Starting March 27, 2025, we recommend using android-latest-release instead of aosp-main to build and contribute to AOSP. For more information, see Changes to AOSP.
Use Cuttlefish with 16 KB page size on ARM64
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This setup requires an ARM64 Linux host. This page shows how to build and
start Cuttlefish with 16 KB page size support on ARM64. The instructions on
this page assume that Cuttlefish packages are installed in your machine. For
instructions to install them, see Step 1 of Install Cuttlefish.
You can launch Cuttlefish by either downloading the prebuilt
artifacts directly from the Android Continuous
Integration site or build them from AOSP if you need to modify
the source code.
Launch Cuttlefish by downloading the artifacts
Navigate to Android Continuous Integration site and
enter aosp-main-throttled as the branch name. Click the latest build for the
aosp_cf_arm64_phone_pgagnostic target. Now, follow the instructions from Step
5 of Install Cuttlefish.
Launch Cuttlefish by building from AOSP
Build and launch Cuttlefish with a page-agnostic target:
$ mkdir android-latest-branch && cd android-latest-branch
$ repo init -u https://android.googlesource.com/platform/manifest -b android-latest-release
$ repo sync -c -j32
# Build cf agnostic target.
$ source build/envsetup.sh
$ lunch aosp_cf_arm64_phone_pgagnostic-trunk_staging-userdebug
$ m
# Launch cf with a kernel with 16 KB page size support.
$ launch_cvd
...
...
VIRTUAL_DEVICE_DISPLAY_POWER_MODE_CHANGED
virtio_input_hid_handle_status: unknown type 20
virtio_input_hid_handle_status: unknown type 20
virtio_input_hid_handle_status: unknown type 20
virtio_input_hid_handle_status: unknown type 20
Generating new secret with slot ID: 4
VIRTUAL_DEVICE_BOOT_STARTED
VIRTUAL_DEVICE_NETWORK_MOBILE_CONNECTED
Verify page size and boot
To verify page size and boot status:
Access the shell as root:
$ adb root
adbd is already running as root
$ adb shell
vsoc_arm64_pgagnostic:/ #
Verify page size and boot status:
vsoc_arm64_pgagnostic:/ # getconf PAGE_SIZE
16384
vsoc_arm64_pgagnostic:/ # getprop | grep sys.boot.completed
sys.boot_completed: 1
Use Cuttlefish with custom 16 KB page size kernel
To use a custom kernel, instead of a prebuilt kernel:
Create a repo directory for an android common kernel and sync the directory:
$ mkdir common-android14-6.1 && cd common-android14-6.1
$ repo init -u https://android.googlesource.com/kernel/manifest -b common-android14-6.1
$ repo sync -c -j$(nproc)
Build 16 KB page size kernel:
$ tools/bazel run --lto=none //common:kernel_aarch64_16k_dist
$ tools/bazel run --lto=none //common-modules/virtual-device:virtual_device_aarch64_16k_dist -- \
--dist_dir=out/android14-6.1/dist
Verify that the build executed successfully:
# Generated files
$ ls out/android14-6.1/dist/Image
$ ls out/android14-6.1/dist/initramfs.img
Start Cuttlefish with the custom 16 KB page size kernel
To use your newly built kernel in Cuttlefish:
$ launch_cvd -kernel_path ~/common-android14-6.1/out/android14-6.1/dist/Image \
-initramfs_path ~/common-android14-6.1/out/android14-6.1/dist/initramfs.img \
--resume=false --userdata_format=ext4 \
--data_policy=always_create --blank_data_image_mb=8000
-userdata_format=ext4
