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0f02de4481At early boot stage, we have a whole PGDIR to map the kernel, so there is no need to restrict the early mapping size to 128MB. Removing this define also allows us to simplify some compile time logic. This fixes large kernel mappings with a size greater than 128MB, as it is the case for syzbot kernels whose size was just ~130MB. Note that on rv64, for now, we are then limited to PGDIR size for early mapping as we can't use PGD mappings (see [1]). That should be enough given the relative small size of syzbot kernels compared to PGDIR_SIZE which is 1GB. [1] https://lore.kernel.org/lkml/20200603153608.30056-1-alex@ghiti.fr/ Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.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.