Sysfs memory probe interface (/sys/devices/system/memory/probe) can accept starting physical address of an entire memory block to be hot added into the kernel. This is in addition to the existing ACPI based interface. This just enables it with the required config CONFIG_ARCH_MEMORY_PROBE. Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx> --- arch/arm64/Kconfig | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7e34b9e..a2418fb 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -266,6 +266,15 @@ config HAVE_GENERIC_GUP config ARCH_ENABLE_MEMORY_HOTPLUG def_bool y +config ARCH_MEMORY_PROBE + bool "Enable /sys/devices/system/memory/probe interface" + depends on MEMORY_HOTPLUG + help + This option enables a sysfs /sys/devices/system/memory/probe + interface for testing. See Documentation/memory-hotplug.txt + for more information. If you are unsure how to answer this + question, answer N. + config SMP def_bool y -- 2.7.4
