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From: Michael Bringmann <mwb@linux.vnet.ibm.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Michael Ellerman <mpe@ellerman.id.au>,
	Michael Bringmann <mwb@linux.vnet.ibm.com>,
	Nathan Fontenot <nfont@linux.vnet.ibm.com>,
	John Allen <jallen@linux.vnet.ibm.com>,
	Tyrel Datwyler <tyreld@linux.vnet.ibm.com>,
	Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Subject: [PATCH V2 0/3] powerpc/hotplug: Fix affinity assoc for LPAR migration
Date: Thu, 16 Nov 2017 11:50:11 -0600	[thread overview]
Message-ID: <030d7727-9b39-f9ab-53e6-6a47605ac6b3@linux.vnet.ibm.com> (raw)

The migration of LPARs across Power systems affects many attributes
including that of the associativity of memory blocks and CPUs.  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 and CPUs recorded
  in internal data structures when compared to the latest copies in
  the device tree (e.g. ibm,dynamic-memory, ibm,dynamic-memory-v2,
  cpus),
* 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 the CPUs and memory.
* Re-register the 'changed' entities into the target system.
  Re-registration of CPUs and memory blocks mostly entails acting as
  if they have been newly hot-added into the target system.

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

Michael Bringmann (3):
  hotplug/mobility: Apply assoc lookup updates for Post Migration Topo
  postmigration/memory: Review assoc lookup array changes
  postmigration/memory: Associativity & 'ibm,dynamic-memory-v2'
---
Changes in V2:
  -- Try to improve patch header documentation.
  -- Remove unnecessary spacing changes from patch

             reply	other threads:[~2017-11-16 17:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-16 17:50 Michael Bringmann [this message]
2017-11-16 17:50 ` [PATCH V2 1/3] hotplug/mobility: Apply assoc updates for Post Migration Topo Michael Bringmann
2017-11-20 16:04   ` Nathan Fontenot
2017-11-27 19:52     ` Michael Bringmann
2017-11-16 17:51 ` [PATCH V2 2/3] postmigration/memory: Review assoc lookup array changes Michael Bringmann
2017-11-16 17:51 ` [PATCH V2 3/3] postmigration/memory: Associativity & ibm,dynamic-memory-v2 Michael Bringmann
2017-11-20 16:14   ` Nathan Fontenot
2017-11-27 19:53     ` Michael Bringmann
2017-11-28 22:30 ` [PATCH V2 0/3] powerpc/hotplug: Fix affinity assoc for LPAR migration Michael Bringmann

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