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| author | Oscar Salvador <osalvador@suse.de> | 2021-05-04 18:39:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-05-05 11:27:27 -0700 |
| commit | e3a9d9fcc3315993de2e9fcd7ea82fab84433815 (patch) | |
| tree | 0ae5712c9f1a5b34f8f485bf05887e983b652d1c /lib/test_firmware.c | |
| parent | 4a3e5de9c4ec41bb0684b0d4e0c16abc39617d88 (diff) | |
| download | linux-e3a9d9fcc3315993de2e9fcd7ea82fab84433815.tar.bz2 | |
mm,memory_hotplug: add kernel boot option to enable memmap_on_memory
Self stored memmap leads to a sparse memory situation which is
unsuitable for workloads that requires large contiguous memory chunks,
so make this an opt-in which needs to be explicitly enabled.
To control this, let memory_hotplug have its own memory space, as
suggested by David, so we can add memory_hotplug.memmap_on_memory
parameter.
Link: https://lkml.kernel.org/r/20210421102701.25051-7-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/test_firmware.c')
0 files changed, 0 insertions, 0 deletions