CONFIG_LIVEUPDATE: Live Update Orchestrator

General informations

The Linux kernel configuration item CONFIG_LIVEUPDATE:

• prompt: Live Update Orchestrator
• type: bool
• depends on: ( CONFIG_KEXEC_HANDOVER ) && ( CONFIG_SHMEM )
• defined in kernel/liveupdate/Kconfig
• found in Linux kernels: 6.19-rc+HEAD

Help text

Enable the Live Update Orchestrator. Live Update is a mechanism, typically based on kexec, that allows the kernel to be updated while keeping selected devices operational across the transition. These devices are intended to be reclaimed by the new kernel and re-attached to their original workload without requiring a device reset.

Ability to handover a device from current to the next kernel depends on specific support within device drivers and related kernel subsystems.

This feature primarily targets virtual machine hosts to quickly update the kernel hypervisor with minimal disruption to the running virtual machines.

If unsure, say N.

Hardware

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