|tagger||The Android Open Source Project <firstname.lastname@example.org>||Fri Feb 03 17:02:07 2023 -0800|
Platform Tools Release 34.0.0 (9560563)
|author||Android Build Coastguard Worker <email@example.com>||Wed Feb 01 11:36:20 2023 +0000|
|committer||Gerrit Code Review <firstname.lastname@example.org>||Wed Feb 01 11:36:20 2023 +0000|
Merge "Snap for 9550355 from ca3b60361256cc97d839b2e235f78cc2f45d52d8 to sdk-release" into sdk-release
This document introduces special GSI settings for facilitating xTS-on-GSI with a single image.
[BoardConfigGsiCommon.mk] BOARD_USES_SYSTEM_DLKMIMAGE := true BOARD_SYSTEM_DLKMIMAGE_FILE_SYSTEM_TYPE := ext4 TARGET_COPY_OUT_SYSTEM_DLKM := system_dlkm [gsi_release.mk] PRODUCT_BUILD_SYSTEM_DLKM_IMAGE := false
Starting from Android 13, all devices must include a system_dlkm partition. GSI enables system_dlkm to support the devices with system_dlkm partition, and be compatible with old devices without a system_dlkm partition.
With these configurations,
/system/system_dlkm would not be created. Instead, a
/system_dlkm/lib/modules symlink is created.
For device without system_dlkm partition, the symlink would be dangling. The dangling symlink shouldn‘t be followed anyway because the device doesn’t use system_dlkm.
For device with system_dlkm, they can load modules via that path normally like when they are using their original system image.
Some devices access the private android framework resource by
@*android: while overlaying their SystemUI setting
status_bar_header_height_keyguard. However, referencing private framework resource IDs from RRO packages in the vendor partition crashes on these devices when GSI is used. This is because private framework resource don't have a stable ID, and these vendor RRO packages would be referencing to dangling resource references after GSI is used (b/245806899).
In order to prevent SystemUI crash, GSI adds a runtime resource overlay in the system_ext partition, which have higher overlay precedence than RROs on vendor partition, so the problematic vendor RROs would be overridden.
Lifetime of this package: