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[0/2] more migration vs CPU hotplug fixes

Message ID 20190718192940.16103-1-nathanl@linux.ibm.com (mailing list archive)
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Series more migration vs CPU hotplug fixes | expand

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Nathan Lynch July 18, 2019, 7:29 p.m. UTC 
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(-)