[PATCH 0/3] Disable IOMMU Passthrough when SME is active

[Joerg Roedel]

Hi,

here is a small patch-set to disable IOMMU Passthrough mode when SME is
active even when CONFIG_IOMMU_DEFAULT_PASSTHROUGH=y is set.

The reason for that change is that SME with passthrough mode turned out
to be fragile with devices requiring SWIOTLB, mainly because SWIOTLB has
a maximum allocation size of 256kb and a limit overall size of the
bounce buffer.

Therefore having IOMMU in translation mode by default is better when SME
is active on a system.

Please review.

Thanks,

	Joerg

Joerg Roedel (3):
  iommu: Print default domain type on boot
  iommu: Set default domain type at runtime
  iommu: Disable passthrough mode when SME is active

 drivers/iommu/iommu.c | 48 +++++++++++++++++++++++++++++++++++++------
 1 file changed, 42 insertions(+), 6 deletions(-)

-- 
2.17.1