From: Will Deacon <will.deacon@arm.com>
Date: Wed, 9 Jul 2014 18:22:11 +0000 (+0100)
Subject: arm64: vdso: put vdso datapage in a separate vma
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~183^2~39
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8715493852783358ef8656a0054a14bf822509cf;p=pandora-kernel.git

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>
---

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