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 4.9-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-4.9 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 @@ -124,6 +124,7 @@ 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); } @@ -147,6 +148,7 @@ 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-4.9/powerpc-hotplug-mem-fix-missing-endian-conversion-of-aa_index.patch