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hot-plugging a cpu for ubuntu23.04 vm running on ESXi is failed, below
logs is reported in kern.log
2023-04-07T22:10:15.427140+00:00 vmware-server kernel: [ 123.514678] APIC:
NR_CPUS/possible_cpus limit of 3 reached. Processor 3/0x6 ignored.
2023-04-07T22:10:15.427903+00:00 vmware-server kernel: [ 123.514682] ACPI:
Unable to map lapic to logical cpu number
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running "chcpu -e 4", "chcpu: CPU 4 does not exist"
after reboot the VM, the hot-plugged cpu can be detected by default.
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other information:
This isue cannot be reproduced in ubuntu22.04.2 LTS
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: bot-comment
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cannot hotplug a cpu for ubuntu23.04 VM running on ESXi
https://bugs.launchpad.net/bugs/2015608
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