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0c362f96e1
After more experience with the cases where no one the si_code of 0 is used both as a signal specific si_code, and as SI_USER it appears that no one cares about the signal specific si_code case and the good solution is to just fix the architectures by using a different si_code. In none of the conversations has anyone even suggested that anything depends on the signal specific redefinition of SI_USER. There are at least test cases that care when si_code as 0 does not work as si_user. So make things simple and keep the generic code from introducing problems by removing the special casing of TRAP_FIXME and FPE_FIXME. This will ensure the generic case of sending a signal with kill will always set SI_USER and work. The architecture specific, and signal specific overloads that set si_code to 0 will now have problems with signalfd and the 32bit compat versions of siginfo copying. At least until they are fixed. Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> |
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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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.