The patch titled
Subject: dt: add documentation of "hotpluggable" memory property
has been added to the -mm tree. Its filename is
dt-add-documentation-of-hotpluggable-memory-property.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/dt-add-documentation-of-hotpluggable-memory-property.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/dt-add-documentation-of-hotpluggable-memory-property.patch
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------------------------------------------------------
From: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
Subject: dt: add documentation of "hotpluggable" memory property
Summarize the "hotpluggable" property of dt memory nodes.
Link: http://lkml.kernel.org/r/1479160961-25840-6-git-send-email-arbab@xxxxxxxxxxxxxxxxxx
Signed-off-by: Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Alistair Popple <apopple@xxxxxxxxxxx>
Cc: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>
Cc: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Bharata B Rao <bharata@xxxxxxxxxxxxxxxxxx>
Cc: Frank Rowand <frowand.list@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Nathan Fontenot <nfont@xxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Stewart Smith <stewart@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/devicetree/booting-without-of.txt | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN Documentation/devicetree/booting-without-of.txt~dt-add-documentation-of-hotpluggable-memory-property Documentation/devicetree/booting-without-of.txt
--- a/Documentation/devicetree/booting-without-of.txt~dt-add-documentation-of-hotpluggable-memory-property
+++ a/Documentation/devicetree/booting-without-of.txt
@@ -974,6 +974,13 @@ compatibility.
4Gb. Some vendors prefer splitting those ranges into smaller
segments, but the kernel doesn't care.
+ Additional properties:
+
+ - hotpluggable : The presence of this property provides an explicit
+ hint to the operating system that this memory may potentially be
+ removed later. The kernel can take this into consideration when
+ doing nonmovable allocations and when laying out memory zones.
+
e) The /chosen node
This node is a bit "special". Normally, that's where Open Firmware
_
Patches currently in -mm which might be from arbab@xxxxxxxxxxxxxxxxxx are
powerpc-mm-allow-memory-hotplug-into-a-memoryless-node.patch
mm-remove-x86-only-restriction-of-movable_node.patch
mm-enable-config_movable_node-on-non-x86-arches.patch
of-fdt-mark-hotpluggable-memory.patch
dt-add-documentation-of-hotpluggable-memory-property.patch
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