On 2023/8/3 8:07, 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> Signed-off-by: Jason Gunthorpe<jgg@xxxxxxxxxx> --- drivers/iommu/s390-iommu.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-)
Reviewed-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Best regards, baolu
