Hello Alexey,
Alexey Kardashevskiy <aik@xxxxxxxxx> writes:
> From: Ram Pai <linuxram@xxxxxxxxxx>
>
> This reverts commit edea902c1c1efb855f77e041f9daf1abe7a9768a.
>
> At the time the change allowed direct DMA ops for secure VMs; however
> since then we switched on using SWIOTLB backed with IOMMU (direct mapping)
> and to make this work, we need dma_iommu_ops which handles all cases
> including TCE mapping I/O pages in the presence of an IOMMU.
>
> Fixes: edea902c1c1e ("powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests")
> Signed-off-by: Ram Pai <linuxram@xxxxxxxxxx>
> [aik: added "revert" and "fixes:"]
> Signed-off-by: Alexey Kardashevskiy <aik@xxxxxxxxx>
Reviewed-by: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>
Tested-by: Thiago Jung Bauermann <bauerman@xxxxxxxxxxxxx>
--
Thiago Jung Bauermann
IBM Linux Technology Center
