This is a note to let you know that I've just added the patch titled
powerpc/hotplug-mem: Fix missing endian conversion of aa_index
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-hotplug-mem-fix-missing-endian-conversion-of-aa_index.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dc421b200f91930c9c6a9586810ff8c232cf10fc Mon Sep 17 00:00:00 2001
From: Michael Bringmann <mwb@xxxxxxxxxxxxxxxxxx>
Date: Mon, 22 May 2017 15:44:37 -0500
Subject: powerpc/hotplug-mem: Fix missing endian conversion of aa_index
From: Michael Bringmann <mwb@xxxxxxxxxxxxxxxxxx>
commit dc421b200f91930c9c6a9586810ff8c232cf10fc upstream.
When adding or removing memory, the aa_index (affinity value) for the
memblock must also be converted to match the endianness of the rest
of the 'ibm,dynamic-memory' property. Otherwise, subsequent retrieval
of the attribute will likely lead to non-existent nodes, followed by
using the default node in the code inappropriately.
Fixes: 5f97b2a0d176 ("powerpc/pseries: Implement memory hotplug add in the kernel")
Signed-off-by: Michael Bringmann <mwb@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/pseries/hotplug-memory.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -110,6 +110,7 @@ static struct property *dlpar_clone_drco
for (i = 0; i < num_lmbs; i++) {
lmbs[i].base_addr = be64_to_cpu(lmbs[i].base_addr);
lmbs[i].drc_index = be32_to_cpu(lmbs[i].drc_index);
+ lmbs[i].aa_index = be32_to_cpu(lmbs[i].aa_index);
lmbs[i].flags = be32_to_cpu(lmbs[i].flags);
}
@@ -553,6 +554,7 @@ static void dlpar_update_drconf_property
for (i = 0; i < num_lmbs; i++) {
lmbs[i].base_addr = cpu_to_be64(lmbs[i].base_addr);
lmbs[i].drc_index = cpu_to_be32(lmbs[i].drc_index);
+ lmbs[i].aa_index = cpu_to_be32(lmbs[i].aa_index);
lmbs[i].flags = cpu_to_be32(lmbs[i].flags);
}
Patches currently in stable-queue which might be from mwb@xxxxxxxxxxxxxxxxxx are
queue-4.4/powerpc-hotplug-mem-fix-missing-endian-conversion-of-aa_index.patch