[RFC v2 2/7] arm: Use generic VDSO unmap and remap

From: Christopher Covington
Date: Tue Nov 01 2016 - 13:11:18 EST

Checkpoint/Restore In Userspace (CRIU) needs to be able to unmap and remap
the VDSO to successfully checkpoint and restore applications in the face of
changing VDSO addresses due to Address Space Layout Randomization (ASLR,
randmaps). Previously, this was implemented in architecture-specific code
for PowerPC and x86. However, a generic version based on Laurent Dufour's
PowerPC implementation is now available, so begin using it on ARM.

Signed-off-by: Christopher Covington <cov@xxxxxxxxxxxxxx>
arch/arm/mm/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index c1799dd..1d3312b 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -845,6 +845,7 @@ config VDSO
depends on AEABI && MMU && CPU_V7
default y if ARM_ARCH_TIMER
Place in the process address space an ELF shared object
providing fast implementations of gettimeofday and
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