RE: [PATCH v4 2/2] powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell.

2019-12-02 Thread Ram Pai
On Tue, Dec 03, 2019 at 11:58:18AM +1100, Alexey Kardashevskiy wrote: > > > On 02/12/2019 17:45, Ram Pai wrote: > > Commit edea902c1c1e ("powerpc/pseries/iommu: Don't use dma_iommu_ops on > >secure guests") > > disabled dma_iommu_ops path, for secure VMs. The rationale for disabling >

Re: [PATCH v4 2/2] powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell.

2019-12-02 Thread Alexey Kardashevskiy
On 02/12/2019 17:45, Ram Pai wrote: > Commit edea902c1c1e ("powerpc/pseries/iommu: Don't use dma_iommu_ops on > secure guests") > disabled dma_iommu_ops path, for secure VMs. The rationale for disabling > the dma_iommu_ops path, was to use the dma_direct path, since it had > inbuilt

[PATCH v4 2/2] powerpc/pseries/iommu: Use dma_iommu_ops for Secure VMs aswell.

2019-12-01 Thread Ram Pai
Commit edea902c1c1e ("powerpc/pseries/iommu: Don't use dma_iommu_ops on secure guests") disabled dma_iommu_ops path, for secure VMs. The rationale for disabling the dma_iommu_ops path, was to use the dma_direct path, since it had inbuilt support for bounce-buffering through SWIOTLB.