From c1703e85a7b20ffcefd5360e2542460737ecc15c Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Sun, 3 Jun 2012 19:42:13 +0000
Subject: [PATCH] powerpc/pseries: Disable interrupts around IOMMU percpu data
 accesses

tce_buildmulti_pSeriesLP uses a per cpu page to communicate with the
hypervisor. We currently rely on the IOMMU table spinlock but
subsequent patches will be removing that so disable interrupts
around all accesses of tce_page.

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