[PATCH 0/3] live partition migration vs cacheinfo

[Nathan Lynch]

Partition migration often results in the platform telling the OS to
replace all the cache nodes in the device tree. The cacheinfo code has
no knowledge of this, and continues to maintain references to the
deleted/detached nodes, causing subsequent CPU online/offline
operations to get warnings and oopses. This series addresses this
longstanding issue by providing an interface to the cacheinfo layer
that the migration code uses to rebuild the cacheinfo data structures
at a safe time after migration, with appropriate serialization vs CPU
hotplug.


Nathan Lynch (3):
  powerpc/cacheinfo: add cacheinfo_teardown, cacheinfo_rebuild
  powerpc/pseries/mobility: prevent cpu hotplug during DT update
  powerpc/pseries/mobility: rebuild cacheinfo hierarchy post-migration

 arch/powerpc/kernel/cacheinfo.c           | 21 +++++++++++++++++++++
 arch/powerpc/kernel/cacheinfo.h           |  4 ++++
 arch/powerpc/platforms/pseries/mobility.c | 19 +++++++++++++++++++
 3 files changed, 44 insertions(+)

-- 
2.20.1