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9d90a90855
It is dangerous to call faulthandler_disabled() when user_mode(regs) is true. The task pagefault_disabled counter is racy and it is not updated atomically on parisc. As a result, calling faulthandler_disabled() may cause erroneous termination. We now handle execption fixups and termination when user_mode(regs) is false in handle_interruption(). Thus, we can just remove the faulthandler_disabled() check from do_page_fault(). Signed-off-by: John David Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
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.