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1a1cf93c20
Though kdump kernel boots from loaded address, the first 64KB of it is copied down to real 0. So, setup a backup region and let purgatory copy the first 64KB of crashed kernel into this backup region before booting into kdump kernel. Update reserve map with backup region and crashed kernel's memory to avoid kdump kernel from accidentially using that memory. Signed-off-by: Hari Bathini <hbathini@linux.ibm.com> Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/159602294718.575379.16216507537038008623.stgit@hbathini
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.