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Subject: [PATCH v04 0/5] powerpc/migration: Affinity fix for memory
From: Michael Bringmann <mwb@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, mwb@linux.vnet.ibm.com
Date: Tue, 09 Oct 2018 15:35:36 -0500
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Cc: Juliet Kim <minkim@us.ibm.com>, Thomas Falcon <tlfalcon@linux.vnet.ibm.com>,
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 <linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org>

The migration of LPARs across Power systems affects many attributes
including that of the associativity of memory blocks.  The patches
in this set execute when a system is coming up fresh upon a migration
target.  They are intended to,

* Recognize changes to the associativity of memory recorded in
  internal data structures when compared to the latest copies in
  the device tree (e.g. ibm,dynamic-memory, ibm,dynamic-memory-v2).
* Recognize changes to the associativity mapping (e.g. ibm,
  associativity-lookup-arrays), locate all assigned memory blocks
  corresponding to each changed row, and readd all such blocks.
* Generate calls to other code layers to reset the data structures
  related to associativity of memory.
* Re-register the 'changed' entities into the target system.
  Re-registration of memory blocks mostly entails acting as if they
  have been newly hot-added into the target system.

This code builds upon features introduced in a previous patch set
that updates CPUs for affinity changes that may occur during LPM.

Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com>

Michael Bringmann (5):
  powerpc/drmem: Export 'dynamic-memory' loader
  powerpc/drmem: Add internal_flags feature
  migration/memory: Add hotplug flags READD_MULTIPLE
  migration/memory: Evaluate LMB assoc changes
  migration/memory: Support 'ibm,dynamic-memory-v2'
---
Changes in v04:
  -- Move dlpar_memory_readd_multiple() to patch with new ACTION
     constant.
  -- Move init of 'lmb->internal_flags' in init_drmem_v2_lmbs to
     patch with other references to flag.
  -- Correct spacing in one of the patches
Changes in v03:
  -- Change operation to tag changed LMBs in DRMEM array instead of
     queuing a potentially huge number of structures.
  -- Added another hotplug queue event for CPU/memory operations
  -- Added internal_flags feature to DRMEM
  -- Improve the patch description language for the patch set.
  -- Revise patch set to queue worker for memory association
     updates directly to pseries worker queue.