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850612c8e4
Add a __set_memory_yy() variant for all set_memory_yy() implementations. The new variant takes start and end void pointers, which allows them to be used without the usual unsigned long cast. However more important: the new variant can be used for areas larger than 8TB. The old variant comes with an "int numpages" parameter, which overflows with more than 8TB. Given that for debug_pagealloc set_memory_4k() is used on the whole kernel mapping this is not only a theoretical problem, but must be fixed. Changing all set_memory_yy() variants only on s390 to take an "unsigned long numpages" parameter is not possible, since the common module code requires an int parameter from all architectures on these functions. See module_set_memory(). Therefore change/fix this on s390 only with a new interface, and address common code later. Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.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.
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.