From: Jack Steiner <steiner@sgi.com>
Date: Wed, 16 Dec 2009 00:48:11 +0000 (-0800)
Subject: gru: fix prefetch and speculation bugs
X-Git-Tag: v2.6.33-rc1~71^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67bf04a5c2574e9495f660f418f6df776821d578;p=pandora-kernel.git

gru: fix prefetch and speculation bugs

Fix several bugs related to prefetch, ordering & speculation:

	- GRU cch_allocate() instruction causes cacheable memory
	  to be created. Add a barriers to prevent speculation
	  from prefetching data before it exists.
	- Add memory barriers before cache-flush instructions to ensure
	  that previously stored data is included in the line flushed to memory.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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