Hello, Recently we have announced our effort on that: https://lkml.org/lkml/2016/11/17/49
For now we have a working solution for hotplug and we are performing code cleanup to push the patches soon. BR, On 02/12/2016 01:19, Scott Branden wrote: > This patchset is sent for comment to add memory hotplug support for ARM64 > based platforms. It follows hotplug code added for other architectures > in the linux kernel. > > I tried testing the memory hotplug feature following documentation from > Documentation/memory-hotplug.txt. I don't think it is working as expected > - see below: > > To add memory to the system I did the following: > echo 0x400000000 > /sys/devices/system/memory/probe > > The memory is displayed as system ram: > cat /proc/iomem: > 74000000-77ffffff : System RAM > 74080000-748dffff : Kernel code > 74950000-749d2fff : Kernel data > 400000000-43fffffff : System RAM > > But does not seem to be added to the kernel memory. > /proc/meminfo did not change. > > What else needs to be done so the memory is added to the kernel memory > pool for normal allocation? > > Scott Branden (2): > arm64: memory-hotplug: Add MEMORY_HOTPLUG, MEMORY_HOTREMOVE, > MEMORY_PROBE > arm64: defconfig: enable MEMORY_HOTPLUG config options > > arch/arm64/Kconfig | 10 ++++++++++ > arch/arm64/configs/defconfig | 3 +++ > arch/arm64/mm/init.c | 42 ++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 55 insertions(+) > -- Maciej Bielski
