Public bug reported:
While Hyper-V may present all potential CPUs via ACPI MADT, CPU
add/remove is not supported. This results in kernel data structures
created for the largest potential size based on the number of CPUs when
those CPUs will never be added during the time the guest is up (it can
certainly be resized when it's down and deallocated). Please disable
CONFIG_HOTPLUG_CPU in linux-azure.
** Affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1776293
Title:
[Hyper-V] Disable CONFIG_HOTPLUG_CPU in linux-azure
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