From: Catalin Marinas <catalin.marinas@arm.com>
Date: Tue, 6 Oct 2009 16:57:09 +0000 (+0100)
Subject: ARM: 5746/1: Handle possible translation errors in ARMv6/v7 coherent_user_range
X-Git-Tag: v2.6.32-rc5~36^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=32cfb1b16f2b68d2296536811cadfffe26a06c1b;p=pandora-kernel.git

ARM: 5746/1: Handle possible translation errors in ARMv6/v7 coherent_user_range

This is needed because applications using the sys_cacheflush system call
can pass a memory range which isn't mapped yet even though the
corresponding vma is valid. The patch also adds unwinding annotations
for correct backtraces from the coherent_user_range() functions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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