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powerpc: Add pgprot_writecombine
authorAnton Blanchard <anton@samba.org>
Mon, 28 Feb 2011 20:00:47 +0000 (20:00 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 2 Mar 2011 05:50:24 +0000 (16:50 +1100)
A number of drivers are using pgprot_writecombine() to enable write
combining on userspace mappings. Implement it on powerpc.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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