iommu/vt-d: Don't enable iommu's which have been ignored

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The iommu driver will ignore some iommu units if there's no
device under its scope or those devices have been explicitly
set to bypass the DMA translation. Don't enable those iommu
units, otherwise the devices under its scope won't work.

Fixes: d8190dc638 ("iommu/vt-d: Enable DMA remapping after rmrr mapped")
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Lu Baolu 2019-06-12 08:28:47 +08:00 • committed by Joerg Roedel

parent c57b260a7d

commit 6a8c6748b9

1 changed files with 7 additions and 2 deletions

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drivers/iommu/intel-iommu.c

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