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Kexec can directly boot into a new kernel without going to complete reboot. This can leave the previous kernel's configuration for PDC interrupts as is. Clear previous kernel's configuration during init by setting interrupts in enable bank to zero. The IRQs specified in qcom,pdc-ranges property are the only ones that can be used by the new kernel so clear only those IRQs. The remaining ones may be in use by a different kernel and should not be set by new kernel. Suggested-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Maulik Shah <mkshah@codeaurora.org> Signed-off-by: Marc Zyngier <maz@kernel.org> Tested-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Reviewed-by: Douglas Anderson <dianders@chromium.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/1601267524-20199-7-git-send-email-mkshah@codeaurora.org |
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| arch | ||
| 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.