linux-kernel - [PATCH 0/2] powerpc/dlpar: Correct display of hot-add/hot-remove CPUs and memory

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Message-Id: <790af26b-7055-7997-2080-f967aef2d26d@linux.vnet.ibm.com>
Date:   Tue, 23 May 2017 10:15:11 -0500
From:   Michael Bringmann <mwb@...ux.vnet.ibm.com>
To:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Reza Arbab <arbab@...ux.vnet.ibm.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Bharata B Rao <bharata@...ux.vnet.ibm.com>,
        Balbir Singh <bsingharora@...il.com>,
        Nathan Fontenot <nfont@...ux.vnet.ibm.com>,
        Michael Bringmann <mwb@...ux.vnet.ibm.com>,
        Shailendra Singh <shailendras@...dia.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Andrew Donnellan <andrew.donnellan@....ibm.com>,
        John Allen <jallen@...ux.vnet.ibm.com>,
        Tyrel Datwyler <tyreld@...ux.vnet.ibm.com>,
        Sahil Mehta <sahilmehta17@...il.com>,
        Rashmica Gupta <rashmicy@...il.com>,
        Ingo Molnar <mingo@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH 0/2] powerpc/dlpar: Correct display of hot-add/hot-remove CPUs
 and memory

powerpc/numa: Correct the currently broken capability to set the
topology for shared CPUs in LPARs.  At boot time for shared CPU
lpars, the topology for each shared CPU is set to node zero, however,
this is now updated correctly using the Virtual Processor Home Node
(VPHN) capabilities information provided by the pHyp. The VPHN handling
in Linux is disabled, if PRRN handling is present.

powerpc/hotplug-memory: Removing or adding memory via the PowerPC
hotplug interface shows anomalies in the association between memory
and nodes.  The code was updated to better take advantage of defined
nodes in order to associate memory to nodes not needed at boot time,
but relevant to dynamically added memory.

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

Michael Bringmann (2):
  powerpc/numa: Update CPU topology when VPHN enabled
  powerpc/hotplug-memory: Fix hot-add memory node assoc
---