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b02e6e040a
If a context device was not attached to IOMMU, we kept the old success err value causing context devices to be unregistered but success to be returned. This would mean that things would go on but with context isolation disabled. To decide on an explicit behavior, let's return an error code here instead. If someone wants to go without IOMMU on a platform modern enough to support context isolation, they can remove the context devices from device tree. Reported-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230413082202.114721-2-cyndis@kapsi.fi
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.