[PATCH 3/4] arm64: select HAVE_MOVE_PMD for faster mremap (v1)

[Joel Fernandes (Google)]

Moving page-tables at the PMD-level on arm64 is known to be safe. Enable
this option so that we can do fast mremap when possible.

Signed-off-by: Joel Fernandes (Google) <j...@joelfernandes.org>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 1b1a0e95c751..5d7c35c6f90c 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -135,6 +135,7 @@ config ARM64
        select HAVE_IRQ_TIME_ACCOUNTING
        select HAVE_MEMBLOCK
        select HAVE_MEMBLOCK_NODE_MAP if NUMA
+       select HAVE_MOVE_PMD
        select HAVE_NMI
        select HAVE_PATA_PLATFORM
        select HAVE_PERF_EVENTS
-- 
2.19.0.605.g01d371f741-goog