tree 1d947307eead93e8b35664360c21f232e7e36ddb
parent b2f8c07bcb7d1a3575f41444d2d8048d0c922762
author Will Deacon <will.deacon@arm.com> 1404930131 +0100
committer Catalin Marinas <catalin.marinas@arm.com> 1405610316 +0100

arm64: vdso: put vdso datapage in a separate vma

The VDSO datapage doesn't need to be executable (no code there) or
CoW-able (the kernel writes the page, so a private copy is totally
useless).

This patch moves the datapage into its own VMA, identified as "[vvar]"
in /proc/<pid>/maps.

Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>