  80. .gitmodules
  81. .rustfmt.toml
  82. ARCHITECTURE.md
  83. Cargo.lock
  84. Cargo.toml
  85. CONTRIBUTING.md
  86. DIR_METADATA
  87. LICENSE
  88. mypy.ini
  89. OWNERS
  90. OWNERS_COUNCIL
  91. PRESUBMIT.cfg
  92. pyproject.toml
  93. README.chromeos.md
  94. README.md
  95. rust-toolchain
README.md

crosvm

crosvm logo

The ChromeOS Virtual Machine Monitor

License Documentation Matrix

crosvm is a secure, lightweight, and performant Virtual Machine Monitor (VMM) written in Rust. Originally developed for ChromeOS to run Linux (Crostini) and Android guests (ARCVM). It is now used across multiple products and platforms such as TerminalApp on Android, Cuttlefish and Windows.

crosvm focuses on security through strong isolation and a modern, memory-safe implementation. It leverages hardware-assisted virtualization to provide a robust execution environment for untrusted code.

🌟 Core Philosophy

  • Security First: Built with Rust's memory safety guarantees. Each virtual device can be run in its own sandboxed process with restricted system access.
  • Isolation: Uses Linux namespaces, seccomp filters, and Minijail to create a multi-layered security boundary.
  • Performance: Optimized for modern workloads with features like io_uring, vhost, and an internal async runtime (cros_async).
  • Portability: Supports multiple CPU architectures and hypervisor backends.

🛠️ Technical Specifications

Supported Architectures

  • x86_64
  • aarch64
  • riscv64

Supported Hypervisors

  • Linux/Android: KVM, Gunyah (Qualcomm), GenieZone (MediaTek), Halla (Exynos).
  • Windows: WHPX (Windows Hypervisor Platform), HAXM (Intel).

Virtio Device Support

crosvm implements a wide range of paravirtualized devices via the virtio standard:

  • Network: virtio-net with optional vhost and slirp backends.
  • Storage: virtio-block supporting raw, qcow2, zstd, and Android sparse formats.
  • Graphics: virtio-gpu with 2D and 3D acceleration (via virglrenderer, gfxstream, or vulkano).
  • Display/Input: Integrated virtio gpu cross domain support for wayland passthrough
  • Audio: virtio-snd with backends for CRAS (ChromeOS), AAudio (Android), and more.
  • File System: virtio-fs and virtio-9p.
  • Other: Console, RNG, Balloon, Vsock, TPM, Pmem, Video Decoder/Encoder, etc.

🔒 Security Architecture

crosvm is designed with a “process-per-device” model:

  1. Main Process: Handles VM initialization and core orchestration.
  2. Device Processes: Each virtio device can be forked into its own process.
  3. Sandboxing: Each device process is jailed using Minijail:
    • Namespaces: VFS (pivot_root), PID, User, and Network isolation.
    • Seccomp: Strict BPF filters restrict syscalls to only those required by the specific device.
    • Capabilities: All unnecessary Linux capabilities are dropped.

📖 Documentation

🚀 Getting Started

The recommended way to build and develop crosvm is using the provided development container.

Prerequisites

  • Linux: A modern kernel (5.x+) with KVM access.
  • Podman or Docker: Installed and configured.

Building

Use the dev container to build a release version of crosvm:

./tools/dev_container ./tools/build_release

Basic Usage

Follow this example usage to run a simple Linux guest.

🤝 Community & Support

crosvm is an open-source project licensed under the BSD-3-Clause License.