[[["เข้าใจง่าย","easyToUnderstand","thumb-up"],["แก้ปัญหาของฉันได้","solvedMyProblem","thumb-up"],["อื่นๆ","otherUp","thumb-up"]],[["ไม่มีข้อมูลที่ฉันต้องการ","missingTheInformationINeed","thumb-down"],["ซับซ้อนเกินไป/มีหลายขั้นตอนมากเกินไป","tooComplicatedTooManySteps","thumb-down"],["ล้าสมัย","outOfDate","thumb-down"],["ปัญหาเกี่ยวกับการแปล","translationIssue","thumb-down"],["ตัวอย่าง/ปัญหาเกี่ยวกับโค้ด","samplesCodeIssue","thumb-down"],["อื่นๆ","otherDown","thumb-down"]],["อัปเดตล่าสุด 2025-07-27 UTC"],[],[],null,["# Overview\n\n*Virtualization* allows single or multiple instances of the Android Automotive OS (AAOS)\nto run as a guest virtual machine (VM) alongside other automotive operating such as an\ninstrument cluster or an instance of OS running the advanced driver assistance systems (ADAS)\non an automotive System-On-Chip (SoC). This is achieved by leveraging an open-standards\nbased framework for virtualization called *VirtIO*.\nVirtIO provides a well-established interface that enables AAOS to run against a common\nvirtualized platform that, in turn, allows an AAOS guest VM to be portable across different\nhypervisor systems and/or hardware platforms.\n**Figure 1.** AAOS virtualization architecture\n\nTo enable automotive use cases, the VirtIO specification has been extended to include devices\nsuch as\n[virtio-snd](https://github.com/oasis-tcs/virtio-spec) for audio,\n[virtio-scmi](https://github.com/oasis-tcs/virtio-spec)\nfor sensors, power state management, clock management, and performance management,\nand [virtio-video](http://archive.lwn.net:8080/linux-media/6557912.4vTCxPXJkl@os-lin-dmo/T/)\nfor playback use cases. VirtIO drivers corresponding to these devices have also been added to the\nLinux kernel\n([virtio-snd driver](https://elixir.bootlin.com/linux/v5.13/source/sound/virtio),\n[IIO SCMI\nSensor driver](https://elixir.bootlin.com/linux/v5.13/source/drivers/iio/common/scmi_sensors), and\n[virtio-video driver](https://github.com/OpenSynergy/android-kernel-common/tree/opsy/android11-5.4-trout/drivers/media/virtio)).\n\nAAOS provides a reference device called\n*[*trout*](https://android.googlesource.com/device/google/trout/)*,\nwhich supports virtualized subsystems, such as:\n\n- Audio\n- Dumpstate\n- Extended View System (EVS)\n- Garage Mode\n- Graphics\n- Sensors\n- Touchscreen input\n- Vehicle HAL\n- Bluetooth\n- Global navigation satellite system (GNSS)\n\nSee these articles to learn more about Virtualization on AAOS:\n\n- [Architecture](/docs/automotive/virtualization/architecture)\n- [Tools](/docs/automotive/virtualization/tools)\n- [Reference platform](/docs/automotive/virtualization/reference_platform)"]]
