On Thu, 19 May 2022 14:03:48 -0300
Jason Gunthorpe wrote:
> Since asserting dma ownership now causes the group to have its DMA blocked
> the iommu layer requires a working iommu. This means the dma_owner APIs
> cannot be used on the fake groups that VFIO creates. Test for this and
> avoid calling
On Thu, May 19, 2022 at 02:03:48PM -0300, Jason Gunthorpe via iommu wrote:
> Since asserting dma ownership now causes the group to have its DMA blocked
> the iommu layer requires a working iommu. This means the dma_owner APIs
> cannot be used on the fake groups that VFIO creates. Test for this and
> From: Jason Gunthorpe
> Sent: Friday, May 20, 2022 1:04 AM
>
> Since asserting dma ownership now causes the group to have its DMA
> blocked
> the iommu layer requires a working iommu. This means the dma_owner APIs
> cannot be used on the fake groups that VFIO creates. Test for this and
> avoid
Since asserting dma ownership now causes the group to have its DMA blocked
the iommu layer requires a working iommu. This means the dma_owner APIs
cannot be used on the fake groups that VFIO creates. Test for this and
avoid calling them.
Otherwise asserting dma ownership will fail for VFIO mdev de
