Commit 9f132f7e authored by Joel Fernandes (Google)'s avatar Joel Fernandes (Google) Committed by Linus Torvalds
Browse files

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: default avatarJoel Fernandes (Google) <joel@joelfernandes.org>
Suggested-by: default avatarKirill A. Shutemov <kirill@shutemov.name>
Acked-by: default avatarKirill 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 2c91bd4a

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -172,6 +172,7 @@ 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

CRA Git | Maintained and supported by SUSTech CRA and CCSE