arm64: hugetlb: Register hugepages during arch init

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Add hstate for each supported hugepage size using arch initcall.

* no hugepage parameters

  Without hugepage parameters, only a default hugepage size is
  available for dynamic allocation.  It's different, for example, from
  x86_64 and sparc64 where all supported hugepage sizes are available.

* only default_hugepagesz= is specified and set not to HPAGE_SIZE

  In spite of the fact that default_hugepagesz= is set to a valid
  hugepage size, it's treated as unsupported and reverted to
  HPAGE_SIZE.  Such behaviour is also different from x86_64 and
  sparc64.

Acked-by: Steve Capper <steve.capper@arm.com>
Reviewed-by: Tom Saeger <tom.saeger@oracle.com>
Signed-off-by: Dmitry Klochkov <dmitry.klochkov@oracle.com>
Signed-off-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

...

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Allen Pais 2018-10-23 06:36:57 +05:30 • committed by Will Deacon

parent cc9f8349cb

commit a21b0b78ea

1 changed files with 22 additions and 11 deletions

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arch/arm64/mm/hugetlbpage.c

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