From: David S. Miller <davem@sunset.davemloft.net>
Date: Thu, 29 Sep 2005 04:06:47 +0000 (-0700)
Subject: [SPARC64]: Simplify user fault fixup handling.
X-Git-Tag: v2.6.14-rc3~33^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efdc1e2083e04cc70721d55803889b346c1a3de2;p=pandora-kernel.git

[SPARC64]: Simplify user fault fixup handling.

Instead of doing byte-at-a-time user accesses to figure
out where the fault occurred, read the saved fault_address
from the current thread structure.

For the sake of defensive programming, if the fault_address
does not fall into the user buffer range, simply assume the
whole area faulted.  This will cause the fixup for
copy_from_user() to clear the entire kernel side buffer.

Signed-off-by: David S. Miller <davem@davemloft.net>
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