[Bionic SRU][Patch 0/2] ARM64: fix potential system hang on CPU

Manoj Iyer manoj.iyer at canonical.com
Fri Oct 12 17:48:43 UTC 2018


Please consider the following patches that addresses a potential issue
where system could hang or crash during CPU hotplug on ARM64 systems.
This issue is tracked in bugs:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1797200
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1797202

The patches were tested by me on Cavium Thunder X2 CN99XX systems and no
regressions were found. Note that the crash/hang is hard to reproduce
depends on some unique numa setup, therefore a before/after results are
not avaialble. Please refer to the bug reports for the testcase used and
test results. 






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