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a28655c330
The efi-pstore module parameter "pstore_disable" warrants that users are able to deactivate such backend. There is also a Kconfig option for the default value of this parameter. It was originally added due to some bad UEFI FW implementations that could break with many variables written. Some distros (such as Arch Linux) set this in their config file still nowadays. And once it is set, even being a writable module parameter, there is effectively no way to make use of efi-pstore anymore. If "pstore_disable" is set to true, the init function of the module exits early and is never called again after the initcall processing. Let's switch this module parameter to have a callback and perform the pstore backend registration again each time it's set from Y->N (and vice-versa). With this, the writable nature of the parameter starts to make sense, given that users now can switch back to using efi-pstore or not during runtime by writing into it. Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com> Link: https://lore.kernel.org/r/20240103184053.226203-1-gpiccoli@igalia.com Signed-off-by: Kees Cook <keescook@chromium.org> |
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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.