|
@@ -210,13 +210,15 @@ If memory device is found, memory hotplug code will be called.
|
|
|
|
|
|
4.2 Notify memory hot-add event by hand
|
|
|
------------
|
|
|
-In some environments, especially virtualized environment, firmware will not
|
|
|
-notify memory hotplug event to the kernel. For such environment, "probe"
|
|
|
-interface is supported. This interface depends on CONFIG_ARCH_MEMORY_PROBE.
|
|
|
-
|
|
|
-Now, CONFIG_ARCH_MEMORY_PROBE is supported only by powerpc but it does not
|
|
|
-contain highly architecture codes. Please add config if you need "probe"
|
|
|
-interface.
|
|
|
+On powerpc, the firmware does not notify a memory hotplug event to the kernel.
|
|
|
+Therefore, "probe" interface is supported to notify the event to the kernel.
|
|
|
+This interface depends on CONFIG_ARCH_MEMORY_PROBE.
|
|
|
+
|
|
|
+CONFIG_ARCH_MEMORY_PROBE is supported on powerpc only. On x86, this config
|
|
|
+option is disabled by default since ACPI notifies a memory hotplug event to
|
|
|
+the kernel, which performs its hotplug operation as the result. Please
|
|
|
+enable this option if you need the "probe" interface for testing purposes
|
|
|
+on x86.
|
|
|
|
|
|
Probe interface is located at
|
|
|
/sys/devices/system/memory/probe
|