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6e1cce7cda
Add an inner __open_path_or_exit() API to let the caller provide additional information on ENOENT to try and help the user figure out why the test is being skipped, e.g. for files like the page_idle bitmap needed by the access tracking perf, which is dependent on a Kconfig. Immediately convert /dev/kvm to the new API, both as an example and because users might not know that some architectures/setups require loading KVM. Link: https://lore.kernel.org/r/20250516215909.2551628-3-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
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 reStructuredText 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.