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| author | Joel Fernandes (Google) <joel@joelfernandes.org> | 2018-11-17 13:35:22 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2018-11-19 07:24:43 +1100 |
| commit | 1227d0d6d405c2b95fc5e040c8c299c4f4ec24c0 (patch) | |
| tree | 1a9e117651d0af355e67fbb33c628dc05ee48655 /arch/x86 | |
| parent | 9e8d04bcca76f7b17aaad57323b4f85b1c1fcee1 (diff) | |
| download | linux-next-1227d0d6d405c2b95fc5e040c8c299c4f4ec24c0.tar.gz | |
mm: select HAVE_MOVE_PMD on x86 for faster mremap
Moving page-tables at the PMD-level on x86 is known to be safe. Enable
this option so that we can do fast mremap when possible.
Link: http://lkml.kernel.org/r/20181108181201.88826-4-joelaf@google.com
Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Suggested-by: Kirill A. Shutemov <kirill@shutemov.name>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9d734f3c8234..422d160a75c3 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -173,6 +173,7 @@ config X86 select HAVE_MEMBLOCK_NODE_MAP select HAVE_MIXED_BREAKPOINTS_REGS select HAVE_MOD_ARCH_SPECIFIC + select HAVE_MOVE_PMD select HAVE_NMI select HAVE_OPROFILE select HAVE_OPTPROBES |