powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests

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Secure guest memory is inacessible to devices so regular DMA isn't
possible.

In that case set devices' dma_map_ops to NULL so that the generic
DMA code path will use SWIOTLB to bounce buffers for DMA.

Signed-off-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190820021326.6884-14-bauerman@linux.ibm.com

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Thiago Jung Bauermann 2019-08-19 23:13:23 -03:00 • committed by Michael Ellerman

parent 4edaac512c

commit edea902c1c

1 changed files with 10 additions and 1 deletions

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arch/powerpc/platforms/pseries/iommu.c

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