[PATCH 6/9] Use proper membar instructions on SPARC

[David Miller]

From: Matt Turner <mattst88 at gmail.com>
Date: Thu, 13 Aug 2009 01:45:39 -0400

> Cc: David S. Miller <davem at davemloft.net>
> Cc: Alan Coopersmith <alan.coopersmith at sun.com>
> Signed-off-by: Matt Turner <mattst88 at gmail.com>

This breaks 32-bit sparc.

It will cause the binaries built to be tagged as needing v8plus or v9
instructions.  They therefore won't execute or load on a 32-bit sparc
system.

That's why I encoded the membars using explicit instruction constants,
rather than using the usual mnemonics.