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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@sntech.de> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/4-v8-81230027b2fa+9d-iommu_all_defdom_jgg@nvidia.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.