From: Mark Fortescue <mark@mtfhpc.demon.co.uk>
Date: Tue, 31 Jul 2007 09:03:11 +0000 (-0700)
Subject: [SPARC]: Fix exec failures on sun4c.
X-Git-Tag: v2.6.23-rc2~36^2~2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da4e9fea85ea42c9c6ce163a85d5164efbec31a2;p=pandora-kernel.git

[SPARC]: Fix exec failures on sun4c.

This deals with a sun4c issue caused by commit b6a2fea39318e43fee84fa7b0b90d68bed92d2ba:
mm: variable length argument support.

The new way the code works means that sun4c_update_mmu_cache gets
called before a context has been selected, which results in invalid
operation of the underling mm code.

Simply ignoring update requests when there is no valid context solves
the problem.

Signed-off-by Mark Fortescue <mark@mtfhpc.demon.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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