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3134cc8beb
When a mapped level interrupt (a timer, for example) is deactivated
by the guest, the corresponding host interrupt is equally deactivated.
However, the fate of the pending state still needs to be dealt
with in SW.
This is specially true when the interrupt was in the active+pending
state in the virtual distributor at the point where the guest
was entered. On exit, the pending state is potentially stale
(the guest may have put the interrupt in a non-pending state).
If we don't do anything, the interrupt will be spuriously injected
in the guest. Although this shouldn't have any ill effect (spurious
interrupts are always possible), we can improve the emulation by
detecting the deactivation-while-pending case and resample the
interrupt.
While we're at it, move the logic into a common helper that can
be shared between the two GIC implementations.
Fixes:
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.