[PATCH v7 03/24] powerpc/iommu: Setup a default domain and remove set_platform_dma_ops

[Jerry Snitselaar]

On Wed, Aug 23, 2023 at 01:47:17PM -0300, Jason Gunthorpe wrote:
> POWER is using the set_platform_dma_ops() callback to hook up its private
> dma_ops, but this is buired under some indirection and is weirdly
> happening for a BLOCKED domain as well.
> 
> For better documentation create a PLATFORM domain to manage the dma_ops,
> since that is what it is for, and make the BLOCKED domain an alias for
> it. BLOCKED is required for VFIO.
> 
> Also removes the leaky allocation of the BLOCKED domain by using a global
> static.
> 
> Reviewed-by: Lu Baolu <baolu.lu at linux.intel.com>
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
> ---
>  arch/powerpc/kernel/iommu.c | 38 +++++++++++++++++--------------------
>  1 file changed, 17 insertions(+), 21 deletions(-)
> 

Reviewed-by: Jerry Snitselaar <jsnitsel at redhat.com>