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77b5f703dc
For (bad) historical reasons, OPAL used to create a non-standard pair of properties "opal-interrupts" and "opal-interrupts-names" for representing the list of interrupts it wants Linux to request on its behalf. Among other issues, the opal-interrupts doesn't have a way to carry the type of interrupts, and they were assumed to be all level sensitive. This is wrong on some recent systems where some of them are edge sensitive causing warnings in the XIVE code and possible misbehaviours if they need to be retriggered (typically the NPU2 TCE error interrupts). This makes Linux switch to using the standard "interrupts" and "interrupt-names" properties instead when they are available, using standard of_irq helpers, which can carry all the desired type information. Newer versions of OPAL will generate those properties in addition to the legacy ones. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> [mpe: Fixup prefix logic to check strlen(r->name). Reinstate setting of start = 0 in opal_event_shutdown() to avoid double free warnings] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.