kernel/Documentation/core-api/memory-hotplug.rst, branch linux-5.18.y

mm/memory_hotplug: remove HIGHMEM leftovers

2021-11-06T20:30:42Z

We don't support CONFIG_MEMORY_HOTPLUG on 32 bit and consequently not HIGHMEM. Let's remove any leftover code -- including the unused "status_change_nid_high" field part of the memory notifier. Link: https://lkml.kernel.org/r/20210929143600.49379-5-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Oscar Salvador Cc: Alex Shi Cc: Andy Lutomirski Cc: Benjamin Herrenschmidt Cc: Borislav Petkov Cc: Dave Hansen Cc: Greg Kroah-Hartman Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Jason Wang Cc: Jonathan Corbet Cc: Michael Ellerman Cc: "Michael S. Tsirkin" Cc: Michal Hocko Cc: Mike Rapoport Cc: Paul Mackerras Cc: Peter Zijlstra Cc: "Rafael J. Wysocki" Cc: Shuah Khan Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

docs/core-api: memory-hotplug: add some details about locking internals

2018-10-12T17:14:19Z

Let's document the magic a bit, especially why device_hotplug_lock is required when adding/removing memory and how it all play together with requests to online/offline memory from user space. [ rppt: moved the text to Documentation/core-api/memory-hotplug.rst ] Link: http://lkml.kernel.org/r/20180925091457.28651-7-david@redhat.com Signed-off-by: David Hildenbrand Reviewed-by: Pavel Tatashin Reviewed-by: Rashmica Gupta Cc: Jonathan Corbet Cc: Michal Hocko Cc: Balbir Singh Cc: Benjamin Herrenschmidt Cc: Boris Ostrovsky Cc: Dan Williams Cc: Greg Kroah-Hartman Cc: Haiyang Zhang Cc: Heiko Carstens Cc: John Allen Cc: Joonsoo Kim Cc: Juergen Gross Cc: Kate Stewart Cc: "K. Y. Srinivasan" Cc: Len Brown Cc: Martin Schwidefsky Cc: Mathieu Malaterre Cc: Michael Ellerman Cc: Michael Neuling Cc: Nathan Fontenot Cc: Oscar Salvador Cc: Paul Mackerras Cc: Philippe Ombredanne Cc: Rafael J. Wysocki Cc: "Rafael J. Wysocki" Cc: Stephen Hemminger Cc: Thomas Gleixner Cc: Vlastimil Babka Cc: YASUAKI ISHIMATSU Signed-off-by: Andrew Morton Signed-off-by: Mike Rapoport Signed-off-by: Jonathan Corbet

docs/core-api: rename memory-hotplug-notifier to memory-hotplug

2018-10-12T17:13:57Z

to allow additions of new documentation about memory hotplug under the same roof. Signed-off-by: Mike Rapoport Reviewed-by: David Hildenbrand Signed-off-by: Jonathan Corbet