Hi Shunqian,
On Wed, Jun 15, 2016 at 9:04 PM, Shunqian Zheng
wrote:
> An virtual master device like DRM need to attach to iommu
> domain to share the mapping with VOPs(the one with actual
> iommu slaves).
> DRM attaches to iommu and allocates buffers before VOPs enabled,
> which means there may
An virtual master device like DRM need to attach to iommu
domain to share the mapping with VOPs(the one with actual
iommu slaves).
DRM attaches to iommu and allocates buffers before VOPs enabled,
which means there may have not real iommu devices can be used
to do dma mapping.
This patch creates a