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-06-12 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-06-12 UTC."],[],[],null,["# Use Cuttlefish with 16 KB page size on ARM64\n\nThis setup requires an `ARM64` Linux host. This page shows how to build and\nstart Cuttlefish with 16 KB page size support on `ARM64`. The instructions on\nthis page assume that Cuttlefish packages are installed in your machine. For\ninstructions to install them, see Step 1 of [Install Cuttlefish](/docs/devices/cuttlefish/get-started#launch).\n\nYou can launch Cuttlefish by either [downloading the prebuilt\nartifacts](#download-build-artifacts) directly from the Android Continuous\nIntegration site or [build them from AOSP](#sync-build) if you need to modify\nthe source code.\n\nLaunch Cuttlefish by downloading the artifacts\n----------------------------------------------\n\nNavigate to [Android Continuous Integration site](https://ci.android.com) and\nenter `aosp-main-throttled` as the branch name. Click the latest build for the\n`aosp_cf_arm64_phone_pgagnostic` target. Now, follow the instructions from Step\n5 of [Install Cuttlefish](/docs/devices/cuttlefish/get-started#launch).\n\nLaunch Cuttlefish by building from AOSP\n---------------------------------------\n\nBuild and launch Cuttlefish with a page-agnostic target: \n\n $ mkdir android-latest-branch && cd android-latest-branch\n $ repo init -u https://android.googlesource.com/platform/manifest -b android-latest-release\n $ repo sync -c -j32\n\n # Build cf agnostic target.\n $ source build/envsetup.sh\n $ lunch aosp_cf_arm64_phone_pgagnostic-trunk_staging-userdebug\n $ m\n\n # Launch cf with a kernel with 16 KB page size support.\n $ launch_cvd\n ...\n ...\n VIRTUAL_DEVICE_DISPLAY_POWER_MODE_CHANGED\n virtio_input_hid_handle_status: unknown type 20\n virtio_input_hid_handle_status: unknown type 20\n virtio_input_hid_handle_status: unknown type 20\n virtio_input_hid_handle_status: unknown type 20\n Generating new secret with slot ID: 4\n VIRTUAL_DEVICE_BOOT_STARTED\n VIRTUAL_DEVICE_NETWORK_MOBILE_CONNECTED\n\nVerify page size and boot\n-------------------------\n\nTo verify page size and boot status:\n\n1. Access the shell as root:\n\n $ adb root\n adbd is already running as root\n $ adb shell\n vsoc_arm64_pgagnostic:/ #\n\n2. Verify page size and boot status:\n\n vsoc_arm64_pgagnostic:/ # getconf PAGE_SIZE\n 16384\n vsoc_arm64_pgagnostic:/ # getprop | grep sys.boot.completed\n sys.boot_completed: 1\n\nUse Cuttlefish with custom 16 KB page size kernel\n-------------------------------------------------\n\nTo use a custom kernel, instead of a prebuilt kernel:\n\n1. Create a repo directory for an android common kernel and sync the directory:\n\n $ mkdir common-android14-6.1 && cd common-android14-6.1\n $ repo init -u https://android.googlesource.com/kernel/manifest -b common-android14-6.1\n $ repo sync -c -j$(nproc)\n\n2. Build 16 KB page size kernel:\n\n $ tools/bazel run --lto=none //common:kernel_aarch64_16k_dist\n $ tools/bazel run --lto=none //common-modules/virtual-device:virtual_device_aarch64_16k_dist -- \\\n --dist_dir=out/android14-6.1/dist\n\n3. Verify that the build executed successfully:\n\n # Generated files\n $ ls out/android14-6.1/dist/Image\n $ ls out/android14-6.1/dist/initramfs.img\n\n### Start Cuttlefish with the custom 16 KB page size kernel\n\nTo use your newly built kernel in Cuttlefish: \n\n $ launch_cvd -kernel_path ~/common-android14-6.1/out/android14-6.1/dist/Image \\\n -initramfs_path ~/common-android14-6.1/out/android14-6.1/dist/initramfs.img \\\n --resume=false --userdata_format=ext4 \\\n --data_policy=always_create --blank_data_image_mb=8000\n -userdata_format=ext4"]]
