From: David Woodhouse <dwmw2@infradead.org>
Date: Fri, 25 May 2012 16:42:54 +0000 (+0100)
Subject: intel-iommu: Add device info into list before doing context mapping
X-Git-Tag: v3.5-rc1~78
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e2ad23d04c1304431ab5176c89b7b476ded2d995;p=pandora-kernel.git

intel-iommu: Add device info into list before doing context mapping

Add device info into list before doing context mapping, because device
info will be used by iommu_enable_dev_iotlb(). Without it, ATS won't get
enabled as it should be.

ATS, while a dubious decision from a security point of view, can be very
important for performance.

Signed-off-by: Xudong Hao <xudong.hao@intel.com>
Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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