From: Jiang Liu <jiang.liu@linux.intel.com>
Date: Wed, 19 Feb 2014 06:07:34 +0000 (+0800)
Subject: iommu/vt-d: Use RCU to protect global resources in interrupt context
X-Git-Tag: v3.15-rc1~70^2^6~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0e242612d9cdb46e878ed1f126c78fe68492af00;p=pandora-kernel.git

iommu/vt-d: Use RCU to protect global resources in interrupt context

Global DMA and interrupt remapping resources may be accessed in
interrupt context, so use RCU instead of rwsem to protect them
in such cases.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Joerg Roedel <joro@8bytes.org>
---

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