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authorLu Baolu <baolu.lu@linux.intel.com>2019-09-06 09:14:50 +0300
committerJoerg Roedel <jroedel@suse.de>2019-09-11 13:34:30 +0300
commitc5a5dc4cbbf4540c1891cdb2b70cf469405ea61f (patch)
treec8b80048b72d9094a9b92d4aa4c9de33cf60f2c2 /drivers/iommu/Kconfig
parente5e04d051979dbd636a99099b7a595093c50a4bc (diff)
downloadlinux-c5a5dc4cbbf4540c1891cdb2b70cf469405ea61f.tar.xz
iommu/vt-d: Don't switch off swiotlb if bounce page is used
The bounce page implementation depends on swiotlb. Hence, don't switch off swiotlb if the system has untrusted devices or could potentially be hot-added with any untrusted devices. Cc: Ashok Raj <ashok.raj@intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e15cdcd8cb3c..a4ddeade8ac4 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -182,6 +182,7 @@ config INTEL_IOMMU
select IOMMU_IOVA
select NEED_DMA_MAP_STATE
select DMAR_TABLE
+ select SWIOTLB
help
DMA remapping (DMAR) devices support enables independent address
translations for Direct Memory Access (DMA) from devices.