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In order to be able to switch from LoadImage() [which treats the supplied PE/COFF image as file input only, and reconstructs the memory image based on the section descriptors] to a mode where we allocate the memory directly, and invoke the image in place, we need to now how much memory to allocate beyond the end of the image. So copy this information from the payload's PE/COFF header to the end of the compressed version of the payload, so that the decompressor app can access it before performing the decompression itself. We'll also need to size of the code region once we switch arm64 to jumping to the kernel proper with MMU and caches enabled, so let's capture that information as well. Note that SizeOfCode does not account for the header, so we need SizeOfHeaders as well. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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.