[PATCH 0/2] more migration vs CPU hotplug fixes

Nathan Lynch nathanl at linux.ibm.com
Fri Jul 19 05:29:38 AEST 2019

Despite recent fixes, userspace-initiated CPU hotplug still can
destructively race with the migration code's CPU state manipulations
on the destination. Also, since such manipulations can consist of
mass-onlining and -offlining half or more of the CPUs in the system,
take care to reschedule when needed.

Nathan Lynch (2):
  powerpc/rtas: use device model APIs and serialization during LPM
  powerpc/rtas: allow rescheduling while changing cpu states

 arch/powerpc/kernel/rtas.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)


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