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fcbb0a4d73
Robin points out that the fallback to guessing what domains the driver supports should only happen if the driver doesn't return a preference from its ops->def_domain_type(). Re-organize iommu_group_alloc_default_domain() so it internally uses iommu_def_domain_type only during the fallback and makes it clearer how the fallback sequence works. Make iommu_group_alloc_default_domain() return the domain so the return based logic is cleaner and to prepare for the next patch. Remove the iommu_alloc_default_domain() function as it is now trivially just calling iommu_group_alloc_default_domain(). Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/13-v5-1b99ae392328+44574-iommu_err_unwind_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.