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arm64/mm: enable HugeTLB migration 

Let arm64 subscribe to generic HugeTLB page migration framework.  Right
now this only works on the following PMD and PUD level HugeTLB page
sizes with various kernel base page size combinations.

         CONT PTE    PMD    CONT PMD    PUD
         --------    ---    --------    ---
  4K:         NA     2M         NA      1G
  16K:        NA    32M         NA
  64K:        NA   512M         NA

Link: http://lkml.kernel.org/r/1545121450-1663-5-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Steve Capper <steve.capper@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Anshuman Khandual 2019-03-05 15:43:55 -08:00 committed by Linus Torvalds
parent e693de1864
commit 4a03a058d1
1 changed files with 4 additions and 0 deletions
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4
arch/arm64/Kconfig
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@ -1467,6 +1467,10 @@ config SYSVIPC_COMPAT
def_bool y def_bool y
depends on COMPAT && SYSVIPC depends on COMPAT && SYSVIPC
config ARCH_ENABLE_HUGEPAGE_MIGRATION
def_bool y
depends on HUGETLB_PAGE && MIGRATION
menu "Power management options" menu "Power management options"
source "kernel/power/Kconfig" source "kernel/power/Kconfig"