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2e730cb56b
The ioapic interrupt type table is wrong as it assumes that polarity in IO/APIC context means active high when set. But the IO/APIC polarity is working the other way round. This works because the ordering of the entries is consistent with the device tree and the type information is not used by the IO/APIC interrupt chip. The whole trigger and polarity business of IO/APIC is misleading and the corresponding constants which are defined as 0/1 are not used consistently and are going to be removed. Rename the type table members to 'is_level' and 'active_low' and adjust the type information for consistency sake. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20201024213535.443185-5-dwmw2@infradead.org |
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| certs | ||
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| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
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| mm | ||
| net | ||
| samples | ||
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| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| README | ||
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.