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Reserve one page in each vm for kernel space to use for things such as workarounds. v2: use real memory, do not decrease vm.total v4: reserve only one page and explain flag v5: remove allocated object on ppgtt cleanup v6: decrease vm->total by reservation size Suggested-by: Chris Wilson <chris.p.wilson@linux.intel.com> Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Reviewed-by: Nirmoy Das <nirmoy.das@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231026-wabb-v6-1-4aa7d55d0a8a@intel.com
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.