[PATCH v5 02/25] iommu: Add IOMMU_DOMAIN_PLATFORM

[Baolu Lu]

On 2023/7/25 1:21, Jason Gunthorpe wrote:
> This is used when the iommu driver is taking control of the dma_ops,
> currently only on S390 and power spapr. It is designed to preserve the
> original ops->detach_dev() semantic that these S390 was built around.
> 
> Provide an opaque domain type and a 'default_domain' ops value that allows
> the driver to trivially force any single domain as the default domain.
> 
> Signed-off-by: Jason Gunthorpe<jgg at nvidia.com>
> ---
>   drivers/iommu/iommu.c | 14 +++++++++++++-
>   include/linux/iommu.h |  6 ++++++
>   2 files changed, 19 insertions(+), 1 deletion(-)

Reviewed-by: Lu Baolu <baolu.lu at linux.intel.com>