Re: [PATCH v7 04/24] iommu: Add IOMMU_DOMAIN_PLATFORM for S390

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On Wed, Aug 23, 2023 at 01:47:18PM -0300, Jason Gunthorpe wrote:
> The PLATFORM domain will be set as the default domain and attached as
> normal during probe. The driver will ignore the initial attach from a NULL
> domain to the PLATFORM domain.
> After this, the PLATFORM domain's attach_dev will be called whenever we
> detach from an UNMANAGED domain (eg for VFIO). This is the same time the
> original design would have called op->detach_dev().
> This is temporary until the S390 dma-iommu.c conversion is merged.
> Tested-by: Heiko Stuebner <heiko@xxxxxxxxx>
> Tested-by: Niklas Schnelle <schnelle@xxxxxxxxxxxxx>
> Reviewed-by: Lu Baolu <>
> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx>

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