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085bdaa6eb
Add 129th region into the memblock, and this will trigger the memblock_double_array() function, this needs valid memory regions. So using dummy_physical_memory_init() to allocate a large enough memory region, and split it into a large enough memory which can be choosed by memblock_double_array(), and the left memory will be split into small memory region, and add them into the memblock. It make sure the memblock_double_array() will always choose the valid memory region that is allocated by the dummy_physical_memory_init(). So memblock_double_array() must success. Another thing should be done is to restore the memory.regions after memblock_double_array(), due to now the memory.regions is pointing to a memory region allocated by dummy_physical_memory_init(). And it will affect the subsequent tests if we don't restore the memory region. So simply record the origin region, and restore it after the test. Signed-off-by: Shaoqin Huang <shaoqin.huang@intel.com> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Link: https://lore.kernel.org/r/20221011062128.49359-2-shaoqin.huang@intel.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.