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

Message ID 20181013013200.206928-4-joel@joelfernandes.org (mailing list archive)
State New, archived
Headers show
Series Add support for fast mremap | expand

Commit Message

Joel Fernandes Oct. 13, 2018, 1:31 a.m. UTC 
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) <joel@joelfernandes.org>
---
 arch/arm64/Kconfig | 1 +
 1 file changed, 1 insertion(+)
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Patch

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