From: Bernd Schmidt <bernds_cb1@t-online.de>
Date: Wed, 23 Apr 2008 19:06:15 +0000 (+0800)
Subject: [Blackfin] arch: This allows XIP to work with FD-PIC.
X-Git-Tag: v2.6.26-rc1~1085^2~47
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d5adb029efad3c51db376d620319abe65d1efc21;p=pandora-kernel.git

[Blackfin] arch: This allows XIP to work with FD-PIC.

Previously, init failed to do anything meaningful;
it turns out that the reason is that FD-PIC has a readonly data
section which can be located in the XIP filesystem, and various address checks
in the kernel reject such addresses for syscall arguments.  Hence, init's
  execve ("/bin/sh", ...)
failed with error code EFAULT.

There's room for improvement here: in case people want to have filesystems
on flash rather than in main memory, _access_ok should be modified to
allow this.

This bug fix is also dedicated to Michael Hennerich.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
---

Reading git-diff-tree failed