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Xiaomi Alioth Kernel

Android 4.19 Non-GKI kernel tree for Redmi K40 / POCO F3 / Mi 11X (alioth / aliothin).

Status

  • Linux upstream: 4.19.325
  • ACK branch: android-4.19-stable
  • ACK extra branch: android-trusty-4.19
  • Qualcomm/CLO tag: LA.UM.9.12.r1-18500-SMxx50.QSSI14.0
  • Device platform: Xiaomi alioth, Qualcomm Kona / SM8250 family
  • ZSTD: backported to v1.5.5
  • Root compatibility: ReSukiSU manual-hook support
  • CPUFreq default governor: Ondemand
  • TCP congestion control: BBR2 is available and selected by alioth configs

Defconfigs

  • arch/arm64/configs/alioth_defconfig: main alioth build config.
  • arch/arm64/configs/alioth_hylab_defconfig: hylab build config. It is synced additively from alioth_defconfig, preserving hylab-specific choices.

Both alioth configs enable CONFIG_KSU_MANUAL_HOOK=y and CONFIG_KALLSYMS_ALL=y for ReSukiSU manual-hook compatibility. The old in-tree KernelSU driver entry is removed; ReSukiSU integration is expected to use manual hooks, LSM hooks, and input-handler hooks.

Build

Use an LLVM/Clang based Android kernel toolchain:

make O=out ARCH=arm64 LLVM=1 LLVM_IAS=1 \
  CROSS_COMPILE=aarch64-linux-gnu- \
  CROSS_COMPILE_COMPAT=arm-linux-gnueabi- \
  alioth_defconfig

make O=out ARCH=arm64 LLVM=1 LLVM_IAS=1 \
  CROSS_COMPILE=aarch64-linux-gnu- \
  CROSS_COMPILE_COMPAT=arm-linux-gnueabi- \
  -j$(nproc)

For the hylab config, replace alioth_defconfig with alioth_hylab_defconfig.

Notes

  • This tree carries Xiaomi device drivers and alioth-specific configuration.
  • ReSukiSU manual hooks are wired into syscall, stat, reboot, read/write, input, and LSM-related paths.
  • CONFIG_KALLSYMS_ALL=y is kept enabled to support static symbol lookup needed by ReSukiSU compatibility checks.