[Bug 1736393] Re: [Artful][Wyse 3040] System hang when trying to enable an offlined CPU core

Is it still necessary to carry the two commits as SAUCE? They never got
upstream.

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https://bugs.launchpad.net/bugs/1736393

Title:
[Artful][Wyse 3040] System hang when trying to enable an offlined CPU
core

Status in HWE Next:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem package in Ubuntu:
Invalid
Status in linux source package in Xenial:
Invalid
Status in linux-oem source package in Xenial:
Fix Released
Status in linux source package in Artful:
Fix Released
Status in linux-oem source package in Artful:
Invalid
Status in linux source package in Bionic:
Fix Released
Status in linux-oem source package in Bionic:
Invalid

Bug description:
1. disable cpu[1-3] $ echo 0 > /sys/devices/system/cpu/cpu[1-3]/online
2. enable cpu[1-3] $ echo 1 > /sys/devices/system/cpu/cpu[1-3]/online

System will hang on step 2.

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