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RFC mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK

David Hildenbrand linux-mm lkml 1 version In review

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Versions newest first

  1. v1 RFC Latest2 patches 11 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/2mm/memory_hotplug: no need to init new pgdat with node_start_pfnmm/memory_hotplug.c+6 -98 replies
2/2mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCKmm/Kconfig mm/memory_hotplug.c+10 -63 replies

Reviews trailers per patch

All 2 patches have a Reviewed-by or Acked-by.

PatchPankaj GuptaMike RapoportMichal Hocko
1/2A-b
2/2A-b A-b

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes. Scroll the table sideways for all 3 reviewers.

Read the v1 thread

Cover letter [PATCH RFC 0/2] mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK

While working on some other cleanups I stumbled over the creation/removal of memblocks in hotplug code and wondered why we still need that. Turns out, we only need that handling with CONFIG_ARCH_KEEP_MEMBLOCK - unless I am missing something important (-> RFC).

I'll be sending out patches to remove CONFIG_ARCH_KEEP_MEMBLOCK on s390x soonish, after finding a way to test them.

Gave it a quick test on x86-64.

David Hildenbrand (2):
mm/memory_hotplug: no need to init new pgdat with node_start_pfn mm/memory_hotplug: handle memblocks only with
CONFIG_ARCH_KEEP_MEMBLOCK

 mm/Kconfig          |  3 +++
 mm/memory_hotplug.c | 28 +++++++++++++---------------
 2 files changed, 16 insertions(+), 15 deletions(-)
Signature · 1 line
2.25.1