Commit 8939ddf6 authored Jun 12, 2015 by Joerg Roedel

iommu/vt-d: Enable Translation only if it was previously disabled



Do not touch the TE bit unless we know translation is
disabled.

Tested-by: ZhenHua Li <zhen-hual@hp.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent 60b523ec

drivers/iommu/intel-iommu.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -3204,7 +3204,9 @@ static int __init init_dmars(void)
		if (ret)
		goto free_iommu;

		if (!translation_pre_enabled(iommu))
		iommu_enable_translation(iommu);

		iommu_disable_protect_mem_regions(iommu);
		}