[PATCH 3/5] [PPC] hotplug memory notifications for ppc

Hotplug memory notifier for ppc64. This gets invoked by writing the device-node that needs to be removed to /proc/ppc64/ofdt. We need to adjust the sections and remove sysfs entries by calling __remove_pages(). Then call arch specific code to get rid of htab mappings for the section of memory. Sig

[PATCH 3/5] [PPC] hotplug memory notifications for ppc

Hotplug memory notifier for ppc64. This gets invoked by writing the device-node that needs to be removed to /proc/ppc64/ofdt. We need to adjust the sections and remove sysfs entries by calling __remove_pages(). Then call arch specific code to get rid of htab mappings for the section of memory. Sig