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authorReza Arbab <arbab@linux.vnet.ibm.com>2016-12-13 03:43:06 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-13 05:55:07 +0300
commitc3352cbb1bdf198e81141700eb7003b8e2de1f1a (patch)
treef0ee23270b676598796a7cc0ef6e1cdd619aef7e
parent41a9ada3e6b4253f1a3ce42699c6aaeb8584306c (diff)
downloadlinux-c3352cbb1bdf198e81141700eb7003b8e2de1f1a.tar.xz
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@linux.vnet.ibm.com Signed-off-by: Reza Arbab <arbab@linux.vnet.ibm.com> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alistair Popple <apopple@au1.ibm.com> Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bharata B Rao <bharata@linux.vnet.ibm.com> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nathan Fontenot <nfont@linux.vnet.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Stewart Smith <stewart@linux.vnet.ibm.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--Documentation/devicetree/booting-without-of.txt7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/devicetree/booting-without-of.txt b/Documentation/devicetree/booting-without-of.txt
index 3f1437fbca6b..280d283304bb 100644
--- a/Documentation/devicetree/booting-without-of.txt
+++ b/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