question on "powerpc/pseries/dma: Allow SWIOTLB"

Alexey Kardashevskiy aik at
Fri Jul 19 17:52:37 AEST 2019

On 19/07/2019 17:10, Christoph Hellwig wrote:
> Hey Alexey,
> what is the use case for the above commit?  Shouldn't we handle all
> addressing limits using the iommu?

Our secure VMs is the use case, when only a fraction of system memory is 
available for DMA.


More information about the Linuxppc-dev mailing list