[SPARC]: Fix exec failures on sun4c.
authorMark Fortescue <mark@mtfhpc.demon.co.uk>
Tue, 31 Jul 2007 09:03:11 +0000 (02:03 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 31 Jul 2007 09:03:11 +0000 (02:03 -0700)
commitda4e9fea85ea42c9c6ce163a85d5164efbec31a2
treeb146756eda55bbfecc49465dbf49ec320624496b
parent2fa3195d72f7d0cfb4dcb2b0dfa265ed0fa5cfa3
[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>
arch/sparc/mm/sun4c.c